Thermo Orion AQ4500 Turbidity Meter

The Thermo Orion AQ4500 turbidimeter has a dual source LED which allows readings that comply with both EPA-approved Orion Method AQ4500 and ISO 7027 methodologies.


  • Nephelometric and Ratiometric measurements with autoranging
  • Data log capacity of up to 100 data points
  • Includes turbidity standards kit, rugged carrying case, and replacement cuvettes
List Price $1,456.00
Your Price $1,310.40
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Thermo Orion AQ4500 Turbidity MeterAQ4500 Orion AQ4500 portable turbidity meter
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Thermo Orion AQUAfast IV RS-232 Cable AQ4CBL Orion AQUAfast IV RS-232 cable for data download & software updates
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Thermo Orion 4000 NTU Formazin Turbidity Standard AC45FZ Orion 4000 NTU Formazin turbidity standard, 475mL
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Thermo Orion AQUAfast IV Silicon Oil and Cloth Kit AC45S1 Orion AQUAfast IV silicon oil and cloth kit, 15mL
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Thermo Orion 24mm Replacement Turbidity Vials AC2T24 Orion 24mm replacement turbidity vials, 12 pack
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Thermo Orion AQUAfast IV Primary Turbidity Calibration Kit AC45ST Orion AQUAfast IV primary turbidity calibration kit, 60mL bottles
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The Thermo Orion AQ4500 turbidimeter offers advanced features not available on any other benchtop or portable turbidimeter. This dual light source turbidimeter allows the user to quickly and efficiently measure turbidity in compliance with either ISO 7027 Standard or EPA-approved alternate test method Orion Method AQ4500.

The Thermo Orion AQ4500 turbidity meter includes two light sources - a white-light LED or a near-infrared LED, which allows readings that comply with Orion Method AQ4500, ISO 7027, American Society of Brewing Chemists, or European Brewing Chemists methods.

Turbidity can be read in the range of 0 1000 NTU with a choice of units: NTU, FTU, FNU, ASBC and EBC. In the range of 0 40 NTU the turbidimeter offers a ratiometric range which improves accuracy by reducing or eliminating color interference

This portable field unit is IP67 waterproof with typical battery life of over 1000 hours on one set of batteries. The internal data logger holds up to 100 points that can later be uploaded to a computer (with AQ4CBL cable). The turbidimeter accepts 24 mm cuvettes and comes with a two year warranty.

  • Readings in the range of 0 to 1000 NTU with a choice of units: NTU, FTU, FNU, ASBC or EBC
  • The AQ4500 is IP67 waterproof to a depth of 3 meters
  • Compliant with EPA-approved alternate test method Orion Method AQ4500 or ISO 7027 Standard
  • Measurement range: 0 - 1000 NTU
  • Choice of units: NTU, FTU, FNU, ASBC, and EBC
  • Battery life: over 1000 hours
  • Datalog capacity: 100 points
  • Cuvette size: 24mm
  • (1) AQ4500 turbidity meter
  • (1) Turbidity standards kit (AC45ST)
  • (4) Sample cuvettes, 24mm
  • (1) Rugged carrying case
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