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  • Turb 550/555 : Laboratory Turbidity meter

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    measures from 0.0001 to 10,000 NTU

    Turb 550/555
    Laboratory Turbidity meter

    Brand: WTW

    Turb 550

    • Measuring range: 0.01 to 1,000 NTU with autoranging
    • Automatic 1-3 point calibration
    • Flow-through measurement

    Turb 555

    • Measuring range: 0.0001 to 10,000 NTU with autoranging
    • Automatic 1-5 point calibration
    • Flow-through measurement
    • Values displayed in:
      • NTU
      • EBC
      • FNU, FAU (Turb® 555 IR)
      • Nephelos (Turb® 555)
    Model Turb® 550 Turb® 550 IR Turb® 555 Turb® 555 IR
    Measuring principles Nephelometric Nephelometric
    Ratio method
    Transmission
    Light source Tungsten lamp IR-LED Tungsten lamp IR-LED
    NTU
    FNU
    EBC
    Nephelos
    FAU
    0 … 1000



    0 … 1000
    0 … 1000


    0 … 10000

    0 … 2450
    0 … 67000
    0 … 10000
    0 … 10000
    0 … 2450

    0 … 10000
    Resolution 0.01 NTU from 0.00 … 9.99
    0.1 NTU from 10.0 … 99.9
    1 NTU from 100 … 1000
    0.0001 NTU from 0.0001 … 9.9999
    0.001 NTU from 10.000 … 99.999
    0.01 NTU from 100.00 … 999.99
    0.1 NTU from 1000.0 … 9999.9
    Accuracy ±2% of value or ±0.01 NTU 0 … 1000 NTU: ±2% of value or ±0.01 NTU
    1000 … 4000 NTU: ±5% of value
    4000 … 10000 NTU: ±10% of value
    Reproducibility ±1% of value or ±0.01 NTU
    Calibration Automatic 1…3 point calibration Automatic 1…5 point calibration
    Response time < 3 seconds < 6 seconds
    Cuvettes 28 x 70 mm (1.1 x 2.76 in) round cuvette, 25 ml sample volume
    AQA functions Calibration interval monitoring
    Calibration protocol
    Calibration interval monitoring
    Calibration protocol
    Password-protected access to calibration and configuration
    Time-controlled data transmission
    Operating temperature +10 … +40 °C (50 … 104 °F) 0 … +50 °C (32 … 122 °F)
    Power supply Plug-in power supply 100 – 240 VAC ±10% / 47 – 63 Hz

    noun_100440_cc