Description: Scientific apparatus for use in water treatment, namely, water filter controllers, water purifier controllers, water purity analyzers, water meters, water flow meters; scientific apparatus for use in water filtration, purification, softening, sterilisation, sanitation, sanitisation, desalination, demineralisation, deionisation, electrodeionisation, oxidation and clarification, namely, water purifier controllers | Apparatus and instruments for [ surgical, ] medical, dental and veterinary use for the filtration, purification, softening, sterilisation, sanitation, sanitisation, desalination, demineralisation, deionisation, electrodeionisation, oxidation and clarification of water | Water treatment apparatus, namely, water purification and filtration apparatus, water purification installations, water purification machines, water purification tanks, water purification units, and water purifiers; water treatment units; water treatment filters; water treatment cartridges; apparatus, instruments and installations for filtration, purification, softening, sterilisation, sanitation, sanitisation, desalination, demineralisation, deionisation, electrodeionisation, oxidation and clarification of water; water treatment cartridges for the filtration, purification, softening, sterilisation, sanitation, sanitisation, desalination, [ mineralisation ] * demineralisation *, deionisation, electrodeionisation, oxidation and clarification of water