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PBS and ph testing


Jody

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  • 2 weeks later...

We buy 3 pH buffer standards from our distributor (cheap)- low normal and high. We test the 3 buffers monthly along with our saline on pH paper. This works out well and we've had no issues.

I need to pass this info along. I do not believe we QC the pH paper. Yikes!

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  • 3 weeks later...

We test the pH also for our instrument, I have the certificate of analysis for the pH paper but we do not do QC on the paper. if we would start to have results out of the norm I would perform testing on the pH paper as part of troubleshooting. I was trying to find out if there is a standard (AABB, CAP, or otherwise), that states that pH paper needs to be quality controled.

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