Turbidity calibration solution Shanghai Sanxin TN200-1 Polymer Calibration Solution (suitable for red light instruments) 20, 100, 400, 800 NTU (4 × 20ml) Call
Turbidity calibration solution Shanghai Sanxin TN500-2 Long acting Zero Turbidity Water 0.0NTU (100ml) Call
Turbidity calibration solution Shanghai Sanxin TN500-6 Long acting Zero Turbidity Water 0.0NTU (250ml) Call
Turbidity calibration solution Shanghai Sanxin TN500-1 Polymer Calibration Solution (Suitable for White Light Instruments) 20, 100, 400, 800 NTU (4 × 20ml) Call