Tungsten / IR Lab Turbidity Meters 0-10,000 NTU

A Product by WTW GmbH
Turb® 555 SpecificationsTurb® 555 IR SpecificationsResources

Flexible and powerful Features of Turb® 555


  • Measuring range 0.0001 to 10 000 NTU with AutoRange function
  • Automatic 1 ... 5 point calibration
  • Flow-through measurement
  • Ratio

Measuring principles Nephelometric ratio method transmission
Light source Tungsten lamp
Measuring Range
NTU 0 ... 10000
EBC 0 ... 2450
Nephelos 0 ... 67000
Resolution 0.0001 NTU from 0.0001 ... 9.9999 NTU
0.001 NTU from 10.000 ... 99.999 NTU
0.01 NTU from 100.00 ... 999.99 NTU
0.1 NTU from 1000.0 ... 9999.9 NTU
Accuracy ±2% of value or ±0.01 NTU
Reproducibility ±1% of value or ±0.01 NTU
Calibration Automatic 1...5 point calibration
Response time < 6 seconds
Cuvettes 28 x 70 mm (1.1 x 2.76 in) round cuvette, 25 ml sample volume
Operating temperature 0 ... +50 °C (32 … 122 °F)
Power supply Plug-in power supply 100 - 240 VAC ±10% / 47 - 63 Hz

Flexible and powerful Features of Turb® 555 IR


  • Measuring range 0.0001 to 10 000 NTU with AutoRange function
  • Automatic 1 ... 5 point calibration
  • Flow-through measurement
  • Ratio

Measuring principles Nephelometric ratio method transmission
Light source IR-LED
Measuring Range
NTU 0 ... 10000
FNU 0 ... 10000
EBC 0 ... 2450
FAU 0 ... 10000
Resolution 0.0001 NTU from 0.0001 ... 9.9999 NTU
0.001 NTU from 10.000 ... 99.999 NTU
0.01 NTU from 100.00 ... 999.99 NTU
0.1 NTU from 1000.0 ... 9999.9 NTU
Accuracy ±2% of value or ±0.01 NTU
Reproducibility ±1% of value or ±0.01 NTU
Calibration Automatic 1...5 point calibration
Response time < 6 seconds
Cuvettes 28 x 70 mm (1.1 x 2.76 in) round cuvette, 25 ml sample volume
Operating temperature 0 ... +50 °C (32 … 122 °F)
Power supply Plug-in power supply 100 - 240 VAC ±10% / 47 - 63 Hz
Resources