[Histonet] adjusting pH for formalin

Vaughn Fierke Vfierke <@t> SNBLUSA.com
Thu Dec 15 13:06:55 CST 2005

Anyone with an idea to bring up the pH of 10% formalin to 7.0. Our
recycler tests 5 gallon batches at 6.2 and the paths would like
everything at 7.0. One source says add 1% sodium phosphate dibasic;
others say use SP dibasic saturated solution. Another source says that
using 1% sodium hydroxide is ok and won't alter fixation. Any consistent

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