CLSI H56-A: Body Fluid Analysis for Cellular Composition
Under a microscope, cells suspended in cerebrospinal, pleural, peritoneal, bronchoalveolar, or synovial fluid can provide important clues about what is happening inside the body. For…
ISO 5725-2:2025 – Accuracy Method For Repeatability
Through the scientific method, repeatability and reproducibility fortify accuracy. Unfortunately, differing operators, equipment, calibration, environment, and time introduce variations and potential inaccuracies in measurements. An…
ASTM B117-26: Standard Practice for Operating Salt Spray (Fog) Apparatus
Even the most durable or permanent items can at some point deteriorate. That doesn’t mean these qualities should be ignored. However, the ability to remain…
ISO 8255-1:2017—Microscope Cover Glasses
Scientific laboratories need high-precision microscope slides and cover glasses for a wide range of uses, ranging from simple optical microscopy to more advanced cytology and…
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…