| Grade |
meets USP testing specifications |
ACS reagent ≥99.0% |
plant cell culture tested, >99.5% |
cell, insect cell culture tested |
for molecular biology, ≥98% (titration) |
BPC, ≥99.5% (titration), cell culture tested |
SigmaUltra, ≥99.5% |
BioUltra, for molecular biology, ≥99.5% (AT) |