The apparatus is supplied with typical commercial cation and anion resins. Other ion exchange materials may be used so that their characteristics, exchange capacity etc, may be measured and compared. A conductivity meter connected to the outlet of the second ion exchange bed gives a continuous indication of the progress of demineralisation. Regenerant and test or wash solutions contained in separate sumps are selected by a traversing tube and delivered to the apparatus by pump through a control valve and flow meter. Effluent may be fed to a sump tank and treated water collected in bottles for tests on hardnes, conductivity or dissolved solids.

Technical Details:-

•  Flowmeter range: 10-80ml/min.

•  Sump tank capacity: 20 litres.

•  Pump: Self priming diaphragm type.

•  Anion exchange resin: 0.75 litre.

•  Cation exchange resin: 1litre.