Remove The Front Panel In Order To Regulate The Pump - Mareva Premium pH Handbuch

9.0 Remove the front panel in order to regulate the pump

9.1 Selection of the chemical product
pH+ product (basic)
Rotate the lower knob clockwise. The left hand side led became red.
pH- product (acid)
Rotate the lower knob anticlockwise. The left hand side led became green.
9.2 Ph regulation
1° Dip the electrode into a tap water glass
2° Dip the electrode into the pH 7,3 buffer solution and shake for few seconds
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