Jump to content
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble

Recommended Posts

We recently got a new freezer for the Blood Bank. I am performing my first validation. I am comparing the NIST against the digital display as well as the chart and our own, seperate thermometer. I cannot find any documentation to support how much difference is acceptable between the NIST and the digital read/our thermometer/ etc. Some places I have read say 0.5 degrees which seems very tight to me. Another facility I work for uses 1.0 degree difference which seems more acceptable and able to obtain but I have not found any supporting documentation anywhere!

Can someone help me? When validating, what difference is acceptable between the NIST and the other thermometers, be it the probes in the unit or your own internal thermometers?

Share this post


Link to post
Share on other sites


1 hour ago, mollyredone said:

We use 1.0 degree.

Do you really read freezer temps to a tenth of a degree?  A typical freezer temperature recorder chart cannot be read to a tenth of a degree nor can a refrigerator temperature recorder chart be read to a tenth of a degree.

Edited by Dansket
modified sentence

Share this post


Link to post
Share on other sites
15 hours ago, Dansket said:

Do you really read freezer temps to a tenth of a degree?  A typical freezer temperature recorder chart cannot be read to a tenth of a degree nor can a refrigerator temperature recorder chart be read to a tenth of a degree.

Yes, the digital temperature readout, which is also calibrated, does read out to 0.1 degrees.

Share this post


Link to post
Share on other sites

We use within 2 C for our freezers, and within 1 C for room temps and refrigerators.

Whatever you use, you must be able to show that whatever you use for documentation (recorder charts or logs), are going to be in compliance within that variance.  

Scott

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By sarara26
      I am switching from an Immucor antibody panel to a Quotient antibody panel and need to do a validation.  Does anyone have any suggestions regarding this? How many samples (both pos and neg) I should use or know of any references I can look at?
    • By BloodBankGuy
      Hello Everyone,
      Need some guidance on validation of blood warmers.  Recently our clinical engineering bought 24 new blood warmers, same model and brand of what we have already used and validated.  We have just recently validated 6 of the 24 new ones with running blood through them and taking whole blood potassium levels at hourly intervals. 
      The question we cannot agree on is do we need to validate every single blood warmer or is the 6 that we have done a sufficient sampling to be able to make a blanket statement that the warmers are ok for patient use.  Anyone have any evidence based answers to this?  At this point I'll take just some good advice!  Thanks in advance.
       
       
    • By linzeej12
      Hello everyone,
            We have just received the OrthoWorkstation to replace our ID-MTS. What kind of validation did you use? How many positive and negatives for parallel testing? Just trying to get an idea before I get started. The manual has no recommendations as to how to validate. Also, what kind of thermometers are you using for it? I know we are going to have to get a new one to fit inside one of the gel cards. 
    • By mrkriger
      Has anyone installed a new blood bank refrigerator recently?  I know we need to do IQ, OQ, and PQ.  Does anyone have plans that they have used successfully that you would be willing to share.  Did you perform temperature mapping or have it performed by vendor or third party?
    • By emmam
      I’m looking to replace blood bank refrigerators, freezers and shock freezers.  I’ve reviewed manufacturers and products via the internet, as well as, read past blogs.  It appears that the leading manufacturers are Helmer, Follett and Thermo Scientific.  Any information that you can provide on quality, reliability, service costs, total cost of ownership, temperature distribution, temperature recording and how long products will maintain the required temperature during a power outage would be helpful.  I may take this opportunity to move away from chart recorder to an electronic monitoring system.  Does anyone have any experience with them?  Thank you in advance for any information you can provide. 
  • Advertisement

×