6.25" long overall, probe is 1 and 7/8" long. Blue plastic housing. Does not measure moisture like the HB2.
Product Features
These are not made for saline or alkaline soil with a pH over 7.5 pH.
Warranty
Manufacturer provides it to be free of defects upon arrival, otherwise no other warranty applies. Not repairable, and no replacement parts are available, but will last for years when handled with care. A lighter-duty version of the HB2.
ANSWER: The meter utilizes a tiny flow of current through the two metal plates located on each side of the units housing.
QUESTION: Which side of the cleansing sheet do I use?
ANSWER: Use the dull side.
QUESTION: Where can I get the green cleansing sheets to clean the Kelway Acidity Tester?
ANSWER: Kelway deals direct in supplying these sheets. Call 201-847-8353, or write Kel Instruments, PO Box 54, Wyckoff, NJ 07481. They will not sell meters direct but do offer the cleansing sheets.
QUESTION: Can the meter be calibrated?
ANSWER: When not in use the meter should read neutral at pH of 7. There is an adjustment screw in order to calibrate periodically if needed.
QUESTION: Why test for soil acidity?
ANSWER: Nutrients cannot dissolve in very acid or alkaline soil.
QUESTION: Why choose a direct reading soil tester?
ANSWER: Litmus paper is not accurate enough and is difficult to use and interpret. Laboratory glass electrode ph meters require buffer solutions, temperature control, power sources,clean equipment and are very fragile.