Multi-element mixed standard solution | CR, MN, NI, MO, P | Steel Research Institute Nanogram | 50ML | Standard material (RM) - solution type

Multi-element mixed standard solution | TI, ZR, NB | Steel Research Institute Nano-Chemistry | 50ML | Standard material (RM) - solution type Quinine sulfate solution standard material for fluorescence spectrophotometer calibration (GBW(E)130745~130749 is 300 yuan per set, choose one standard material to order, it is a set, please do not buy repeatedly) Turbidity Standard Solution 300 Total arsenic (AS) standard solution Turbidity standard solution (0.5-4/set) (total validity period: 1 month)

Stray Light Standard - Lithium Carbonate, (2 x Permanently Sealed UV Cuvettes, with Blank) Multi-element mixed standard solution | AG, AS, SE, PB, CD, CO, NI, BE, V, MO, SB | 10UG/L | Steel Research Institute Nanogram | 50ML | Standard Material (RM) - Solution Type Potassium Chloride Conductivity Solution Standard Material | 100 S/CM (25 ) | Medium Test Standard Material | 200 ML | Standard Material (RM) - Solution Type hardness of water solution UV-Vis Spectrophotometer Standard Materials