Make sure your Thermo Scientific™ Orion™ AQUAfast™ AQ4500 turbidity meter has the essentials with our Orion™ AQUAfast™ AQ4500 turbidity meter accessories that include turbidity vials, primary turbidity standards, formazin turbidity standards and more. Our Orion AQUAfast AQ4500 turbidity meter has advanced features including dual light sources and potable water/wastewater systems approved for US EPA regulatory reporting. keep pace with regulatory protocol changes; Use white light LEDs to comply with EPA 180.1 requirements or infrared (IR) LEDs to comply with ISO 7027 requirements. Select from measurement modes including EPA 180.1, ISO Nephelometric, ISO Absorption, % Transmittance, EBC and ASBC.This IP67 waterproof meter records 100 data points and offers an average battery life of 2500 hours of continuous use.