Currently, we use Caulfield's solution as our fixative while microwave processing our samples. In Caulfield's Buffer Stock A, we use sodium barbital and sodium acetate 3H20. We are finally running low on sodium barbital (last container is from 2010) and I am in the process of ordering more. Since it is a controlled substance, I was asked to see if there are any substitutions. I was wondering what other options, if any, are out there. I am fairly new to the EM world, so I am learning along the way. Any information would be very helpful! Thanks much!
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