{"id":3118,"date":"2026-08-06T15:24:24","date_gmt":"2026-08-06T13:24:24","guid":{"rendered":"https:\/\/gekkophotonics.com\/?post_type=case-study&p=3118"},"modified":"2026-08-06T15:46:11","modified_gmt":"2026-08-06T13:46:11","slug":"inline-pomiar-stezenia-formaldehydu-hcho-w-produkcji-formaliny","status":"publish","type":"case-study","link":"https:\/\/gekkophotonics.com\/en\/case-study\/inline-pomiar-stezenia-formaldehydu-hcho-w-produkcji-formaliny\/","title":{"rendered":"Inline measurement of formaldehyde (HCHO) concentration in formalin production"},"content":{"rendered":"
\n
\n
Industry<\/dt>\n
Formaldehyde production<\/dd>\n<\/div>\n
\n
Scope<\/dt>\n
Inline HCHO concentration measurement instead of sulfite titration<\/dd>\n<\/div>\n<\/dl>\n

Client context<\/h2>\n

Formalin (37\u201350% HCHO in water with a methanol stabilizer) is a key raw material for the entire amino and phenolic resin industry. It is produced by catalytic oxidation of methanol, and its quality directly translates into the quality of resins at the customer's site.<\/p>\n

Formaldehyde producers currently lack a fast inline measurement of HCHO concentration in the final product. An off-spec batch (incorrect paraformaldehyde level, excess formic acid) reaches the customer and ruins their resin, while formaldehyde as a CMR Cat. 1B substance requires a CoA with every delivery.<\/p>\n

Challenge.<\/h2>\n
    \n
  • Sulfite titration (ISO 9020 \/ ASTM E1179) takes 30\u201345 minutes and requires manual sample collection.<\/li>\n
  • The lack of rapid composition verification delays decisions during formalin filling and storage.<\/li>\n
  • Formaldehyde is a CMR Cat. 1B substance \u2013 a CoA per delivery is mandatory for every customer.<\/li>\n
  • NIR is sometimes used, but it provides a weaker signal at low paraformaldehyde concentrations.<\/li>\n<\/ul>\n

    Solution<\/h2>\n

    Spectrally\u2122 X1 measures HCHO concentration, as well as methanol and paraformaldehyde, directly in the production line, at the filling line, or in the warehouse. The measurement takes seconds, with no sample collection and no reagents.<\/p>\n

    For formalin customers, the same measurement means composition verification at every receipt in 1\u20132 minutes instead of 30\u201345 minutes of titration. Raman is a natural fit here, as water gives a weak signal and does not mask the analytes.<\/p>\n

    Results<\/h2>\n
    \n\n\n\n\n\n\n\n
    Metric<\/th>\nResult<\/th>\n<\/tr>\n<\/thead>\n
    What we measure in-line<\/td>\nHCHO, methanol, and paraformaldehyde concentrations<\/td>\n<\/tr>\n
    Composition verification time<\/td>\n1\u20132 minutes instead of 30\u201345 minutes of sulfite titration<\/td>\n<\/tr>\n
    Compliance<\/td>\nCMR Cat. 1B \u2013 CoA documentation per delivery<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    What this means for your process<\/h2>\n

    If you produce formalin or receive it as a raw material, inline measurement shortens composition verification from dozens of minutes to minutes and provides real-time quality control as well as documentation to meet the CoA requirement.<\/p>\n

    The fastest way to confirm this on your medium is a short feasibility study on real samples.<\/p>","protected":false},"excerpt":{"rendered":"

    Today, formaldehyde producers verify HCHO concentration using sulfite titration, which takes 30\u201345 minutes. We demonstrate how to measure HCHO, methanol, and paraformaldehyde concentrations directly in-line, in real time.<\/p>","protected":false},"author":1,"featured_media":3133,"menu_order":0,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","industry-grid":""},"class_list":["post-3118","case-study","type-case-study","status-publish","format-standard","has-post-thumbnail","hentry"],"blocksy_meta":[],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study"}],"about":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/types\/case-study"}],"author":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/comments?post=3118"}],"version-history":[{"count":3,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3118\/revisions"}],"predecessor-version":[{"id":3162,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3118\/revisions\/3162"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/media\/3133"}],"wp:attachment":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/media?parent=3118"}],"curies":[{"name":"entry","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}