Cadmium solution standard substance for atomic absorption spectrophotometer calibration (CD0.50NG/ML)

Copper solution standard substance for atomic absorption spectrophotometer 12 kinds of metal elements mixed standard (AS, CD, CO, CR, CU, HG, NI, MO, PB, SE, ZN, SB) | Multi-component | 1000G/ML | CATO | 100ML | Standard material (RM) - solution type Europium Aqueous Solution Indium single element standard solution Silver, aluminum, arsenic, boron, barium, beryllium, bismuth, calcium, cadmium, cobalt, chromium, copper, iron, potassium, lithium, magnesium, manganese, molybdenum, sodium, nickel, phosphorus, lead, antimony, tin, silicon, selenium, strontium, titanium, vanadium, zinc, zirconium multi-element standard solution (31 kinds) (total validity period: 12 months)

Brown-red standard colorimetric solution color number 0.5 UV-Vis Spectrophotometer Standard Materials Turbidity Standard Solution-20NTU Chromium standard solution | 1.0MG/L | BWRM | 20ML | Standard material (RM) - solution type Total nitrogen standard solution | 15G/ML | Qinjing | 50ML