Maintenance; Clean The Instrument - Hach Pocket Colorimeter II Basic User Manual

Maintenance

Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
Do not disassemble the instrument for maintenance. If the internal components
must be cleaned or repaired, contact the manufacturer.

Clean the instrument

Clean the exterior of the instrument with a moist cloth and a mild soap
solution and then wipe the instrument dry.
Clean the sample cells
Chemical exposure hazard. Obey laboratory safety procedures and
wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.
Most laboratory detergents are used at recommended concentrations.
Neutral detergents, such as Liquinox, are safer to use when regular
cleaning is necessary. To decrease the cleaning times, increase the
temperature or use an ultrasonic bath. To complete the cleaning, rinse
a few times with deionized water and then let the sample cell air dry.
Sample cells may also be cleaned with acid, followed by a thorough
rinse with deionized water.
Note: Always use acid to clean sample cells that were used for low-level metal
tests.
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