Transmittance for UV Spectrophotometry Stray Light Standard - Lithium Carbonate Amber Bottle Indium, cesium, niobium, titanium, hafnium, tantalum multi-element standard solutions (6 types) (total validity period: 12 months) 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 dichromate absorbance solution series standard substances Cadmium solution standard substance for atomic absorption spectrophotometer calibration (CD1.00NG/ML) Potassium dichromate standard solution (0.05MOL/L sulfuric acid matrix) (easy to make drugs) (total validity period: 12 months) Barrenwort Potassium dichromate aqueous solution standard substance for titration analysis Elemental ICP-MS Standard Solutions