ANSI | Cosmetics | Laboratory
ISO 24444:2019— In Vivo Determination of SPF
The introduction of an SPF (Sun Protection Factor) began in the 1930s. Austrian chemist Franz Greiter, inspired by a sunburn while climbing a mountain, developed…
ISO Standards in Gut Microbiome Research
We are quite literally full of bacteria. In fact, humans have more bacteria in their gut than cells in their body. The gut is thereby…
A Guide to Maintaining an Ultra-Low Temperature Freezer
Ultra-low freezers are an essential piece of lab equipment—and for good reason. They play a critical role in preserving and storing biological samples at temperatures…
ISO 6646:2011— Rice (Oryza sativa L.)
There are over 40,000 varieties of cultivated rice (the grass species Oryza sativa) worldwide. Every continent other than Antarctica produces some variety of rice: the…
NSF/ANSI 49-2024: Biosafety Cabinets Design and Performance
Biosafety Cabinetry and NSF/ANSI 49 Biosafety cabinets (BSCs) come in three classes. The higher the class, the greater the protection afforded to personnel, products, and…
ASTM D1193-24: Reagent Water
Since the primary goal of every laboratory is to produce accurate and reliable results, assuring the quality of reagent water (i.e., highly purified water) is…
ANSI | Cosmetics | Laboratory
ISO 24442:2022—Sun Protection Test Methods
While sunlight is an essential source of life and energy, it also creates major health challenges like sunburn, pigmentation, wrinkles, dermatitis, skin cancer, and aging….
ISO 33405:2024— Reference Materials
A reference material is a material or substance whose property values are sufficiently homogenous, stable, and well established to be used for calibration of an…
ANSI | Laboratory | Lighting
ASTM E1733-95(2014): Lighting in Laboratory Testing
When studying toxicant impacts on biological systems in the laboratory, artificial lighting is typically used. Since light can impact the responses of the test organism and…