--- title: "UV-protect volumetric flasks | VITLAB knowledge base" url: "https://www.vitlab.com/service-support/knowledge/uv-protect" description: Greater protection for light-sensitive substances. Light shielding is an important factor for numerous laboratory applications date: 2025-07-04 modified: 2026-03-03 lastUpdated: 2026-03-03 site: VITLAB GmbH --- # UV-protect volumetric flasks | VITLAB knowledge base - EN - [DE](https://www.vitlab.com/de/service-support/wissen/uv-protect) - [ES](https://www.vitlab.com/es/servicio-y-asistencia/conocimiento/uv-protect) - [FR](https://www.vitlab.com/fr/service-et-assistance/savoir/uv-protect) back - [Products](https://www.vitlab.com/javascript:void(0)) - [Liquid Handling](https://www.vitlab.com/products/liquid-handling) - [Volumetric Measurement](https://www.vitlab.com/products/volumetric-measurement) - [General Lab Products](https://www.vitlab.com/products/general-lab-products) - [Food & Beverage](https://www.vitlab.com/products/food-beverage) - [Bottles](https://www.vitlab.com/products/bottles) - [Promotional](https://www.vitlab.com/company/promotional) - [Service & Support](https://www.vitlab.com/javascript:void(0)) - [Certificates of Performance](https://www.vitlab.com/service-support/certificates) - [Downloads](https://www.vitlab.com/service-support/downloads) - [Knowledge](https://www.vitlab.com/service-support/knowledge) - [Videos](https://www.vitlab.com/service-support/videos) - [Compliance](https://www.vitlab.com/javascript:void(0)) - [Compliance at VITLAB](https://www.vitlab.com/compliance/compliance-at-vitlab) - [Code of Conduct](https://www.vitlab.com/compliance/code-of-conduct) - [REACH Regulation](https://www.vitlab.com/compliance/reach-regulation) - [More](https://www.vitlab.com/compliance/compliance-at-vitlab) - [Company](https://www.vitlab.com/javascript:void(0)) - [About VITLAB](https://www.vitlab.com/company/about-vitlab) - [Newsroom](https://www.vitlab.com/company/newsroom) - [Certified quality](https://www.vitlab.com/company/certified-quality) - [Service & Logistics](https://www.vitlab.com/company/service-logistics) - [Promotional](https://www.vitlab.com/company/promotional) - [Fairs & Exhibitions](https://www.vitlab.com/company/fairs-exhibitions) - [Jobs](https://group.brand.de/en/about-us/about-us) - [Distributors](https://www.vitlab.com/javascript:void(0)) - [Distributors Worldwide](https://www.vitlab.com/distributors/worldwide) - [Distributors Africa](https://www.vitlab.com/distributors/worldwide/africa) - [Distributors Asia](https://www.vitlab.com/distributors/worldwide/asia) - [Distributors Australia / New Zealand](https://www.vitlab.com/distributors/worldwide/australia-newzealand) - [Distributors Central / Latin America](https://www.vitlab.com/distributors/worldwide/central-latinamerica) - [Distributors Europe](https://www.vitlab.com/distributors/worldwide/europe) - [Distributors North America / Canada](https://www.vitlab.com/distributors/worldwide/northamerica-canada) - [Contact](https://www.vitlab.com/javascript:void(0)) - [Contact us](https://www.vitlab.com/contact/contact-us) - [ ](https://www.vitlab.com/suche "search") [ ](https://www.vitlab.com/ "Startpage VITLAB GmbH") [ ](https://www.vitlab.com/contact/contact-us "contact") Menu UV-protect Greater protection for light-sensitive substances ============================================================== Light shielding is an important factor for numerous laboratory applications (see Fields of Application). Accordingly, volumetric flasks made of amber glass are part of the basic equipment of a laboratory. Alternatively, coloured plastic products are used. Both solutions have disadvantages in practice: The glass flasks are fragile and most plastic products are completely opaque so that the filling level can not be read. ![](https://www.vitlab.com/fileadmin/_processed_/6/1/csm_Volumetric_flask_UV_protect_675950_fd573d20b7.jpg) The UV-protect volumetric flasks are very close to the shade of amber glass, they are transparent and provide comparable protection for sensitive substances in the visible light spectrum (750 – 400 nm). In the UV range (380 – 200 nm), they shield even better. For the user, this means easier sample preparation through improved readability of the volume mark combined with higher UV absorption to protect the sample contents. Added to this are the higher break resistance and the very good chemical resistance of polymethylpentene. As PMP also has high temperature stability, the volumetric flasks are also ideal for use in biological laboratories, where products are autoclaved regularly at 121° C before use. This makes VITLAB® UV-protect the ideal alternative to conventional amber glass and conventional coloured plastic containers for most applications. Fields of Application ----------------------- In many fields of application, light-sensitive substances are used –, i.e. those which change or decompose through light. These include, for example, silver salts (silver chloride, silver nitrate), iodine solutions and pharmaceutical active ingredients. In laboratories, there are various sources of light (daylight, fluorescent tubes, UV lamps), from which these media must be effectively protected. The fields of Life Sciences and Microbiology, for example, deal with living organisms that are sensitive to light, such as light-sensitive microorganisms or cell cultures. These can come from an environment in which there is little to no light – , for example, from the deep sea or the soil. In environmental analysis, sampling under light protection is also often very important –, for example, in water samples. The sample is taken on site, sealed, transported to the laboratory and analysed at a later time. In the chemical-analytical field, custom-made standard solutions should last as long as possible in order to be able to carry out exact comparative analyses. Light irradiation can change the composition of a sample and lead to incorrect results. 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