Turbidity standard colorimetric solution

Brown-red standard colorimetric solution No. 2 (Chinese Pharmacopoeia) Aluminum single element standard solution | C (AL) = 50G / ML | Bolinda | 100ML * 2 | Standard material (RM) - solution type Turbidity Standard NON RATIO 5 NTU, traceable to NIST Multi-element mixed standard solution | Y, ZR, BA, LA, CE | 100G/ML | Steel Research Institute Nanogram | 50ML | Standard material (RM) - solution type Total phosphorus standard solution (total validity period: 12 months)

Total phosphorus standard solution (total validity period: 6 months) Supporting reagents for total phosphorus/total nitrogen online monitoring instruments (total nitrogen standard solution) Brown-red standard colorimetric solution color number 3 Silver, aluminum, arsenic, boron, barium, beryllium, bismuth, calcium multi-element standard solution (total validity period: 12 months) Silver (AG) element standard solution (for AAS)