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 | ± 0.03 ppm + 3% reading |
| pH | 6.5 to 8.0 pH | 0.1 pH | ± 0.2 pH |
| General Specifications | |
| Operating temperature | 0 to 50 °C |
| Calibration points | Chlorine: 0, 0.5, 1.0, 2.0, 3.0, 4.0 ppm |
| Calibration points | pH: 6.5, 7.0, 7.5, 8.0 pH |
| Wavelength | 525 nm |
| Light source | Light Emitting Diodo (LED) |
| Memory | 2000 records | user ID (9 options) | sample ID (8 options) |
| Display backlight | Adjustable backlight |
| Languages | English | Spanish | Italian | Portuguese |
| Measuring cell | Glass Cuvette with lid (Ø24.9 mm) |
| Sample volume | 15 mL |
| Protection rating | IP65 |
| Operating humidity | 10 to 90 % RH (non-condensing) |
| Power supply | Rechargeable 3.7 VDC battery | Charging via AC/DC and adapter 5 VDC - 2 A output |
| Communication | USB-C, for data transfer and battery charging |
| Dimensions | 95 x 80 x 190 mm |
| Weight | 300 g |
| Measurement method | Colorimetric method for free and total chlorine determination, adapted from US EPA 330.5 and the SMWW Standard Method 4500-Cl G. Methods compliant with US EPA, DIN, and ISO references for free and total chlorine determination (US EPA 330.5, DIN Standard, and ISO 7393-2). Colorimetric method using phenol red for pH determination. |
Replacement parts, calibration solutions, and maintenance supplies for the AK400.
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