palintest Green Drop Kit Instructions Manual page 8

4.1.3 Taking Photometer Readings
The photometer is very simple to use. Screen
prompts guide the user towards the test result. The
following sections describe how to get the best out
of the system.
4.1.4 Program Numbers and Test
Instructions
Each test is identified by a separate program
number or named key. Program numbers are
shown in Palintest photometer methods
instructions.
For some tests, a choice of different programs is
offered in order to give the option of the result in
different forms (eg for Nitrate - NO or Nitrate
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Nitrogen - NO -N).
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In certain methods, the test can be continued to a
further stage - for example in the tests free chlorine
and total chlorine. This is allowed for in the
programming of the photometer. In these tests,
once the first stage result is obtained, the 'Follow-
On' option may be selected to progress the test to
the next program stage or stages. The result will
be calculated automatically.