If your lab must use certified reference materials (CRMs), please be sure to tell us when ordering so we can help you meet your regulatory requirements as we transition our inventory.
Ordering Notes
Technical Resources
Select a Product
catalog #
Product Name
conc. in solvent and volume
units
31030
605 Benzidines Calibration Mix
2,000 μg/mL each in methanol, 1 mL/ampul
ea.
31834
Benzidine Mix
2,000 μg/mL each in methylene chloride, 1 mL/ampul