Copper solution standard substance for atomic absorption spectrophotometer calibration (CU5.00G/ML)

Aluminum single element standard solution | C (AL) = 50G / ML | Bolinda | 100ML * 2 | Standard material (RM) - solution type Standard Solution of Germanium Turbidity Standard NON RATIO 5 NTU, traceable to NIST Specific surface area standard material | China National Institute of Metrology | 1EA | Certified Reference Material (CRM) - Matrix Type Pullulan (glutinous rice flour) solution standard substance

Standard materials for specific surface area, pore volume and pore size of ordered nanoporous silica Turbidity standard solution | 250NTU | Qinjing | 100ML Turbidity Standard RATIO 2000 NTU, traceable to NIST 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 phosphorus standard solution (total validity period: 6 months)