lab217 Posted October 11, 2011 Share Posted October 11, 2011 I would like to know how everyone is validating thermometer accuracy. In the AABB technical manual, the procedure describes "recreating" the desired temperature in a beaker. Does anyone place a NIST certified thermometer in the fridge/freezer for a determined amount of time and compare the two temperatures?I don't know how to recreate -30 C! Link to comment Share on other sites More sharing options...
David Saikin Posted October 11, 2011 Share Posted October 11, 2011 I can't do -30 . . . what I do is -20 when I do my alarm checks. Link to comment Share on other sites More sharing options...
Dr. Pepper Posted October 11, 2011 Share Posted October 11, 2011 We have a calibrated digital thermometer. If you don't have one I bet you could borrow one from your clinical engineering dept. I stick the probe in the bottle with the thermometer probe of the FFP freezer, shut the door on the cord and give it a few minutes to let it equilibrate to -29-30o. Link to comment Share on other sites More sharing options...
Auntie-D Posted October 11, 2011 Share Posted October 11, 2011 Pre-calibrated digital thermometers is what we use. And I have found it's cheaper to replace them than to send them off for calibration when it is due... Link to comment Share on other sites More sharing options...
Malcolm Needs ☆ Posted October 11, 2011 Share Posted October 11, 2011 We do that too. Link to comment Share on other sites More sharing options...
mollyredone Posted October 11, 2011 Share Posted October 11, 2011 Where do you get your pre-calibrated digital thermometers? Actually most of our refrigerators and BB equipment has Isensix monitors so I don't have to worry about them. But there are still a couple left. And no one knows when our $3000(!) NIST thermometer was last calibrated! Link to comment Share on other sites More sharing options...
AMcCord Posted October 12, 2011 Share Posted October 12, 2011 The companies who supply your 'stuff' like test tubes, pipettes, etc etc will have the thermometers most likely. I order mine from Cardinal. Fisher has them. ML has them. Lots of choices, so if you aren't locked into buying from a specific vendor, you can shop for the best price. Link to comment Share on other sites More sharing options...
Auntie-D Posted October 12, 2011 Share Posted October 12, 2011 We're tied to Fischer Link to comment Share on other sites More sharing options...
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