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Reviews (29)

Jun 03, 2019
Instant laboratory refrigerator!
So simple and so inexpensive. At first I wasn't sure about the local temperature and relative humidity so I popped the probes in my refrigerator and switched to (OUTSIDE) and within a minute I had exactly what my laboratory refrigerator was reading. I'm pleased they didn't include the AAA battery. Most times a supplied batteries are not that good and prefer to use a quality battery of my choosing. Accuracy is quite good and the display is readable at 8 feet at the least.

Dec 26, 2018
Excellent reference resource.
Current chemistry techniques with good examples of the various methods.

Sep 20, 2019
A Good Night Guard For Less
I purchased one at the local chain Drug Store for twice the price even though they are identical. A Great Value!