Your pH meter, unless it is a very sensitive (expensive) meter with a
very good electrode and has been properly calibrated that day is
probably off at least 0.05 - 0.1 pH units so don't worry.
Geoff
Greg Dobbin wrote:
Hi Folks,
If the pH of our 10% Neutral Buffered Formalin is reading 7.01
(recycled) and 7.12 (made from new formaldehyde), should I try to get to
7.2? If yes-how- add sodium bicarbonate?
I look forward to your responses.
Warm regards,
Greg
Greg Dobbin, R.T.
Chief Technologist, Anatomic Pathology
Dept. of Laboratory Medicine,
Queen Elizabeth Hospital,
P.O. Box 6600
Charlottetown, PE C1A 8T5
Phone: (902) 894-2337
Fax: (902) 894-2385
"I find that the harder I work, the
more luck I seem to have."
- Thomas Jefferson
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Neuroscience and Cell Biology
Robert Wood Johnson Medical School
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