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Infrared Turbidity meter TB 211 IR


The infrared turbidity meter TB 211 IR is used for measurement by the intensity of the scattered light at an angle of 90 degrees, digital readout. The measuring range of this turbidity meter is 0.01-1100 TE/F or FNU/NTU. The set is supplied in a handy case.

  • USB interface
  • Range 0.01 - 1100 NTU
  • Measurement according to EN ISO 7027
  • Measurement with infrared light at an angle of 90°


This compact infrared turbidity measuring instrument TB 211 IR is ideal for fast and accurate on-site analysis. The meter is easy and quick to use and it is an accurate instrument for determining turbidity. 

It is measured as provided in EN ISO 7027, the scattered light at an angle of 90°. The wide measuring ranges from 0.01 to 1100 TE / F = NTU = FNU with a detection limit of 0.01 NTU, allows the use of the device in different areas, from drinking water to wastewater.

Since the measurements are made by means of infrared light, both coloured and collarless water samples can be measured. A direct transfer of the measurement results to a PC is through the USB interface TB 211 IR easy to set up. The necessary USB cable is already part of the delivery. 


  • General water Control/Treatment 
  • Drinking Water Control/Treatment 
  • Pool Water Control/Treatment 

Set contains

  • Instrument in carrying case 
  • 4 turbidity standards (< 0.1, 20, 200 and 800 NTU) 
  • 9V battery 
  • Vials (ø 24 millimetre) with lids (2 pieces)
  • USB cable 1.5 metre 
  • Warranty information 
  • Certificate of Compliance 
  • Instruction manual 


Infrared Turbidity meter TB 211 IR
Optics Temperature compensated LED (λ = 860 nm) and photosensor amplifier in waterproof sample chamber, infrared light
Accuracy ± 2.5 % of reading, or ± 0.01 NTU, whichever is bigger, in the range of 0.01 - 500 NTU; ± 5 % of reading in the range of 500 - 1000 NTU
Operation Polycarbonate membrane, splash proof
Display Backlit LCD
Suitable Vials Round Cuvettes 24 mm
Interfaces Micro USB
Measuring Principle Nephelometric (90° scattered light)
Measuring Range 0,01-1100 NTU (Auto range)
Internal Storage Internal ring memory for 125 data sets
Clock Real Time Clock and Date
Environmental Conditions 5 - 40 °C at 30 - 90 % relative humidity (non-condensing)
Dimensions 110 x 55 x 190 mm
Weight 400 g (basic unit)
Sandra van der Linden

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