Better sampling, testing and interpretation
Practical guides for selecting test ranges, collecting samples, using field kits and deciding when laboratory confirmation is required.
How to Use a Portable Water Test Kit
A reliable result depends on representative sampling, clean apparatus, correct reagent sequence, timing and disciplined recording.
TESTING GUIDEHow to Choose the Right Water Test Range
A kit should cover the expected concentration while still providing useful resolution around the control limit.
TESTING GUIDEField Testing vs Laboratory Analysis
Field kits provide fast operating information, while laboratories provide broader capability, traceability and confirmatory analysis.
TESTING GUIDEWater Sampling Best Practices
Sampling errors can be larger than the analytical error, so consistent collection is essential.
Improve repeatability before comparing results.
Field tests become more useful when every operator follows the same sampling, timing, endpoint and recording process.
Use clean equipment
Rinse tubes and measuring devices with the sample where appropriate, avoid detergent residue and keep reagent droppers from touching the sample.
Respect reaction time
Read colour reactions and titration endpoints within the period stated in the instructions. Delayed readings may not represent the intended method.
Record all context
Include the sampling point, operating condition, test range, dilution, date and operator so that future results can be compared meaningfully.