{"id":2865,"date":"2026-07-20T15:09:52","date_gmt":"2026-07-20T13:09:52","guid":{"rendered":"https:\/\/gekkophotonics.com\/coating-composite-resins\/proof\/"},"modified":"2026-07-20T15:09:52","modified_gmt":"2026-07-20T13:09:52","slug":"proof","status":"publish","type":"page","link":"https:\/\/gekkophotonics.com\/en\/coating-composite-resins\/proof-inline-raman-feasibility-coating-composite-resins\/","title":{"rendered":"Proof &#8211; Inline Raman Feasibility for Coating &#038; Composite Resins | Gekko Photonics"},"content":{"rendered":"<style>.elementor-2865 .elementor-element.elementor-element-b2e9383{margin-top:0px;margin-bottom:0px;padding:0px 0px 0px 0px;}.elementor-2865 .elementor-element.elementor-element-6ee3224 > .elementor-element-populated{padding:0px 0px 0px 0px;}@media(min-width:768px){.elementor-2865 .elementor-element.elementor-element-6ee3224{width:100%;}}<\/style>\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2865\" class=\"elementor elementor-2865 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data-widget_type=\"html.default\">\n\t\t\t\t\t<style>.gk-ms-host,.gk-ms-host>.elementor-container,.gk-ms-col,.gk-ms-col>.elementor-widget-wrap,.gk-ms-col .elementor-widget-html,.gk-ms-col .elementor-widget-html>.elementor-widget-container{margin:0!important;padding:0!important;max-width:none!important;width:100%!important}<\/style>\n<style>\n\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap');\n\n#gkms{\n  \/* --- brand tokens (from colors_and_type.css) --- *\/\n  --gk-blue:#019FE2; --gk-blue-600:#0088C2; --gk-blue-400:#3DB6E8; --gk-blue-100:#D6EFFA; --gk-blue-50:#EDF8FD;\n  --gk-navy-deep:#2B2E83; --gk-navy-dark:#192A3D; --gk-navy-800:#1F2A4A; --gk-slate:#3A4F66;\n  --gk-gold:#F3C969; --gk-white:#FFFFFF; --gk-off:#FAFBFC;\n  --g50:#F5F6F8; --g100:#E8EBEF; --g200:#D3D8DF; --g300:#B5BCC5; --g400:#8A93A0; --g500:#5E6676; --g600:#3F485A; --g700:#2A3342; --black:#0D0D0D;\n  --ok:#2BB673; --warn:#F3C969; --bad:#E04B4B;\n  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auto;padding:0 24px}\n#gkms .hero .display{color:#fff;max-width:17ch}\n#gkms .hero .display .accent{color:var(--gk-blue-400)}\n#gkms .hero .lead{color:#C8D0DC;max-width:56ch;margin-top:22px}\n#gkms .hero .eyebrow{color:var(--gk-blue-400)}\n#gkms .hero .eyebrow::before{background:var(--gk-blue-400)}\n#gkms .badges{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 32px}\n#gkms .badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:8px 15px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);color:#DCE4EF}\n#gkms .badge b{color:#fff;font-weight:800}\n#gkms .hero-cta{display:flex;flex-wrap:wrap;gap:12px}\n#gkms .scrollcue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);color:rgba(255,255,255,.5);font-size:22px;animation:bob 1.8s var(--ease) infinite}\n@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}\n\n\/* ---- generic reveal ---- *\/\n#gkms .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}\n#gkms .reveal.in{opacity:1;transform:none}\n\n\/* ---- context strip (spec-sheet band) ---- *\/\n#gkms .ctx{background:var(--gk-off)}\n#gkms .ctx-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}\n#gkms .ctx-item{padding:2px 30px}\n#gkms .ctx-item + .ctx-item{border-left:1px solid var(--g200)}\n@media(max-width:820px){#gkms .ctx-grid{grid-template-columns:repeat(2,1fr);gap:34px 0}\n  #gkms .ctx-item{padding:2px 26px}\n  #gkms .ctx-item:nth-child(odd){padding-left:0;border-left:none}\n  #gkms .ctx-item:nth-child(3),#gkms .ctx-item:nth-child(4){padding-top:0}}\n@media(max-width:520px){#gkms .ctx-grid{grid-template-columns:1fr;gap:28px 0}\n  #gkms .ctx-item{padding:0;border-left:none}}\n#gkms .ctx-item:first-child{padding-left:0}\n#gkms .ctx-item .k{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue);margin-bottom:12px}\n#gkms 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img{width:100%;height:100%;object-fit:cover}\n\n\/* ---- analyte + spectrum explorer ---- *\/\n#gkms .explorer{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:stretch}\n@media(max-width:900px){#gkms .explorer{grid-template-columns:1fr}}\n#gkms .analyte-list{display:flex;flex-direction:column;gap:10px}\n#gkms .analyte{display:flex;justify-content:space-between;align-items:center;gap:14px;text-align:left;font-family:var(--font);\n  background:#fff;border:1px solid var(--g200);border-radius:var(--r-md);padding:16px 18px;cursor:pointer;transition:.18s var(--ease)}\n#gkms .analyte:hover{border-color:var(--gk-blue-400);transform:translateX(3px)}\n#gkms .analyte.active{border-color:var(--gk-blue);background:var(--gk-blue-50);box-shadow:var(--sh-sm)}\n#gkms .analyte .n{font-weight:700;color:var(--gk-navy-deep);font-size:15px}\n#gkms .analyte .band{font-size:12px;font-weight:700;color:var(--gk-blue);font-variant-numeric:tabular-nums;background:var(--gk-blue-100);padding:3px 9px;border-radius:var(--r-pill);white-space:nowrap}\n#gkms .spectrum-panel{background:var(--gk-navy-dark);border-radius:var(--r-xl);padding:28px;color:#fff;display:flex;flex-direction:column;box-shadow:var(--sh-lg)}\n#gkms .spectrum-panel .sp-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}\n#gkms .spectrum-panel .sp-live{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue-400);display:flex;align-items:center;gap:7px}\n#gkms .spectrum-panel .sp-live .dot{width:8px;height:8px;border-radius:999px;background:var(--gk-blue-400);animation:pulse 1.4s infinite}\n@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}\n#gkms .spectrum-panel .sp-read{font-variant-numeric:tabular-nums;font-size:13px;color:#93A1B5}\n#gkms .spec-svg{width:100%;height:200px;margin:10px 0 6px}\n#gkms .spec-svg .grid line{stroke:rgba(255,255,255,.06);stroke-width:1}\n#gkms .spec-svg 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.vbar{height:10px;border-radius:999px;background:rgba(0,0,0,.08);margin:22px 0 16px;overflow:hidden}\n#gkms .vcard.new .vbar{background:rgba(255,255,255,.12)}\n#gkms .vbar span{display:block;height:100%;border-radius:999px;width:0;transition:width 1.2s var(--ease)}\n#gkms .vcard.old .vbar span{background:var(--bad)}\n#gkms .vcard.new .vbar span{background:var(--gk-blue)}\n#gkms .vcard p{font-size:14px;line-height:1.55}\n#gkms .vcard.old p{color:var(--gk-slate)}\n#gkms .vcard.new p{color:#C8D0DC}\n\n\/* ---- how \/ probe cycle ---- *\/\n#gkms .how-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}\n@media(max-width:900px){#gkms .how-grid{grid-template-columns:1fr}}\n#gkms .cycle{background:var(--gk-navy-dark);border-radius:var(--r-xl);padding:34px;color:#fff;box-shadow:var(--sh-lg)}\n#gkms .cycle .ring{display:flex;justify-content:center;gap:0;margin-bottom:24px}\n#gkms .cyc-step{flex:1;text-align:center;position:relative;padding:0 6px}\n#gkms .cyc-step 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auto;width:46px;height:46px;border-radius:12px;background:var(--gk-blue-50);color:var(--gk-blue);display:flex;align-items:center;justify-content:center;font-size:22px}\n#gkms .how-point h4{font-size:18px;color:var(--gk-navy-deep);margin-bottom:5px}\n#gkms .how-point p{font-size:15px;color:var(--gk-slate);line-height:1.55}\n\n\/* ---- metric band ---- *\/\n#gkms .band{background:linear-gradient(120deg,#141F30 0%,var(--gk-navy-dark) 55%,#1B3048 100%);color:#fff;position:relative;overflow:hidden}\n#gkms .band::before{content:\"\";position:absolute;inset:0;pointer-events:none;\n  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);\n  background-size:56px 56px;mask-image:radial-gradient(70rem 40rem at 30% 0%,#000 0%,transparent 70%)}\n#gkms .band .wrap{position:relative}\n#gkms .band .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}\n@media(max-width:820px){#gkms .band 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.25s var(--ease);display:flex;flex-direction:column}\n#gkms .proof:hover{box-shadow:var(--sh-lg);transform:translateY(-4px);border-color:var(--gk-blue-100)}\n#gkms .proof .pph{aspect-ratio:16\/10;background:var(--g100);overflow:hidden;position:relative}\n#gkms .proof .pph img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}\n#gkms .proof:hover .pph img{transform:scale(1.045)}\n#gkms .proof .pph .ptag{position:absolute;left:14px;top:14px;font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:rgba(15,22,38,.72);backdrop-filter:blur(6px);padding:6px 11px;border-radius:var(--r-pill)}\n#gkms .proof .pbody{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}\n#gkms .proof h4{color:var(--gk-navy-deep);font-size:18px;line-height:1.25;margin:0 0 12px}\n#gkms .proof p{font-size:14px;color:var(--gk-slate);line-height:1.62}\n#gkms .proof p b{color:var(--gk-navy-deep);font-variant-numeric:tabular-nums}\n\n\/* 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h4{font-size:17px;color:#fff;margin-bottom:6px}\n#gkms .reg p{font-size:14px;color:#C8D0DC;line-height:1.55}\n\n\/* ---- replace ---- *\/\n#gkms .repl{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}\n@media(max-width:720px){#gkms .repl{grid-template-columns:1fr}}\n#gkms .repl .item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--g100);border-radius:var(--r-md);padding:18px 20px}\n#gkms .repl .lag{flex:0 0 auto;font-size:12px;font-weight:800;color:var(--bad);background:#FDE9E9;padding:5px 10px;border-radius:6px;white-space:nowrap}\n#gkms .repl .m{font-weight:700;color:var(--gk-navy-deep);font-size:15px}\n#gkms .repl .s{font-size:13px;color:var(--gk-slate);margin-top:3px}\n\n\/* ---- product ---- *\/\n#gkms .product{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center}\n@media(max-width:900px){#gkms .product{grid-template-columns:1fr}}\n#gkms .prod-photo{background:radial-gradient(60% 55% at 50% 42%,#101321 0%,#010105 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.st-l{display:flex;align-items:center;gap:16px}\n#gkms .strip .st-ic{width:48px;height:48px;border-radius:12px;background:var(--gk-blue-50);color:var(--gk-blue);display:flex;align-items:center;justify-content:center;font-size:24px;flex:0 0 auto}\n#gkms .strip h4{font-size:18px;color:var(--gk-navy-deep)}\n#gkms .strip p{font-size:14px;color:var(--gk-slate);margin-top:2px}\n\n\/* ---- footer ---- *\/\n#gkms .foot{background:var(--black);color:#C8D0DC;padding:72px 0 30px}\n#gkms .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}\n@media(max-width:820px){#gkms .foot-grid{grid-template-columns:1fr 1fr}}\n#gkms .foot .flogo{height:42px;width:auto;filter:brightness(0) invert(1);margin-bottom:18px}\n#gkms .foot .ftag{font-size:14px;color:#8A93A0;line-height:1.6;max-width:34ch}\n#gkms .foot h5{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue);margin-bottom:16px}\n#gkms .foot a{display:block;font-size:13px;color:#C8D0DC;line-height:2}\n#gkms .foot a:hover{color:var(--gk-blue-400)}\n#gkms .foot .addr{font-size:13px;color:#8A93A0;line-height:1.7;margin-top:4px}\n#gkms .foot .fbottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#5E6676}\n#gkms .foot .fbottom .tagpl{color:var(--gk-blue);font-weight:700;letter-spacing:.14em;text-transform:uppercase}\n#gkms .mono-note{font-size:12px;color:var(--g400)}\n\n\/* ---- feasibility request form (custom, posts to gekko\/v1\/rsvp) ---- *\/\n#gkms .gkms-form{max-width:560px;margin:28px auto 0;text-align:left;position:relative}\n#gkms .gkms-form-q{font-weight:700;font-size:14px;color:#fff;margin:0 0 12px;text-align:center}\n#gkms .gkms-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}\n#gkms 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auto;box-shadow:0 6px 18px rgba(13,13,13,.18)}\n#gkms .gkms-hp{position:absolute!important;left:-9999px!important;top:auto;width:1px;height:1px;overflow:hidden;opacity:0}\n#gkms .gkms-consent{display:flex;align-items:flex-start;gap:10px;margin:14px 0 0;font-size:12.5px;color:rgba(255,255,255,.9);line-height:1.5;cursor:pointer;text-align:left}\n#gkms .gkms-consent-cb{flex:none;width:18px;height:18px;margin-top:1px;accent-color:#fff;cursor:pointer}\n#gkms .gkms-consent a{color:#fff;text-decoration:underline}\n#gkms .gkms-req{color:var(--gk-gold)}\n#gkms .gkms-msg{margin:12px 0 0;font-size:14px;min-height:1px;text-align:center;color:#fff}\n#gkms .gkms-msg.err{color:#FFDADA}\n#gkms .gkms-done{max-width:560px;margin:28px auto 0;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.30);border-radius:var(--r-lg);padding:24px;text-align:center;color:#fff;font-size:16px;font-weight:600;line-height:1.5}\n#gkms .cta-alt{margin-top:20px;position:relative}\n#gkms .cta-alt a{color:#fff;font-weight:600;font-size:14px;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px}\n#gkms .cta-alt a:hover{border-color:#fff}\n@media(max-width:560px){#gkms .gkms-choices{grid-template-columns:1fr}}\n\n\/* ---- inline line icons (replacing emoji) ---- *\/\n#gkms .ci svg{width:28px;height:28px;display:block;color:#DCE4EF}\n#gkms .cyc-step.on .ci svg{color:#fff}\n#gkms .how-point .hi svg{width:24px;height:24px;display:block}\n#gkms .strip .st-ic svg{width:26px;height:26px;display:block}\n#gkms .gkms-hint{margin:0 0 16px;font-size:13px;color:rgba(255,255,255,.88);line-height:1.55;text-align:center}\n#gkms .gkms-submit{transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}\n#gkms .gkms-submit.is-check{background:var(--ok);border-color:var(--ok);color:#fff;pointer-events:none}\n#gkms .gkms-submit svg{width:18px;height:18px;flex:0 0 auto;margin-right:2px}\n\n\n\/* ---- multi-page additions ---- *\/\n#gkms .subhero{position:relative;overflow:hidden;color:#fff;padding:120px 0 72px;\n  background:linear-gradient(115deg,#0F1626 0%,#192A3D 55%,#1F2A4A 100%)}\n#gkms .subhero .spectrum{position:absolute;inset:0;width:100%;height:100%;opacity:.20;pointer-events:none}\n#gkms .subhero .display{color:#fff;max-width:22ch;font-size:clamp(34px,4.4vw,54px)}\n#gkms .subhero .display .accent{color:var(--gk-blue-400)}\n#gkms .subhero .lead{color:#C8D0DC;max-width:62ch;margin-top:18px}\n#gkms .subhero .eyebrow{color:var(--gk-blue-400)}\n#gkms .subhero .eyebrow::before{background:var(--gk-blue-400)}\n#gkms .crumb{font-size:13px;color:#8A93A0;margin-bottom:18px}\n#gkms .crumb a{color:#C8D0DC}\n#gkms .crumb a:hover{color:#fff}\n#gkms .teaser-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}\n#gkms a.teaser{display:flex;flex-direction:column;background:#fff;border:1px solid var(--g100);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);transition:.2s var(--ease);color:inherit}\n#gkms a.teaser:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--gk-blue-100)}\n#gkms .teaser .tph{height:230px;overflow:hidden}\n#gkms .teaser .tph img{width:100%;height:100%;object-fit:cover}\n#gkms .teaser .tbody{padding:20px 22px 22px}\n#gkms .teaser .tk{font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue);margin-bottom:8px}\n#gkms .teaser h3{font-size:18px;color:var(--gk-navy-deep);margin-bottom:6px}\n#gkms .teaser p{font-size:14px;color:var(--gk-slate);line-height:1.55}\n#gkms .teaser .tgo{margin-top:auto;padding-top:14px;font-size:13.5px;font-weight:700;color:var(--gk-blue)}\n@media(max-width:940px){#gkms .teaser-grid{grid-template-columns:1fr}}\n#gkms .pager{display:flex;justify-content:space-between;gap:14px;max-width:1200px;margin:0 auto;padding:34px 24px}\n#gkms .pager a{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--gk-navy-deep)}\n#gkms .pager a:hover{color:var(--gk-blue)}\n\/* ---- packshot rule: no frame, no background, full device visible ---- *\/\n#gkms .prod-photo{background:none;border:none;box-shadow:none;padding:0;border-radius:0;overflow:visible}\n#gkms .prod-photo::after{display:none}\n#gkms .prod-photo img{max-height:560px;max-width:100%;width:auto;object-fit:contain}\n#gkms .packshot-stage{background:none;border:0;box-shadow:none;padding:0;text-align:center}\n#gkms .packshot-stage img{max-width:100%;height:auto;max-height:520px;object-fit:contain;filter:drop-shadow(0 24px 42px rgba(25,42,61,.28))}\n#gkms .tabpanel.active:not(:has(img)){grid-template-columns:1fr!important;max-width:840px}\n#gkms .product:not(:has(img)){grid-template-columns:1fr!important;max-width:840px}\n#gkms .how-grid:not(:has(img)):not(:has(.cycle)){grid-template-columns:1fr!important;max-width:840px}\n\/* ---- click-to-load YouTube facade ---- *\/\n#gkms .vid-embed{position:relative;width:100%;aspect-ratio:16\/9;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);background:#0F1626}\n#gkms .vid-embed .yt-facade{display:block;width:100%;height:100%;margin:0;padding:0;border:0;cursor:pointer;background:#0F1626;position:relative}\n#gkms .vid-embed .yt-facade img{width:100%;height:100%;object-fit:cover;display:block}\n#gkms .vid-embed .yt-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}\n#gkms .vid-embed .yt-play svg{width:74px;height:auto;filter:drop-shadow(0 6px 16px rgba(0,0,0,.45));transition:transform .18s var(--ease)}\n#gkms .vid-embed .yt-facade:hover .yt-play svg,#gkms .vid-embed .yt-facade:focus-visible .yt-play svg{transform:scale(1.09)}\n#gkms .vid-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}\n\n<\/style>\n\n<div id=\"gkms\">\n<div id=\"gkms-progress\" style=\"position:fixed;top:0;left:0;height:3px;background:var(--gk-blue);width:0;z-index:200\"><\/div>\n<nav class=\"nav\">\n    <div class=\"nav-in\">\n      <a href=\"\/coating-composite-resins\/\"><img decoding=\"async\" class=\"logo\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/logo-full-3.png\" alt=\"Gekko Photonics\"><\/a>\n      <div class=\"nav-links\">\n      <a href=\"\/coating-composite-resins\/\">Home<\/a>\n      <a href=\"\/coating-composite-resins\/chemistry\/\">Chemistry<\/a>\n      <a href=\"\/coating-composite-resins\/what-we-measure\/\">What we measure<\/a>\n      <a href=\"\/coating-composite-resins\/how-it-works\/\">How it works<\/a>\n      <a href=\"\/coating-composite-resins\/proof\/\" class=\"active\">Proof<\/a>\n      <a href=\"\/coating-composite-resins\/compliance\/\">Compliance<\/a>\n      <a href=\"\/coating-composite-resins\/instrument\/\">Instrument<\/a>\n      <\/div>\n      <a class=\"btn btn-primary\" href=\"#contact\">Test on your samples<\/a>\n    <\/div>\n  <\/nav>\n<header class=\"subhero\">\n  <svg class=\"spectrum\" viewBox=\"0 0 1200 420\" preserveAspectRatio=\"none\" aria-hidden=\"true\">\n    <path d=\"M0,320 L90,312 L150,290 L195,195 L240,305 L315,292 L375,185 L420,305 L480,262 L540,135 L600,290 L660,276 L720,225 L780,296 L840,282 L900,205 L960,300 L1020,288 L1080,240 L1140,292 L1200,270\" fill=\"none\" stroke=\"#019FE2\" stroke-width=\"2\"><\/path>\n    <path d=\"M0,335 L90,328 L150,318 L195,245 L240,325 L315,312 L375,232 L420,322 L480,292 L540,196 L600,312 L660,300 L720,258 L780,318 L840,305 L900,242 L960,320 L1020,308 L1080,272 L1140,314 L1200,295\" fill=\"none\" stroke=\"#fff\" stroke-width=\"1\" stroke-dasharray=\"4 6\"><\/path>\n  <\/svg>\n  <div class=\"hero-in\" style=\"position:relative\">\n    <div class=\"crumb\"><a href=\"\/coating-composite-resins\/\">Coating &amp; composite resins<\/a> \/ Proof<\/div>\n    <span class=\"eyebrow\">Proof<\/span>\n    <h1 class=\"display\" style=\"margin-top:16px\">Real feasibility numbers, <span class=\"accent\">on real alkyd resin.<\/span><\/h1>\n    <p class=\"lead\">The acid value and viscosity endpoint of an alkyd resin, read inline - in the reactor itself, no sampling and no 30-to-60-minute wait on an ISO 3682 titration. In a feasibility study at a resin producer, a CNN chemometric model on the full Raman spectrum tracked acid value at R 0.982 to 0.998 and viscosity at R 0.988 to 0.998 against the lab reference.<\/p>\n  <\/div>\n<\/header>\n\n<!-- ===== 01 \u00b7 WHAT A FEASIBILITY STUDY IS ===== -->\n<section id=\"fs-what\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">01<\/span>\n      <span class=\"eyebrow\">Feasibility first<\/span>\n      <h2 class=\"h2\">A validated measurement on your resin - before any hardware.<\/h2>\n      <p class=\"lead\">A Gekko feasibility study answers one question with numbers: can inline Raman read your reaction endpoint - acid value, viscosity, monomer conversion - in your chemistry, at the accuracy you need. Inline means the measurement happens in the reactor itself, through an immersion probe, with no sampling and no 30-to-60-minute wait on the lab. Real samples, a CNN chemometric model built on your matrix, and a report with the accuracy figures on the table.<\/p>\n      <p class=\"lead\" style=\"margin-top:12px\">The study runs on the Spectrally X1 with the same measurement and model stack that later runs on the Spectrally X1 INLINE at your line - at-line on samples first, then with the immersion probe under near-process conditions. What the report shows is what the analyzer reads in production.<\/p>\n    <\/div>\n\n    <div class=\"tabpanels reveal\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">The method<\/span>\n          <h3>Your samples, measured against your reference method<\/h3>\n          <p>An alkyd or acrylic reactor is not a generic matrix. The study correlates the Raman spectrum of your resin with the method you run today - ISO 3682 acid-value titration, offline viscometry, GC for residual monomer - and reports the agreement, the working bands and the validity range on your own chemistry.<\/p>\n          <ul>\n            <li>Measured on a Spectrally X1 Raman spectrometer - 785 nm or 1064 nm laser for drying-oil fluorescence, 8 cm&#8315;&sup1; resolution, 300-3500 cm&#8315;&sup1; range<\/li>\n            <li>At-line in vials, in-line with an immersion probe, or on-site at the reactor with a mobile unit<\/li>\n            <li>Model metrics reported against your reference values, with the validity range stated<\/li>\n          <\/ul>\n        <\/div>\n        <div class=\"tp-photo reveal\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/gen-resin-sampling.jpg\" alt=\"Sampling valve and flange on a stainless alkyd resin reactor line\"><\/div><\/div>\n    <\/div>\n\n    <div class=\"ctx-grid\" style=\"margin-top:56px\">\n      <div class=\"ctx-item reveal\"><div class=\"k\">Input<\/div><div class=\"v\">Samples or R&amp;D data<\/div><p>Representative process samples - reactor pulls, cans, resin solutions in solvent - or existing spectra and reference datasets on your alkyd, acrylic or composite resin.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Method<\/div><div class=\"v\">Raman + chemometrics<\/div><p>Full-spectrum models - acid\/ester carbonyl band ratio, regression, CNN core - correlated against your reference method on your own matrix.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Output<\/div><div class=\"v\">Validated model + report<\/div><p>Spectra, band assignments, model metrics versus your reference values, and the validated model on your resin chemistry.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Commitment<\/div><div class=\"v\">Numbers before hardware<\/div><p>The study delivers the accuracy figures before any instrument decision, so the pilot rests on quantified fact.<\/p><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 02 \u00b7 HEADLINE RESULTS ===== -->\n<section id=\"fs-results\" class=\"band\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">02<\/span>\n      <span class=\"eyebrow no-line\" style=\"color:var(--gk-blue-400)\">Headline results<\/span>\n      <h2 class=\"h2\" style=\"color:#fff;margin-top:12px\">Numbers first. The study follows below.<\/h2>\n      <p class=\"lead\" style=\"color:#C8D0DC\">From an alkyd acid-value and viscosity feasibility at a resin producer, measured with the Spectrally X1 and an immersion probe inline, validated against ISO 3682 titration and offline viscometry.<\/p>\n    <\/div>\n    <div class=\"metrics\" id=\"gkms-metrics\">\n      <div class=\"metric\"><div class=\"mk\">Acid value &middot; model vs lab<\/div><div class=\"mv\" data-to=\"0.998\" data-dec=\"3\" data-prefix=\"R&nbsp;\">R&nbsp;0<\/div><p>CNN model on the full Raman spectrum versus ISO 3682 titration, R 0.982 to 0.998 across the feasibility.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Acid value &middot; error<\/div><div class=\"mv\" data-to=\"0.015\" data-dec=\"3\" data-suffix=\"mg KOH\/g\">0<\/div><p>Mean absolute error against the reference titration - a precise endpoint read from the acid\/ester carbonyl band ratio.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Viscosity &middot; same spectrum<\/div><div class=\"mv\" data-to=\"0.998\" data-dec=\"3\" data-prefix=\"R&nbsp;\">R&nbsp;0<\/div><p>Viscosity built live from the same spectrum, R 0.988 to 0.998 - stop the reactor on data, not on the clock.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Result &middot; vs titration<\/div><div class=\"mv\" data-to=\"5\" data-suffix=\"s\">0<\/div><p>A value in real time at the reactor, against 30 to 60 min ISO 3682 titration that needs a reactor stop and manual sampling.<\/p><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 03 \u00b7 STUDY BY STUDY ===== -->\n<section id=\"fs-studies\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">03<\/span>\n      <span class=\"eyebrow\">Study by study<\/span>\n      <h2 class=\"h2\">The feasibility work behind the numbers.<\/h2>\n      <p class=\"lead\">The studies are anonymized by policy - no producer names, no locations. The chemistry, the bands and the numbers stay exactly as measured.<\/p>\n    <\/div>\n\n    <div class=\"tabpanels reveal\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">Alkyd resins &middot; At-line + in-line &middot; 785 nm immersion probe &middot; Result: validated<\/span>\n          <h3>Acid value and viscosity from one spectrum<\/h3>\n          <p>A resin producer controlled the two endpoint parameters of its alkyd resins - acid value and viscosity - by ISO 3682 titration and offline viscometry, with results arriving well after the reaction had moved on. The study ran in two stages on alkyd resin in organic solvent (white spirit D40, xylene): at-line on samples, then in-line with the Spectrally X1 immersion probe under near-process conditions, without sample preparation.<\/p>\n          <ul>\n            <li>Acid value has no single dedicated band, so a CNN chemometric model links the whole Raman spectrum to the parameter, built on the acid\/ester carbonyl (C=O) band ratio near 1710 \/ 1730 cm&#8315;&sup1; - advanced chemometrics, not simple peak picking<\/li>\n            <li>Acid value model vs lab R 0.982 to 0.998, with a mean absolute error of about 0.015 mg KOH\/g against ISO 3682 titration<\/li>\n            <li>Viscosity read from the same spectrum at R 0.988 to 0.998 - one measurement, both endpoint parameters<\/li>\n            <li>Result in real time at the reactor, against a 30-to-60-minute titration that requires stopping the reactor and sampling from a medium above 220 C<\/li>\n          <\/ul>\n        <\/div>\n        <div class=\"tp-photo\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/probe-resin-reactor.jpg\" alt=\"Spectrally X1 PROBE flange-mounted on an alkyd resin reactor line\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"tabpanels reveal\" style=\"margin-top:28px\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">Paint filler &amp; pigment identification &middot; Feasibility &middot; Result: validated<\/span>\n          <h3>Filler and pigment identity on the resin matrix<\/h3>\n          <p>A companion study confirmed filler and pigment identification on the customer's own paint and resin matrix, run through the same sequence: Samples, Measure, Model, Report. The molecular fingerprint carries the identity, and the model reads it directly from the spectrum.<\/p>\n          <ul>\n            <li>Measured spectra with band assignments on the customer's resin matrix<\/li>\n            <li>A chemometric model built on that matrix, validated against the reference method (titration \/ GC)<\/li>\n            <li>Model metrics reported against the reference values, with a clear result<\/li>\n            <li>Same Raman platform and CNN core as the acid-value work - identity and composition from one molecular fingerprint<\/li>\n          <\/ul>\n        <\/div>\n        <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 04 \u00b7 HOW THE STUDY RUNS ===== -->\n<section id=\"fs-process\" class=\"ctx\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">04<\/span>\n      <span class=\"eyebrow\">How the study runs<\/span>\n      <h2 class=\"h2\">From a crate of samples to a validated model.<\/h2>\n      <p class=\"lead\">The sequence is the same whether the study runs in the Gekko lab or on-site at your plant with a mobile unit.<\/p>\n    <\/div>\n    <div class=\"how-grid\">\n      <div class=\"cycle reveal\">\n        <div style=\"font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue-400);margin-bottom:18px\">Study sequence<\/div>\n        <div class=\"ring\" id=\"gkms-cycle\">\n          <div class=\"cyc-step on\"><div class=\"ci\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M12 3.5c3 3.5 5 6.2 5 8.8a5 5 0 0 1-10 0c0-2.6 2-5.3 5-8.8z\"\/><\/svg><\/div><div class=\"ct\">Samples<\/div><\/div>\n          <div class=\"cyc-arrow\">&rarr;<\/div>\n          <div class=\"cyc-step\"><div class=\"ci\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><rect x=\"3\" y=\"9\" width=\"18\" height=\"6\" rx=\"1.5\"\/><path d=\"M12 3v6\"\/><circle cx=\"12\" cy=\"3.6\" r=\"1.4\" fill=\"currentColor\" stroke=\"none\"\/><\/svg><\/div><div class=\"ct\">Measure<\/div><\/div>\n          <div class=\"cyc-arrow\">&rarr;<\/div>\n          <div class=\"cyc-step\"><div class=\"ci\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><rect x=\"6.5\" y=\"6.5\" width=\"11\" height=\"11\" rx=\"2\"\/><rect x=\"10\" y=\"10\" width=\"4\" height=\"4\" rx=\"1\"\/><path d=\"M9.5 6.5V4M14.5 6.5V4M9.5 20v-2.5M14.5 20v-2.5M6.5 9.5H4M6.5 14.5H4M20 9.5h-2.5M20 14.5h-2.5\"\/><\/svg><\/div><div class=\"ct\">Model<\/div><\/div>\n          <div class=\"cyc-arrow\">&rarr;<\/div>\n          <div class=\"cyc-step\"><div class=\"ci\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M7 3h7l4 4v14H7z\"\/><path d=\"M14 3v4h4\"\/><path d=\"M10 12h5M10 16h5\"\/><\/svg><\/div><div class=\"ct\">Report<\/div><\/div>\n        <\/div>\n        <div class=\"cyc-cap\">Send representative samples or existing R&amp;D data. Measurement runs on a Spectrally X1 Raman spectrometer - 785 nm or 1064 nm, 8 cm&#8315;&sup1; resolution, 300-3500 cm&#8315;&sup1; - in parallel with your reference method. A CNN chemometric model is built on the full spectrum and validated against your reference values. The report closes with <b>the validated model and the accuracy figures on your resin<\/b>.<\/div>\n      <\/div>\n      <div class=\"how-points\">\n        <div class=\"how-point reveal\"><div class=\"hi\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><rect x=\"3\" y=\"4.5\" width=\"18\" height=\"12\" rx=\"1.5\"\/><path d=\"M8.5 20h7M12 16.5V20\"\/><path d=\"M7 11l2.5-2.5 2 2L15 7.5\"\/><\/svg><\/div><div><h4>Measured against your reference method<\/h4><p>Study samples are read in parallel on the Raman system and the method you run today - ISO 3682 acid-value titration, offline viscometry, GC for residual monomer. The model carries the agreement with those values, and that agreement is what the report shows.<\/p><\/div><\/div>\n        <div class=\"how-point reveal\"><div class=\"hi\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><rect x=\"3\" y=\"9\" width=\"18\" height=\"6\" rx=\"1.5\"\/><path d=\"M12 3v6\"\/><circle cx=\"12\" cy=\"3.6\" r=\"1.4\" fill=\"currentColor\" stroke=\"none\"\/><\/svg><\/div><div><h4>The mode matches your process<\/h4><p>At-line in vials for screening, an immersion probe for near-process conditions, or on-site measurement at the reactor with a mobile unit. Once the analyzer is on the line, each result lands in 5 s.<\/p><\/div><\/div>\n        <div class=\"how-point reveal\"><div class=\"hi\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M4 7h16M4 12h16M4 17h10\"\/><\/svg><\/div><div><h4>Built for viscous, fouling media<\/h4><p>Coating and composite reactors run drying oils, pigments and high-solids resin. The self-cleaning retractable probe - retract, rinse, return - keeps the optical window clean without interrupting measurement, and the 30 mW ATEX laser reads solvent-bearing media in Zone 0.<\/p><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 05 \u00b7 WHAT YOU RECEIVE ===== -->\n<section id=\"fs-deliverables\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">05<\/span>\n      <span class=\"eyebrow\">Deliverables<\/span>\n      <h2 class=\"h2\">What lands on your desk.<\/h2>\n      <p class=\"lead\">Every study closes with the same set of deliverables - the validated model and the numbers to take to a pilot.<\/p>\n    <\/div>\n\n    <div class=\"ctx-grid\">\n      <div class=\"ctx-item reveal\"><div class=\"k\">01 &middot; Report<\/div><div class=\"v\">Spectra, bands, metrics<\/div><p>Measured spectra with band assignments, model performance against your reference values, and the result on your resin.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">02 &middot; Model<\/div><div class=\"v\">Built on your matrix<\/div><p>A CNN chemometric model scoped to your alkyd, acrylic or composite chemistry - full-spectrum, built on the carbonyl or monomer bands - with its validity range.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">03 &middot; Recommendation<\/div><div class=\"v\">Mode and installation point<\/div><p>Where the measurement sits - immersion probe in the reactor or the circulation line, ATEX Zone 0 for solvent-bearing media - and the recommended hardware configuration for a pilot.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">04 &middot; Validity range<\/div><div class=\"v\">Stated up front<\/div><p>The parameter and matrix range the model is validated across, with the acid-value and viscosity accuracy quantified on your own resin.<\/p><\/div>\n    <\/div>\n\n    <div class=\"product\" style=\"margin-top:64px\">\n      <div class=\"reveal\">\n        <span class=\"eyebrow\">Ready to deploy<\/span>\n        <h2 class=\"h2\" style=\"margin:12px 0 14px\">The hardware the model runs on<\/h2>\n        <p class=\"lead\">A validated model transfers to the process as Spectrally X1 INLINE with the immersion Spectrally X1 PROBE and its self-cleaning module - the retract, rinse and return cycle keeps the optical window clean without interrupting measurement - and Spectrally OS turning the spectrum into acid value, viscosity and PASS\/FAIL for your PLC, DCS and MES. The 30 mW ATEX laser reads solvent-bearing alkyd media in Zone 0. Same chemistry, same bands, on your line, 24\/7, with deployment typically 3 to 5.5 months.<\/p>\n      <\/div>\n    <div class=\"tp-photo reveal\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/gen-coatings-plant-wide.jpg\" alt=\"Interior of a coating and resin production plant with stainless alkyd reactor vessels and process piping\"><\/div><\/div>\n  <\/div>\n<\/section>\n\n<div class=\"pager\">\n    <span><a href=\"\/coating-composite-resins\/how-it-works\/\">&larr; How it works<\/a><\/span>\n    <span><a href=\"\/coating-composite-resins\/compliance\/\">Compliance &rarr;<\/a><\/span>\n  <\/div>\n<section id=\"contact\">\n    <div class=\"wrap\">\n      <div class=\"cta reveal\">\n        <span class=\"eyebrow no-line\" style=\"color:#fff;justify-content:center\">Your next step<\/span>\n        <h2 class=\"h2\">Run the study on your resin.<\/h2>\n        <p>Send representative samples or R&amp;D data from your alkyd, acrylic or composite-resin process. We measure them against your reference method - ISO 3682 titration, offline viscometry or GC - build the CNN chemometric model on your matrix and hand you the validated model and the accuracy figures, ready to take to a pilot.<\/p>\n        <form class=\"gkms-form\" data-region=\"m4-coating-composite-resins\" data-region-label=\"Microsite M4 - Coating and composite resins\" data-source=\"microsite-m4-proof\" novalidate>\n          <div class=\"gkms-form-q\">What would you like to do?<\/div>\n          <div class=\"gkms-choices\" role=\"radiogroup\" aria-label=\"What would you like to do?\">\n            <button type=\"button\" class=\"gkms-opt is-sel\" data-val=\"feasibility\" role=\"radio\" aria-checked=\"true\">Feasibility study<\/button>\n            <button type=\"button\" class=\"gkms-opt\" data-val=\"workshop\" role=\"radio\" aria-checked=\"false\">Workshop seat<\/button>\n            <button type=\"button\" class=\"gkms-opt\" data-val=\"info\" role=\"radio\" aria-checked=\"false\">Send info<\/button>\n          <\/div>\n          <p class=\"gkms-hint\" id=\"gkms-hint\"><\/p>\n          <div class=\"gkms-row\">\n            <input type=\"email\" class=\"gkms-email\" name=\"email\" required placeholder=\"you@company.com\" autocomplete=\"email\" aria-label=\"Your work email\">\n            <button type=\"submit\" class=\"btn btn-light gkms-submit\">Send request<\/button>\n          <\/div>\n          <input type=\"text\" class=\"gkms-hp\" name=\"company_hp\" tabindex=\"-1\" autocomplete=\"off\" aria-hidden=\"true\">\n          <label class=\"gkms-consent\"><input type=\"checkbox\" class=\"gkms-consent-cb\" name=\"consent\" required><span>By submitting this form, I confirm I have read and understood the <a href=\"https:\/\/gekkophotonics.com\/en\/privacy-policy\/\" target=\"_blank\" rel=\"noopener\">privacy policy<\/a> <span class=\"gkms-req\">*<\/span><\/span><\/label>\n          <p class=\"gkms-msg\" aria-live=\"polite\"><\/p>\n        <\/form>\n        <p class=\"cta-alt\"><a href=\"https:\/\/gekkophotonics.com\/products\/spectrally-inline\/\">Explore Spectrally X1 INLINE -&gt;<\/a><\/p>\n      <\/div>\n    <\/div>\n  <\/section>\n<footer class=\"foot\">\n    <div class=\"wrap\">\n      <div class=\"foot-grid\">\n        <div>\n          <img decoding=\"async\" class=\"flogo\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/logo-full-3.png\" alt=\"Gekko Photonics\">\n          <p class=\"ftag\">Engineering-Driven Analytics. Real-time process composition with inline Raman spectroscopy.<\/p>\n        <\/div>\n        <div>\n          <h5>Platform<\/h5>\n          <a href=\"https:\/\/gekkophotonics.com\/products\/spectrally-inline\/\">Spectrally X1 INLINE<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">Spectrally X1 PROBE<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">Spectrally OS<\/a>\n        <\/div>\n        <div>\n          <h5>This mini-site<\/h5>\n          <a href=\"\/coating-composite-resins\/chemistry\/\">Chemistry<\/a>\n          <a href=\"\/coating-composite-resins\/what-we-measure\/\">What we measure<\/a>\n          <a href=\"\/coating-composite-resins\/how-it-works\/\">How it works<\/a>\n          <a href=\"\/coating-composite-resins\/proof\/\">Proof<\/a>\n          <a href=\"\/coating-composite-resins\/compliance\/\">Compliance<\/a>\n          <a href=\"\/coating-composite-resins\/instrument\/\">Instrument<\/a>\n        <\/div>\n        <div>\n          <h5>Contact<\/h5>\n          <a href=\"mailto:contact@gekkophotonics.com\">contact@gekkophotonics.com<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">gekkophotonics.com<\/a>\n          <div class=\"addr\">NextCorps, 260 E. 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