The Chematest 42 is a rugged, waterproof handheld photometer with Bluetooth for precise chlorine, turbidity and other water-quality measurements in the field and on site.
This multiparameter analyser measures turbidity in accordance with DIN ISO 7027-1. Registration as an alternative test procedure to US EPA 180.1 is pending. Each device is individually factory-calibrated for low-range turbidity measurements from 0.01 FNU/NTU, with a fixed cuvette position and smart cuvette offset management supporting consistent, repeatable results.
A sealed sample chamber and optimised optical system help ensure dependable readings in demanding field environments. Designed for potable water, swimming pools, industrial systems and distribution networks, the Chematest 42 offers intuitive operation, long battery life and instrument validation using VeriKit.
Specifications
- Turbidity measurement in accordance with DIN ISO 7027-1. Registration as an alternative test procedure to US EPA 180.1 is pending.
- Supports digital sensors for pH, redox potential (ORP) and specific conductivity measurement. Sensors are sold separately.
- Smart cuvette offset management supports reliable low-range turbidity measurement.
- Removable cuvette holder makes routine measurements easier and saves time.
- Rechargeable lithium-ion battery enables portable, standalone operation.
- Supplied in a rugged carrying case with cuvettes, accessories and a USB charging cable.
Chematest 42 Specifications
Parameters
| Photometry | Disinfectants: free, total and combined chlorine, chlorine dioxide, ozone, bromine and iodine using the DPD method Cyanuric acid pH: photometric measurement with phenol red |
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| Nephelometry | Turbidity measurement in accordance with ISO 7027-1 US EPA 180.1 alternative test procedure: registration pending in accordance with 40 CFR 136.4 |
| Sensor-based measurements | Digital sensors are available for pH, redox potential (ORP) and specific conductivity. Sensors are sold separately. |
Calibration and verification
| Factory calibration | Each instrument is individually factory-calibrated. |
|---|---|
| Low-range turbidity | Turbidity measurement from 0.01 FNU/NTU, supported by a fixed cuvette position and smart cuvette offset management. |
| Verification | Photometric verification using certified reference cuvettes and turbidity verification using certified sealed standards. |
User-friendly operation
| Documentation | Configurable user and sample ID lists allow measurements to be associated with individual users and sampling locations. |
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| Guidance | Photometric measurements offer a choice of detailed on-screen instructions or expert mode with shortened instructions and fewer confirmations. |
| Favourites | A favourites list provides quick access to three methods, with a choice of recently used methods or fixed entries. |
Connectivity and data storage
| App | CT App for data download, instrument configuration and firmware updates via Bluetooth. |
|---|---|
| Battery | USB-rechargeable lithium-ion battery providing approximately 5,000 measurements per charge. |
| Memory | Stores up to 2,700 measurements. When the memory is full, the oldest measurement is overwritten by the newest result. |
What’s included
| In the case | Chematest 42 instrument Carrying case 4 photometry cuvettes 1 turbidity cuvette 2 cuvette adapters 100 mL beaker 20 mL syringe 8 syringe filters for preparing particle-free water 2 blister packs for reagent bottles Sensor storage container USB charging cable Cuvette cleaning brush Wet wipes Microfibre cleaning cloth |
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Digital sensors are sold separately.



Contact Swan Analytical New Zealand for more information and a quote.
Downloads
| Brochure | Product Flyer |
| Manual | Manual |
| Datasheet | Datasheet |
