Ammonia nitrogen standard solution in water | 10G/ML | BWRM | 50ML | Standard material (RM) - solution type

Multi-element mixed standard solution | MG, AL, K, CA, TI, FE | 100G/ML | Steel Research Institute Nanogram | 50ML | Standard material (RM) - solution type Stray Light Optical Filter Germanium, indium, bismuth multi-element standard solution (3 types) (total validity period: 3 months) Silver single element standard solution (3% nitric acid matrix) (total validity period: 12 months) Turbidity Standard NON RATIO 0.02 NTU, traceable to NIST

Turbidity Standards RATIO 0, 1 NTU, traceable to NIST Silver, arsenic, barium, cadmium, cobalt, copper, iron, magnesium, manganese, nickel, lead, zinc multi-element standard solutions (12 types) Multi-element mixed standard solution | AS, TE, CD, CR, ND, BE, PB, TL | 10G/ML | Steel Research Institute Nanogram | 50ML | Standard Material (RM) - Solution Type Silicon single crystal resistivity standard material | STANDARD SLICE FOR SINGLE CRYSTAL SILICON RESISTIVITY | China National Institute of Metrology | Set/4 pieces | Certified Reference Material (CRM) - Matrix type Silver in 1% nitric acid