Industrial-grade vs laboratory-grade - which do you actually need?
Lab-grade chemicals can be 5-10× the price of industrial grade, and most of the time they're overkill. Here's how to pick the right grade for your application.
The grade ladder
From cheapest to most expensive: technical / industrial → reagent / lab → analytical → USP / pharma → electronic. Each step typically adds 1.5-3× to the price and tightens purity / heavy-metals limits.
Industrial grade
Suitable for cleaning, plant maintenance, water treatment, concrete and quarry duties, and any application where the chemical is consumed or discharged. Typical purity 95-99%.
Laboratory / reagent grade
Required for laboratory analytical work, calibration standards, and any process where minor impurities affect the result. Typical purity 99.9%+.
Pharma / USP grade
Required only for pharmaceutical manufacturing, food contact, or human-administered products. Significantly tighter heavy-metal and microbiological limits.
How to decide
Ask one question: does the impurity matter for the application? For 90% of B2B chemical purchases - cleaning, water treatment, concrete duties - industrial grade is correct. Anything stricter is overspending.