Hanna pH Liquid 7.0 & 4.0 Testers Superfish Zeolite can be used

Superfish Zeolite can be used loose or contained within a filter bag

It causes damage and irritation to the gills with resultant thickening and loss of full function

simply dip the sensor into the water and read the result

Filter chamber with activated carbon

Use 10ml per 182 litres (40 gallons)

Hanna pH Liquid 7.0 & 4.0 Testers Superfish Zeolite can be usedThe pH 4. 01 & 7. 01 buffer solutions in quick and easy to use 20ml sachets are the most popular buffers used before analysing samples. Ideal for those requiring an accurate acid or neutral reading. The single dose sachets are really handy with each sealed sachet holding just the right amount of solution. Each time a meter or electrode is calibrated using the Hanna sachets, it is like using a newly opened bottle of solution. 5 x 20ml sachets of pH 4.