Pooltest 9 Photometer

Photometers should be regularly cleaned to ensure that your instrument is reading correctly and is not affected by dust or water marks.

To clean a compact photometer, place a small amount of anti- static cleaning foam on to a lint free cloth and wipe the instrument.

For multiparameter photometers, you should clean several parts of your instrument. To clean, place a small amount of anti- static cleaning foam on to a lint free cloth and wipe the instrument.

1. Sample holder.
   The first image shows the surface around the sample holder, all visible marks on this area should be removed
2. Outside optics base plate.
   Turn the instrument over and undo the two screws on the base of the instrument, as demonstrated in the second image. Gently wipe the curved areas near the LEDs and the flat area on the opposite side.
3. Inside optics base plate
   Contamination on the inside of the base plate can migrate onto your calibration tubes leading to scratches which damage the standards. If marks cannot be removed from the base plate, a new base plate should be fitted.
   When refitting or replacing a base plate, you must ensure screws are tightened so that the standards are set are the correct height. Failure to do so can lead to compromised results.
   

Check standards allow you to confirm that your instrument is reading results correctly.

The recalibration process is a highly technical process which is carefully controlled. To recalibrate your instrument, it must be returned to Palintest. Contact your Palintest representative for more information.

Monopersulfate can react with the DPD total chlorine test causing a false high total test, and thus, a false combined chlorine reading. The DPD Oxystop tablet eliminates this interference allowing an accurate measurement of total chlorine. This should be used prior to the DPD #3 tablet. The DPD Oxystop tablet may also be used in exactly the same manner with the DPD XT tablets.