• Dual Source to comply with EPA 180.1 and ISO 7027 
• Nephelometric and Ratiometric measurements with Autoranging
• IP67 Waterproof portable Turbidity Meter

Thermo Scientific introduces the Orion AQ4500 Turbidimeter which offers advanced features not available on any other benchtop or portable turbidimeter. The AQ4500 offers a dual source LED which allows readings that comply with both EPA 180.1 and ISO 7027. 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 AQ4500 offers a ratiometric range which will give EPA, GLI method 2 equivalent numbers. This portable field unit is truly IP67 waterproof with typical battery life of over 1000 hours on one set of batteries and datalog capacity of 100 points which can later be downloaded to a printer or computer. The AQ4500 accepts 24 mm cuvettes and comes with a two year warranty.