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Is the MKIII Purge Monitor good enough for stainless steel welding?

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Is the MKIII Purge Monitor good enough for stainless steel welding?

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This instrument has become the world standard for measuring Argon purge quality in welding tubes, pipes and tanks. It shows when the oxygen has been removed down to 0.1% (1,000 PPM) and that there are no leaks or other causes for oxygen to remain in the presence of a weld. Once 0.1% has been reached, coking, blackening and serious oxidation does not occur. Those applications requiring improved degrees of cleanliness can set a procedure to wait 1 or 2 minutes after the 0.1% level has been reached.

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