Max - Portable Chlorine and pH Meter
Portable Max-line meter for residual chlorine and pH by colorimetry, with GLP, USB data logging and IP65 housing for field and lab use.
Measuring chlorine in water is an essential process to ensure the safety and quality of several processes, especially in drinking water treatment, swimming pool treatment, and industrial processes. Chlorine is a disinfectant widely used to eliminate pathogenic microorganisms and keep water safe for human consumption and use. However, inadequate chlorine levels can be harmful, and accurate measurement of residual chlorine is crucial to ensure levels are within acceptable limits for public health and quality standards.
Developed and manufactured by Akso, the meters of the Max line are portable, ideal for those looking for practical measurements. In addition to having a modern design and display with adjustable backlight, the Max line meters have date, time and internal memory to record measurements, with the possibility of uploading data to the computer via USB connection, offering agility and safety in the analysis process.
It has a GLP (good laboratory practice) function, allowing you to check the date the product was calibrated, the standards used and the calibration expiration date (optional). It also has quick and easy user firmware updates, guaranteeing the longevity of your product. The Max line meters allow you to select a user and sample ID, and to select among 4 language options (English, Spanish, Italian and Portuguese) making them extremely versatile and easy to understand. The Maxmeters are powered via a 3.7V battery rechargeable and Always On Display mode, making them ideal for use in the field and in the laboratory.


Applications
| Measurement Specifications | |||
| Parameter | Range | Resolution | Accuracy |
|---|---|---|---|
| Chlorine | 0.00 to 5.00 ppm | 0.01 ppm | ± 0.03ppm + 3% reading |
| pH | 6.5 to 8.0 pH | 0.1 pH | ± 0.2 pH |
| General Specifications | |
| Light source | LED |
| Wavelength | 525 nm |
| Measuring cell | Glass cuvette |
| Languages | Portuguese, English, Spanish, Italian |
| Memory | 2,000 record groups |
| Power supply | 3.7 VDC (rechargeable battery) |
| Communication | USB (power and PC communication); AC/DC adapter 5 Vdc–2 A |
| Operating temperature | 0 to 50 °C |
| Operating humidity | 10 to 90 % RH (non-condensing) |
| Dimensions | 95 × 80 × 190 mm |
| Weight | 300 g (with battery) |
| Measurement method | Colorimetric — Standard Method 4500-Cl G / US EPA / DIN / ISO 7393-2 |
| Calibration points | Chlorine: 6 points (0, 0.5, 1.0, 2.0, 3.0, 4.0 ppm) · pH: 4 points (6.5, 7.0, 7.5, 8.0) plus blank |
Replacement parts, calibration solutions, and maintenance supplies for the AK400.
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