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    Chematest – Reliable Water Testing for Swimming Pools and Water Treatment

    Maintaining the right water quality in swimming pools and water treatment systems requires accurate and reliable testing.

    The SWAN Chematest range provides portable photometric instruments for manual water analysis, allowing you to quickly measure key parameters such as chlorine, pH, and alkalinity.

    Designed for daily operation, Chematest instruments are widely used in public swimming pools, water treatment facilities, and industrial applications, where consistent water quality is essential.

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    Accurate manual water analysis for daily operation

    Chematest instruments use photometric measurement based on reagent tablets or liquids, providing reliable and repeatable results.

    The measurement process is simple:

    1. A water sample is collected
    2. A reagent is added
    3. The instrument measures the color change
    4. The concentration is displayed directly

    This allows operators to perform fast and accurate on-site testing without the need for complex laboratory equipment.

    SWAN Chematest Series 30, 35 and 42

    Designed for swimming pools and public water facilities

    The Chematest range is widely used in swimming pools and public water systems, where regular manual testing is required.

    Typical parameters include:

    • Free chlorine
    • Total chlorine
    • pH
    • Alkalinity
    • Cyanuric acid
    • Other water quality parameters depending on configuration

    Reliable testing ensures that water quality remains safe, compliant, and comfortable for users.

    SWAN Chematest – Product Comparison

    The Chematest 30, 35, and 42 may appear similar at first glance. In practice, they are designed for different needs.

    This overview highlights the key differences, so you can choose the right instrument for your daily water analysis.

    Chematest 30 – For straightforward routine measurements

    The Chematest 30 is the most straightforward model in the range. It is designed for routine testing of key water quality parameters, where simplicity and speed are important.

    pH is measured photometrically using Phenol Red (range 6.5–8), and the instrument does not support external electrodes.

    • Photometric pH with Phenol Red (6.5–8)
    • Free, combined and total chlorine, chlorine dioxide, ozone, bromine, iodine (DPD method)
    • Cyanuric acid
    • No external electrode connection
    • No turbidity measurement

    In practice, this makes the Chematest 30 a good fit for standard daily control where the parameter set is fixed.

    SWAN Chematest 30
    Get to know Chematest 30

    Chematest 35 – More flexibility in daily operation

    The Chematest 35 builds on the functionality of the Chematest 30 and adds flexibility through external sensor connections.

    It is supplied with a pH electrode including an integrated temperature sensor (range 1–13), allowing you to move beyond photometric pH measurement when needed.

    • Photometric pH with Phenol Red (6.5–8)
    • Free, combined and total chlorine, chlorine dioxide, ozone, bromine, iodine (DPD method)
    • External electrode connection
    • Included: pH electrode with integrated temperature sensor (range 1–13)
    • Optional: Redox (ORP) electrode
    • Optional: Conductivity sensor
    • No turbidity measurement

    This allows you to adapt the instrument to your workflow and measure additional parameters as your requirements develop.

    SWAN Chematest 35
    Get to know Chematest 35

    Chematest 42 – Extended measurement capability including turbidity

    The Chematest 42 includes the same functionality as the Chematest 35 and adds turbidity measurement via a dual photometer.

    Turbidity measurement is compliant with DIN ISO 7027-1 and US EPA 180.1, with a range of 0–1000 FNU/NTU.

    • Photometric pH with Phenol Red (6.5–8)
    • Free, combined and total chlorine, chlorine dioxide, ozone, bromine, iodine (DPD method)
    • External electrode connection
    • Included: pH electrode with integrated temperature sensor (range 1–13)
    • Optional: Redox (ORP) electrode
    • Optional: Conductivity sensor
    • Turbidity: 0–1000 FNU/NTU via dual photometer (ISO 7027-1 / EPA 180.1)

    This makes the Chematest 42 relevant when you need a broader measurement scope within one instrument, including turbidity.

    .

    Why “42”?

    The Chematest 42 takes its name from the well-known reference in The Hitchhiker’s Guide to the Galaxy, where 42 is described as the answer to “life, the universe, and everything”.

    In this context, the reference reflects that the instrument combines multiple key water quality parameters in one solution, including turbidity.

    SWAN Chematest 42
    Get to know Chematest 42
    Feature Chematest 30 Chematest 35 Chematest 42
    Photometric pH (Phenol Red, 6.5–8) Included Included Included
    Chlorine, ClO₂, ozone, bromine, iodine Included Included Included
    Cyanuric acid Included Included Included
    External electrode connection – Included Included
    pH electrode incl. temperature (1–13) – Standard Standard
    Redox / ORP electrode – Optional Optional
    Conductivity sensor – Optional Optional
    Turbidity (dual photometer, 0–1000 FNU/NTU) – – Included

    Included Standard feature   Standard Supplied accessory   Optional Available option

    Features shared by all Chematest models
    IP67 dust and waterproof design
    Rechargeable Li-ion battery
    DPD reagent method (SWAN Oxycon reagents)
    Menu-guided operation – no manual required in the field
    Individual factory calibration per unit
    Memory for 2,700+ data sets
    Protective carrying case with accessories included

    See how Chematest works in practice

    Key features across the Chematest range

    • Portable instruments for on-site water analysis
    • Accurate photometric measurement technology
    • Easy operation for daily use
    • Fast test results
    • Robust design for field environments
    • Suitable for swimming pools and water treatment applications

    These features make Chematest a practical solution for routine water quality control.

    Benefits for your operation

    With Chematest you gain:

    • Reliable manual verification of water quality
    • Fast and easy daily testing
    • Improved control of chlorine and pH levels
    • Support for regulatory compliance
    • Increased confidence in water quality

    These benefits help ensure safe and well-controlled operation of swimming pools and water systems.

    Water testing solutions from Norsk Analyse

    Norsk Analyse supplies SWAN Chematest instruments for swimming pools, water treatment systems, and industrial applications across Scandinavia.

    Our specialists support you with:

    • selecting the right instrument
    • training and implementation
    • supply of reagents and accessories
    • service and support

    This ensures reliable water testing and consistent water quality control.

    These products are included in the Chematest portfolio

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