Comparator tests use visual standards to assess the colour produced when   reagents are added to a sample of water. Tablet reagents are used with these   kits for maximum simplicity and convenience.
                            
The Palintest Comparator with   interchangeable colour discs is so simple to use - just add the tablet reagent   to the test sample, place in the comparator and match against the appropriate   disc. Colour discs are available for a complete range of water test   parameters.
Palintest discs are produced by the latest technology which   enables the colours to be printed from a palette of over two million different   shades - ensuring a perfect match against the colours product in each test. The   long-lasting, wipe-clean polyacrylate discs conform to international dimensions   and can be used in most standard comparators.
Palintest colour discs are   manufactured using colourfast inks and light resistant materials. There should   be no loss of colour integrity of the standards with time.
In a series of   trials in which colour standards were subjected to continuous ultra-violet light   for a period of one month, and to natural unshaded daylight for a period of one   year, no loss of colour was observed. 
Users can confidently expect Palintest   colour discs to give many years of satisfactory service under the recommended   conditions of use and storage.
                          The Palintest comparator and discs are   available in complete test kit form or separately for use with existing   equipment.
                            
                            It is easy to choose a water test kit to suit your application -   whether it is just for one test parameter or for a dozen!