Phos in new lube sample

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Hey everyone,

I am new to this site and was wondering if anybody could help me out. I took a sample of a new lube and it contained 241/ppm Phos. I contacted the manufacturer and they said there is no additive package with this oil. So I took another sample 154/ppm Phos and a third sample 2/ppm phos. All three of these samples were taken from different containers. The nine compressors have a Phos level on between 2-20/ppm. Why would this be? And where is the Phos coming from?

3/3/067:52 AM

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refrigguyMember

The first thing to think about is contamination of the sampling apparatus. It appears the P level dropped with every sample you tested, indicating the samples were cleaning out a P containing material from the apparatus.

3/3/0611:39 AM

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ddavisMember

Two of the samples were taken in July of '05 and the last on was taken in January of '06
January of '06 had the 241 ppm of P.

3/3/0612:57 PM

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