Hanna pH Liquid 7.0 & 4.0 Testers simply dip the sensor into

simply dip the sensor into the water and read the result

Filter chamber with activated carbon

this will assist in reducing the mucus membrane where body flukes can sometimes get trapped

this device automatically switches off the pump

15g per 1000 gallons (4564 Litres) of pond water

Hanna pH Liquid 7.0 & 4.0 Testers simply dip the sensor intoThe 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.