Method Of Cleaning - VWR 97043-930 Instruction Manual

Method of Cleaning

Ultrasonic sound is sound transmitted at frequencies generally beyond the range of
human hearing. In your ultrasonic cleaner, ultrasonic sound (sonics) is used for
cleaning materials and parts.
Direct cleaning (refer to figure 1)
Place water and detergent in the cleaning trough, then place work piece on the
support rack, Lower them into the trough or suspend the work piece then lower them
into the liquid.
Indirect cleaning (refer to figure 2)
Place water and detergent into the cleaning trough, and put all the chemicals into a
beaker or other suitable container and then put the work piece into the liquid. Now put
the container of the chemical detergent and work piece into the trough.
Caution: do not let the container touch the bottom of the trough.
The direct and indirect cleaning methods both have advantages and disadvantages. If
you are not sure which one to choose please carry out tests first before making a
choice. The advantage of the direct cleaning method is that the cleaning is very
efficient and easy to operate. The indirect cleaning also has advantages, which are
that the dirt being cleaned off can be clearly seen in the beaker or the container, and
then it can be filtered out or disposed of. Also at the same time we can use two or
more than two types of cleaning solvents.
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