Thermo Scientific 180 Series, Руководство по эксплуатации и техническому обслуживанию

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GP Water Baths 6-3 Thermo Scientific
Section 6
Maintenance
NEVER USE THE FOLLOWING:
Aqua Regia Ferric Chloride Iodine
Sodium Azide Sulfuric Acid
Spills of any chemical, especially those listed above should be removed as
soon as possible and the stainless steel surface cleaned with mild soapy
water followed by copious rinse with clean water. Do not use soap filled or
metallic pads. Even stainless steel pads are to be avoided as they may
destroy the passive film on the surface of the metal and create crevices that
may harbor contamination. If stubborn stains persist, use a plastic light
duty cleansing pad and rub gently in the direction of the metal grain. If
stains continue to persist, use one of the following methods.
Warning The following chemical methods have proven successful but
extreme care must be taken when handling these materials. Always work in
an area with adequate ventilation. Use the precautions outlined in the
Material Safety Data Sheet (MSDS) and manufacturer's instructions for
the product you are working with. Follow the personal protection index
found in the Hazardous Materials Identification System (HMIS) section of
the MSDS.
s
The use and disposal of these chemicals may be regulated by your local
municipality. Consult the regulations before disposing of these materials.
1. Bathroom tub and tile cleaners. Available at supermarkets.
2. Any of a variety of "scale removers" available at your local supermarket
or hardware store. Generally sold for cleaning coffee makers,
humidifiers and vaporizers.
3. Citric acid based cleaners. Contact your lab supply dealer.
4. A 15 to 35% phosphoric acid solution. Available from chemical supply
dealers for scale and rust removal. Allow solution to soak the surface
affected until rust and scale is loosened. Immediately rinse with
copious amounts of clean water.
5. Oxalic Acid 2% to 5% in warm water. Swab solution on surface
allowing it to remain until rust is loosened. Immediately flush with
copious amounts of clean water.
6. A mixture of 20% nitric acid and 1.5% hydrofluoric acid (or
hydrochloric acid). Swab solution on surface allowing it to remain
until rust is loosened. Immediately flush with copious amounts of
clean water.
Cleaning
Other Water Additives
(cont.)