Brown-red standard colorimetric solution color number 1

Silver, aluminum, boron, barium, beryllium, calcium, cadmium, cobalt, copper, iron, potassium, lithium, magnesium, manganese, molybdenum, sodium, nickel, lead, selenium, strontium, antimony, thallium, vanadium, zinc multi-element standard solution (total validity period: 3 months) Turbidity Standards NON RATIO 0, 1 NTU, traceable to NIST Silver, bismuth, cadmium, mercury, zinc multi-element standard solution (5 kinds) (total validity period: 12 months) Turbidity Standard NON RATIO 100 NTU, traceable to NIST Potassium chloride conductivity solution standard material | 73.9S/CM medium: H2O | SDRM/Shanye | 500ML | Standard material (RM) - solution type

Total Dissolved Solids Standard Conductivity Liquid, TDS STANDARD 1382 PPM NACL @25C, traceable to NIST Turbidity Standard RATIO 800 NTU, traceable to NIST Total Nitrogen/Total Phosphorus Mixed Standard Solution Total Mercury (HG) Standard Solution Sodium in water | 500MG/L | Micro-standard material | 30ML | Standard material (RM) - solution type