-
Step 1
Read the instruction manual. Each photometer is different, and each may have a slightly different procedure for accurate operation. The general approach to using a photometer is largely the same regardless of the particular device, but you should still consult your manual to ensure that you use it correctly.
-
Step 2
Get the necessary reagents for testing the pool water. Using a photometer requires more than just adding water (from the pool), so be sure you have the appropriate chemicals for the types of tests you'll be running.
-
Step 3
Add the appropriate amounts of pool water and reagents to the test tube, as directed by the user manual or chemical instructions. It's important that you follow the instructions carefully and that you take necessary precautions for dealing with the chemicals.
-
Step 4
Place the test tube containing the water and reagents in the photometer. The photometer should have a properly sized port in a conspicuous location, so you shouldn't have any trouble finding it.
-
Step 5
Turn on the photometer. Depending on the model, you may have to select some options using a keypad or other input. Simple single-parameter photometers, on the other hand, may give you an immediate reading as soon as you activate them.
-
Step 6
Select any appropriate parameters if necessary. If you have a photometer that allows testing of several different water characteristics, then you need to select the appropriate characteristic you want to test. You may also need to choose the units of the measurement.
-
Step 7
Look at the reading on the photometer. If you're not sure about what a particular reading means, consult your user manual.
