Turbidity Standard RATIO 60 NTU, traceable to NIST

Germanium single element standard solution Multi-element mixed standard solution | Y, CA, CR, CU, FE, ZN, PB | 1000G/ML | Steel Research Institute Nanogram | 50ML | Standard material (RM) - solution type Total nitrogen standard solution | 15G/ML | Qinjing | 100ML Brown-red standard colorimetric solution No. 0.5-10 (Chinese Pharmacopoeia) (total validity period: 12 months) Total phosphorus and total nitrogen mixed standard solution

Total residual chlorine solution standard substance (HJ585) Sulfide standard solution | 1000G/ML | Zhongchuang Zhongrui | 20ML | Standard material (RM) - solution type Turbidity Standard NON RATIO 0.02 NTU, traceable to NIST Total phosphorus standard solution/in terms of P Total acid value standard: 2.0MG/G KOH