Aquafast AQ4000 Colorimeter
Aquafast AQ4000 Colorimeter

Introducing the AQ4000 Advanced Field Colorimeter, packed with features, which make water analysis as simple as 1-2-3.

1. Place the sample in a cuvette.
2. Position the cuvette in the AQ4000 and select the required measurement.
3. Read the result from the display.


The Aquafast IV AQ4000 can store up to 189 pre-programmed methods. As new tests are available, a simple upload procedure updates the colorimeter with the most current programs. The upload only takes a few minutes and keeps the AQ4000 current.

This rugged unit is waterproof to IP67 standards. The AQ4000 is so advanced that a user can create a custom method and customize the calibration. Up to 5 data points can be used to define a custom method. Ten custom methods can be stored in the colorimeter’s memory. The simple interface steps a user through set-up and measurement.

Selection of display units is push-button easy: concentration, absorbance or percent transmittance. Datalog 100 points in the field with a time and date tag and then download to a printer or computer in the lab. In addition to the Auto-Test cuvettes, the AQ4000 accepts round cuvettes with diameters of 13, 16 and 24mm. Best of all, the AQ4000 even carries a two-year warranty.

The Aquafast IV Colorimeter AQ4000 is the most advanced field portable colorimeter on the market today.

Available Test Kits

Aluminium 0 to 3 mg/L
Ammonia - LR 0 to 7 mg/L
Ammonia - HR 0 to 16 mg/L
Bromine 0 to 9 mg/L
Chlorine (free) 0 to 6 mg/L
Chlorine (total) 0 to 6 mg/L
Chlorine Dioxide 0 to 11 mg/L
Copper (soluble) 0 to 14 mg/L
Cyanide (free) 0 to 0.5 mg/L
Fluoride 0 to 2 mg/L
Hydrazine 0 to 1.2 mg/L
Iron 0 to 7 mg/L
Manganese 0 to 20 mg/L
Molybdate 0 to 30 mg/L
Nitrate 1 - LR 0 to 1.5 mg/L
Nitrate 2 - MR 0 to 3 mg/L
Nitrate 3 - HR 0 to 50 mg/L
Nitrite 0 to 0.8 mg/L
Oxygen 0 to 15 mg/L
Ozone 0 to 2 mg/L
pH 6.5 to 8.5 pH
Phosphate 1 – HR 0 to 80 mg/L
Phosphate 2 – LR 0 to 8 mg/L
Silica 0 to 14 mg/L
Sulphate 0 to 70 mg/L
Sulphide (soluble) 0 to 3 mg/L
Zinc 0 to 3 mg/L


Page reviewed: 18th December 2017