Cleaning Solutions - VWR 97043-930 Instruction Manual

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Table Of Contents

Table of Contents

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.

Alkaline strength:

Mild

Mild to strong

Heavy-duty

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.