Features: • Easy-to-use portable turbidimeter is equipped with a large LCD display. • 2 to 5 points calibration using the Formazin Standards. • Selectable four turbidity units, including the NTU (Nephelometric Turbidity Unit), FNU (Formazine Turbidity Unit), EBC (European Brewery Convention) and ASBC (American Society of Brewing Chemists). • Single measurement model automatically recognizes the stable reading. • Continuous measurement model that can used for indexing and matching the sample vials. • Auto-Power Off helps user effectively conserve battery life. • System menu allows setting the 7 parameters, including the date and time, resolution, etc. • Reset feature automatically resumes all settings back to factory default options. • Expanded memory stores and recalls up to 100 readings. • Stored data can be transferred into computer by USB communication interface. • Multi-mode power scheme (battery, power adapter, USB port) ensures that use the meter smoothly. Specification Model TB100 Measurement Method ISO 7027 nephelometric method (90°) Measurement Range 0~1100 NTU/FNU, 0~275 EBC, 0~9999 ASBC Resolution 0.01 (0~100 NTU), 0.1 (100~999 NTU), 1 (999~1100 NTU) Accuracy ±2% (0~500 NTU), ±3% (501~1100 NTU) Calibration Standards 0.02, 10.00, 200, 500, 1000 NTU or User-Defined Light Source Infrared-emitting diode (850 nm wavelength) Detector Silicon Photodiode Stray Light < 0.02 NTU Sample Vials 60(H)×25(Dia.)mm Power Off Manual or Automatic (15 minutes) Memory Stores up to 100 data sets Output USB Communication Interface Operating Temperature 0~60°C Power Requirements 1×9V Battery Dimensions 180(L)×85(W)×70(H)mm Weight 300g