[Jewelry making - Article 00857] - Re: [Orchid] Checking for gas leaks with soapy water?

[jesse Brennan]

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    Gas suppliers used to use a thin ivory soap solution for leak
    detecting on cylinders. Later they switched to a thin solution of a
    foaming dishwashing detergent ( JOY). This can be easily used from
    spray bottle or with a soft brush. Some may use a purchased leak
    detecting solution, but this is really the same thing minus the dye
    color and the scent. A little Dawn or Joy in water is fine! As thin
    as will still blow bubbles is fine. You are in no danger if you are
    prudent. In the old days well into the 60's, and later in a few
    places, oxygen was compressed in soap water lubricated compressors.
    If the machines were kept clean internally of dried soap residues
    there were no problems. Ivory flakes were a soap of choice.!! Later
    and today oxygen for distribution and cylinder filling was handled as
    a liquid and pumped in non lubricated pumps at very low ( - 300 F)
    temperatures. 

jesse
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