Bamo Pooltest 3 Instruction Manual - page 3
msa190-10
2010-12
page 3
Blanks and Samples
Palintest photometers use a BLANK tube to set the instrument to blank and a SAMPLE tube to take the reading.
A BLANK tube is a test tube filled with untreated water sample. A SAMPLE tube is a test tube containing the sample to which reagents have been
added in accordance with the test procedure described.
The blank setting is held in memory. It is not necessary to reset the blank each time a reading is taken if the water samples to be tested are from the
same body of water and the conditions of use are the same. The blank setting can be confirmed if necessary by taking a test reading on the blank tube.
Taking a Reading
1 Press the ‘on/off’ button to start the u nit.
2 Press the ‘menu’ button until the test you wish to perform is indicated on the screen.
3 Insert your blank tube and press the ‘blank sample’ button.
4 An image displaying a blank tube will be displayed on screen.
When this is replaced by 0.00 the instrument is finished blanking and ready to take a reading.
5 Remove your blank tube and replace it with the sample tube.
Press the ‘Read Sample’ button to take a reading.
6 The result will be displayed on screen in mg/L.
Care and Maintenance
The handling of photometer tubes is important to ensure continuing accuracy. Scratches, finger-prints and water droplets on the tube or
inside the light chamber can cause inaccurate results. It is imperative that the tubes and light chamber are cl ean and dry. The glassware
must be clean and defect-free. Scratches and abrasions will permanently affect the accuracy of the readings. Tubes can be acid washed
periodically.
Here are some hints on keeping the photometer clean, free from contamin ation and in good working order:
1 Prepare your workplace before use.
Make sure that you have enough space to work with the photometer and with the reagent systems.
2 Do not pour out samples or prepare the tests directly over the instrument.
3 Always cap the test tubes after preparing the blank and test sample.
4 Wipe test tubes on a clean tissue to remove drips or condensation before placing in the photometer.
5 Do not leave tubes standing in the photometer test chamber.
Remove the tubes immediately after each test.
6 Immediately wipe up any drips or spillages onto the instrument or into the test chamber with a clean tissue.
7 Keep the instrument clean.
Clean the test chamber regularly using a moistened tissue or cotton bud.
8 Keep the instrument in a clean, dry place when it is not in use.
Keep it on a clean, dry bench away from chemicals, place it in a storage cupboard or keep it in a carrying case.
Viewing the Instrument Memory
To view the previous results (10 results are stored within the instrument memory); hold the ‘menu’ button whilst the display showing the selected test or
result is on the screen.
Backlight Operation
The backlight can be turned on and off by holding the ‘On/Off’ button for a two second period during power on.