Measurement Range: 0~1100 NTU/FNU, 0~275EBC, 0~9999 ASBCResolution: 0.01(0~100 NTU), 0.1 (100~999NTU), 1 (999~1100 NTU)Accuracy: ±2%(0~500 NTU), ±3% (501~1100NTU)Default Calibration Standards: 0.02 NTU,200 NTU, 500 NTU, 1000 NTU or User-DefinedLight Source: Infrared-emitting diode (850nm wave length)Detector: Silicon PhotodiodeStray Light: <0.02 NTUSample Vials: 60(H)×25(Dia)mmPower Off: Manualor Automatic (15 minutes)Reset Function: YesMemory: Stores up to 100 data setsOutput: USB Communication InterfaceOperating Temperature: 0~60°CImportant Notes for Measurement and Calibration:Do not hold the meter in the hand during measurement and calibration.Glass vials and caps must be cleaned thoroughly with deionised water after each measurement. Minor residuals can cause errors.The outside of the vial must be clean and dry, before starting the test. Wipe the vial with alint-free cloth to remove fingerprints or water drops.If the vial has minor scratches or scuffs, add a few drops of silicone oil to outside of the vial. Wipe with lint-free cloth.For the low turbidity samples (0 to200NTU), we recommend that you use the same be aligned with the arrow on the meter.To avoid errors from ambient light interference, do not use the meter in bright sunlight. Always close the light shield lid during measurement and Calibration.Avoid spillage of water in the sample chamber. It may cause damage to the meter.