Stelzner Set of test sticks To measure nitrate concentration, pH and water hardness. 3 packs each with 6 test sticks.
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Stelzner pH test sticks Measure the pH of drinking water and of the groundwater in your garden.
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Stelzner Nitrate test sticks Checking for the accumulation of nitrate/nitrogen in the drinking or ground water
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Stelzner Water hardness test sticks For measuring the hardness of water for the garden or washing up.
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Stelzner Oil test sticks Quick detection of oils, petrol and hydrocarbons in water and on the ground
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