Establishing traceability from calibrated glassware to non calibrated ones

[Mallya]

My questions may be very basic.

2. How to establish traceability from calibrated glassware to non calibrated ones

Thanks

Mall

 

[Stijloor]

A Quick Bump!

Can someone help??

Thank you very much!!

 

[Marc]

I'm not sure what you mean. If you were using calibrated glassware before, why are you (what is the justification for) switching to non-calibrated ones?

 

[Mallya]

Thanks,

We couldn't calibrate all g/ware and we have few calibrated as references and we want uncalibrated to be traceable to calibrated ones

Thx

 

[Marc]

You use your calibrated glassware as your reference. You can write an in-house calibration procedure and "calibrate" your other glassware to the one you have a calibration cert for. The calibration cert for the calibrated glassware should provide the traceability link you need for backward traceability to the standard the cal lab used for their calibration.

NOTE: I am not a calibration specialist with regard to glassware such as beakers, thermometers and such, so my reply is a general one.

 

[Hershal]

Marc is correct. However, for the internal calibration to be traceable, you must also calculate the uncertainty of your measurements. Understand that volumetric, gravimetric, and photometric have different limits and different uncertainty contributions.

Hope this helps.