hardness of water solution

Multi-element mixed standard solution | AL, AS, AU, B, BA, CA, CD, CO, CR, CU, FE, HG, IR, K, LI, MG, MN, MO, NA, NI, PB, PD, PT, RH, RU, SB, SE, SN, TL, V, W, ZR | 100G/ML | Steel Research Nanogram | 50ML | Standard Material (RM) - Solution Type Total arsenic (AS) standard solution Cadmium solution standard substance for atomic absorption spectrophotometer calibration (CD3.00NG/ML) Total Base Number Standard: 50 MG/G KOH Elemental impurities, in accordance with ICH Q3D parenteral elemental impurities guidelines, standard 3

Arsenic (AS) solution standard material for atomic absorption spectrophotometer Total Organic Carbon Solution Standard Indium single element standard solution (10% nitric acid matrix) (total validity period: 12 months) Cast aluminum alloy spectral analysis standard material Turbidity Standard NON RATIO 40 NTU, traceable to NIST