I'll only dealt with changeable filters that come with a certificate.
Can anybody provide with some information on the calibration of reusable filters, screens and strainers. How are strainers sized, I have a couple of strainers in the plant no one knows the size of.
Some info. on, for example, what is written on the filters, might elicit more direct information.
Or perhps the previous post has answered yr query ? IMEX, the size is usually stamped on the product >> Reference Table depending on BS, US, etc
Or did you want something like this ? -
Calibration of Filter Media Using NIST Traceable Reference Standards.pdf 651.1KB
Rgds / Charles.C