TB 250 WL

  • Ideal for regulatory monitoring, process control pr field use
  • Simple operation
  • Easy calibration
  • Auto-Ranging

Thank you for your interest in the TB250 turbidimeter. This instrument has been discontinued and has been replaced by the new TB350 portable turbidimeter. To receive more information, please click on the TB350 button below.

The TB350 turbidimeter delivers the most reliable measurements for low range to high range samples, without sacrificing accuracy. It is ideal for field applications such as distribution monitoring, environmental samples or customers that test a wide range of samples.
We will continue to support accessories and standards affiliated with the TB250 turbidimeters.



Part Number 194200


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  • Drinking Water Treatment
  • Pool Water Control
  • Pool Water Treatment
  • Waste Water Treatment

Product information

The TB 250 WL allows easy turbidity measurement in either the field or in the laboratory. Using a "white light“ source and 90° detection, the TB 250 WL meets the specifications for EPA turbidity measurement (EPA Standard 180.1). A power efficient micro-circuit design allows the instrument to yield 5000 tests on 4-AA alkaline batteries with an estimated 7-10 year bulb life. Integrated diagnostics confirm proper operation and accuracy. The instrument features an Auto-Ranging feature that automatically selects the correct turbidity range for your sample. Calibration is simple with the included calibration standards. The instrument comes with all required items for testing including the TB 250 WL Turbidimeter, sample cuvettes, batteries, calibration set, operators manual and carrying case.
Measuring Principle nephelometric (90° scattered light)
Measuring Range 0,01 bis 1100 NTU
Display large LCD display
Operation 5 key polycarbonate membrane, splash proof
Power Supply 4 batteries (AA)
Portability Portable
Compliance CE
Dimensions 3.74 x 1.77 x 8.27"
Weight with Packaging (Basic unit)
Testparameter Measuring Range Method No.
Turbidity 0.01 - 1100 NTU
Title Online Download Type Format Language Direct Download
Datasheet 194200 - TB 250 WL Datasheet PDF (0.20 MB)
Brochure - Competence in turbidity Brochure PDF (2.01 MB)
Instruction Manual Instruction Manual PDF (1.05 MB)
  • White light source
  • Range 0.01 – 1100 NTU according to USEPA-approval
  • 2 sample vials
  • 3 turbidity standards
  • 4 batteries
  • Instruction manual
  • Warranty information
Title SDS Country Direct Download
T-CALplus / T-CAL Standard 0.3 NTU / 1.0 NTU / 5.0 NTU / 10 NTU
T-CALplus / T-CAL Standard 200 NTU / 500 NTU / 800 NTU / 1000 NTU
T-CALplus / T-CAL Standard < 0.1 NTU