Identification of Glass Instruments and Measurement Devices

MetroBioCen

Involved In Discussions
#1
Hello For years we have calibrated our glass instruments (pipettes, volumetrics, and graduated cylinders) and we have identified their calibration status by marking a "C" in the instrument body. Having hundreds of such instrument, it would be difficult to identufy all of them independently The fact is that one of our customers has requested that all of our glass instruments be marked independently as a way to track their calibration status. As our policy has always been to satisfy the customer to the maximum extense possible, I've been tasked to find a solution. Those instruments do not have serial numbers. The glass instruments are very often autoclaved, heated to 250 °C, cleaned using strong acids or alcalis, so my question is: Is there a way to identify each of our glass instruments?. Does anybody has experience in this field? On the other hand, is there any regulation about this? Any help most welcomed. Thanks in advance.
 
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ScottK

Not out of the crisis
Staff member
Super Moderator
#2
Re: Glass Instruments Identification

The only think I can think of other than rationalizing what you already do is laser etch a serial number on each one. I'm sure that's not a cheap proposition but it should work.
 

Marc

Hunkered Down for the Duration
Staff member
Admin
#3
I found these which might help. One thing I read was "...Although CO2 and solid state lasers both work for marking glass and ceramic, if you are concerned about micro-fractures, it is prudent to avoid using a CO2 laser..."

I remember back in my college days we used an acid for etching glass, but I don't remember the specifics - Sorry.

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