10
Care and Maintenance
The handling of the colorimeter cuvettes is important to
ensure continuing accuracy. Scratches, finger-prints and
water droplets on the cuvette or inside the light chamber
can cause inaccurate results. It is imperative that the
cuvettes and light chamber are clean and dry. The
glassware must be clean and defect-free. Scratches and
abrasions will permanently affect the accuracy of the
readings. Cuvettes can be acid washed periodically.
Here are some hints on keeping the photometer clean,
free from contamination 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 cuvettes after preparing the
blank and test sample.
4
Wipe test cuvettes on a clean tissue to remove drips
or condensation before placing in the photometer.
5
Do not leave cuvettes standing in the photometer test
chamber. Remove the cuvettes 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.
Summary of Contents for Ammonia Duo
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