AQUAfast AQ3070 Chlorine Colorimeter

  • Pocket Size Colorimeter Free & Total Chlorine Measurement
  • Cost-effective Colorimeter Instantaneous results
  • High Accuracy over 0-2mg/l
Product Options


The AQUAfast AQ3070 chlorine colorimeter provides quick and easy free and total chlorine measurements for EPA reporting over a 0-2 mg/L range. The meter can measure up to 4 mg/L level with the same reagents, with the expanded range giving a real number if you are out of the EPA measurement range to quickly recover your process. The AQ3070 gives highly accurate, reproducible results.

The chlorine meter is small but rugged, with an IP67 rating and a large, easy to read display and a simple user interface which consists of just four keys. Not having to cover and uncover the vial in most lighting conditions results in a large time saving.

The AQ3070 chlorine colorimeter is supplied in a carrying case with test vials, stir rod, a cleaning brush and 100 each of Orion AQUAfast AC4P71 Free Chlorine and AC4P72 Total Chlorine powder reagent packets. The chlorine colorimeter also contains calibration curves for Chlorine Dioxide, pH and Cyanuric Acid (reagents are sold separately).

Manufactured by: Thermo Scientific
Model: AQUAfast AQ3070 Chlorine Colorimeter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Food and beverage
Drinking water


Meter Specifications
Light Source Light Emitting Diode (LED)
Wavelength 525 nm
Detector Silicon photodiode
Absorbance Range 0 to 2.5 Abs
Calibration Points Not required if desired; 1 point per
Display Customized crystal display (LCD)
with icons
Sample Cells Glass screw cap vials with fill line and
indexing mark, 25 mm (diameter)
Sample Size 10 mL (0.33 oz)
Operating and
Sample Temperature
0 to 50 °C (32 to 122 °F)
Operating Humidity
0 to 90% relative humidity,
non-condensing at 30 °C (86 °F)
Power Supply 4 AAA alkaline batteries
Battery Life > 3000 tests
CE, cTUVus, (TUV 3-in-1 to EMC,
US and Canadian standards)
Enclosure Rating IP67 (TUV)
Weight and
Meter kit in carrying case: 2.0 kg
(4.4 lb) Carrying case: 25 cm (width) x
34 cm (length) x 15 cm (height),
(10.5 in x 14 in x 6 in)
Measurement Parameter Specifications
Chlorine Free and Total
Range 0.02 to 4.0 mg/L
US EPA range 0.03 to 2.0 mg/L
Resolution 0.01 mg/L (0.02 to 1.99 mg/L)
0.1 mg/L (2.0 to 4.0 mg/L)
Accuracy ± 0.02 mg/L (0.02 to 0.5 mg/L)
± 0.2 mg/L (0.6 to 4.0 mg/L)
Cyanuric Acid
Range (Resolution) 5 to 90 mg/L (1 mg/L)
Accuracy ± 4 mg/L
Range (Resolution) 5.9 to 8.2 pH (0.1 pH)
Accuracy ± 0.1 pH
Chlorine Dioxide
Range 0 to 9.0 mg/L
Resolution 0.01 mg/L (0 to 4.6 mg/L)
0.1 mg/L (4.7 to 9.0 mg/L)
Accuracy ± 0.10 mg/L (0 to 4.0 mg/L)
± 0.3 mg/L (4.1 to 9.0 mg/L)