PROPER PRECAUTIONS MUST BE TAKEN DURING
HANDLING OF ACIDS.
STEPS ON CLEANING
1. The electric supply to the still is switched off and the water in the
Glass Boiler (Part No. 2) is allowed to cool.
2. The cooling water supply is turned off.
3. The Teflon drain cock is the Glass Boiler (Part No. 2) is opened and
the water in the Glass Boiler (Part No. 2) is completely drained off.
The drain cock is the closed.
4. Through the funnel of the Glass Boiler (Part No. 2) inlet tube fill dilute
10% formic acid solution till the operating level is reached. Excess
acid should be avoided.
5. The acid is allowed to react and break down the scale deposits. The
time taken depends on the severity of scale build up.
Important : Safety precautions have to be observed since the liquid
flowing to the drain may be acidic as it may not be completely
neutralized.
6. The drain cock in the Glass Boiler (Part No. 2) is closed and the Glass
Boiler (Part No.2) is filled with cold water and allowed to drain out.
This procedure is repeated two or three times.
7. The still can be restarted when the Glass Boiler (Part No. 2) is filled
with water. The still should be allowed to run for around 10 minutes
before collecting the distillate.
REGULAR CLEANING WILL KEEP YOUR STILL RUNNING AT
OPTIMUM CONDITION.
-7-
© EISCO SCIENTIFIC ● www.eiscolabs.com
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