VWR 97043-930, Инструкция по эксплуатации

Страница: 8 / 28

Cleaning Solutions
WARNING
Do not use corrosive solutions, such as bleaches, strong acids or powerful caustics, in
ultrasonic tanks, or you will void the warranty. Only use non-flammable solutions and
water-based solutions.
Solution types:
Water-based solutions are either slightly acidic or alkaline. They include detergents,
soaps and industrial cleaners designed to remove specific contaminates.
Acidic water-based solutions:
Remove rust, tarnish or scale. They range from mild solutions that remove tarnish, to
concentrated, inhibited acidic solutions that remove investment plaster, milk-stone,
zinc oxide and rust from steel and cast iron as well as smut and heat-treat scale from
hardened steel.
Alkaline water-based solutions:
Include carbonates, silicates and caustics. These cause emulsifying action, which
keeps contaminate from redepositing on the cleaned surface, and improves cleaning
action in hard water.
Change the cleaning solution periodically. Cleaning solutions can become
contaminated with suspended contaminate particles which coat the tank bottom. This
coating dampens the ultrasonic action and reduces cleaning efficiency. Certain
solutions will cavitate better than others. Contact VWR for further information.
Heat and cavitation: increase the chemical activity of cleaning solutions. Some
materials may be damaged by this stronger chemical action. When in doubt, test run
samples of items to be cleaned.
Caustic solutions: used to remove rust from steels, metal alloy corrosion and a
variety of tenacious contaminates.
Solution amounts: solution amounts may vary. The amount you use depends on the
detergent and the type of contaminate to be removed. Follow instructions on the
solution container and refer to the table below for the effects of solutions on metals.
Alkaline strength: Removes:
Mild
Light oils and greases, cutting oils and coolant compounds.
Mild to strong Heavy grease and oil, waxes, vegetable oils, inks, wax or
fat-base buffing and polishing compounds, milk residues
and carbohydrates.
Heavy-duty Mill scale, heat-treat scale, corrosion or oxides.
！
6