YSI 9500 Photometer - Manual

________________________________________________________________________
9500 PHOTOMETER
The YSI 9500 direct-reading photometer is designed to give long and trouble-
free operation. To ensure the best results, please read these instructions
carefully and follow the procedures recommended.
The photometer is suitable for use in both the laboratory and the field. It is
rugged and durable but should be regarded as a scientific instrument. It is
designed to resist moisture and spills but care must be taken to maintain the
life of the instrument.
Keeping the photometer clean, free from contamination and in good working
order :-
1 Do not pour out samples or prepare the tests directly over the instrument.
2 Always cap the test tubes after preparing the blank and test sample.
3 Wipe test tubes with a clean tissue to remove drips or condensation
before placing in the photometer.
4 Do not leave tubes standing in the photometer test chamber. Remove
the tubes immediately after each test.
5 Immediately wipe up any drips or spills on the instrument or in the test
chamber with a clean tissue.
6 Keep the instrument clean. Clean the test chamber regularly using a
moistened tissue or cotton ball.
7 Keep the instrument away from all chemicals and cleaning materials.
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.
9 Keep the carrying case in a clean, dry condition. Make sure that the
carrying case is dry before the case is closed up and the instrument is put
away.
1