For a quick simple and reliable analysis without the need for appliances. The tablet count method is based on a specific number of reagent tablets, on the water volume added or on the liquid level. This is an ingenious use of two concentric tubes to assess the concentration by the clarity or turbidity of the solution. Reagents (tablets) are presented in convenient blister packs, with a shelf life of not less than five years. The Minikit provides all the elements needed to perform the test. The references for 100/250 additional tablet packs are shown in the table.