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If you want to prolong the life of laboratory utensils
made of stainless steel then it is necessary to take proper care of them.
The following points given below give some useful hints in caring for
stainless steel laboratory utensils.
Using Proper Tools : While cleaning stainless steel products,
it is better to use non-abrasive tools. Soft cloths and plastic scouring
pads if used does not cause any damage to the steel’s passive
layer. Using stainless steel pads is also a good option but the
scrubbing motion must be directed towards the polishing marks.
Cleaning Along the Polish Lines : Often some types of
stainless steel lab products come with polishing lines or “grain”which
are visible. If visible lines are seen then scrubbing should be done in
a motion which is parallel to them. In case grains are not seen a soft
cloth or plastic scouring pad can be used.
Use of Appropriate Cleaners : For stainless steelware
Alkaline, Alkaline Chlorinated, or Non-Chloride cleaners works best at
recommended strength. These days along with traditional chloride
cleaners there is also available non-chloride cleaners. Cleaners with
quaternary salts are to be avoided as they are known to attack stainless
steel and result in pitting and rusting. Hydrochloric acid (muriatic
acid) are never to be used on stainless steel.
Frequent Cleaning : There is nothing like frequent cleaning
of stainless steel labware. This is the best way to avoid and check
build-up of hard and stubborn stains. While using chlorinated cleaners
there is need to rinse thoroughly. Afterwards it should be immediately
wiped dry for removing any traces of chlorination. Wiping should be
followed by air drying as oxygen facilitates to maintain the the
passivity film of stainless steel.
Water Treatment : If the water is soft, the deposit build up
on the stainless steel products can be reduced to a large extent.
Filters if installed, can eliminate distasteful and corrosive elements.
