Water-i.d.® FlexiTester provides you with access to semiprofessional water analysis. While FlexiTesters are -like Pooltesters- visual measurement devices, the arrangement of the measured colour to the scale – and the determination of the measurement value – is much more precise with FlexiTesters because the measurement is compared to an ongoing colourscale on a parameter-stick. There are no measurement results “between” individual colour scales. Ergonomic design and high quality materials also simplify measurements. So far, 37 different parameter-methods can be tested with the same basic model. Just a different paramter-stick and reagents are needed to extend your FlexiTester kit.