Replenishment Calibration Solutions (1 pint each 4 and 7 pH).
2014 Master Catalog: Page 440
(based on 1 review)
Reviewed by 1 customer
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does what it is supposaed to do
from marine city, mi
About Me Casual Do-It-Yourselfer
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Comments about pH Calibration Solution Kit (1 pint each 4 & 7 pH):
I just need to calibrate the pH monitors that I use in several aquariums. Hanna solutions work well. The large bottles are convenient to keep on hand.
Bottom Line Yes, I would recommend this to a friend
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