Turbidity Standard NON RATIO 0.02 NTU, traceable to NIST

Turbidity Standards NON RATIO 0, 2 NTU, traceable to NIST Quinine sulfate solution standard material for fluorescence spectrophotometer calibration (GBW(E)130745~130749 is 300 yuan per set, choose one standard material to order, it is a set, please do not buy repeatedly) Iron in water | 100MG/L | Micro-standard material | 50ML | Standard material (RM) - solution type Stray light standard - sodium iodide, cutoff 260 nm (2 x permanently sealed UV cuvettes, with blank) Total Chromium (CR(T)) Element Standard Solution

Turbidity Standard Solution-20NTU Turbidity Standards NON RATIO 0, 0 NTU, traceable to NIST Multi-element mixed standard solution | SC, GE, RH, IN, RE | 100G/ML | Steel Research Institute Nanogram | 50ML | Standard material (RM) - solution type Brown-yellow standard colorimetric solution BY2 (European Pharmacopoeia) Stray Light Standard - Sodium Iodide Amber Bottle