Quote:
Originally Posted by Mohammed
Hi,
Have the sachet cut open and ready to go as most said. Open your stop watch on your phone and switch on the unit. Add C1 appears. Place vial with the 10ml facing you and start the stopwatch as soon as C2 appears. Remove vial and add contents of sachet. Gently tilt the vial to mix the powder and once 1min 50 sec is reached on your stopwatch, long press the button on the unit to start a 3 minute count down. I usually mix for another 20 sec and then return the vial to the unit with the 10ml mark facing me. Now just wait for the countdown and your phos reading will appear in ppb if u habe the ulr checker. Multiply the amount to 3.066 and divide by 1000 to gt ppm.
HTH
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Exactly how I do it, I invert and swirl until the timer reaches 20 sec and then just give the vial a gentle tap on the bottom to dislodge any bubbles and wipe it down before putting it in the tester (10ml facing me).