Total Dissolved Solids Back Catalog number: 50735 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674695 Napropamide, 100 µg/ml, Cyclohexane, 5ml Price on request 0744.12-K-IO 2-Ethyltetraline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 32367-54-7 Price on request 31070 EPA Method 502/524 Surrogate Standard #3, 2000µg/ml in MeOH, 1ml Price on request