This instrument tests soil in 3 minutes. The tester operates on the principle of electrical potential between two dissimilar metal plates - without batteries or any external power source. When inserted into moist soil the HB-2 registers degree of acidity on the upper scale. The lower scale shows degree of moisture (% saturation) when the switch button is held depressed.

Features:

• Includes 2 sheets of KCF conditioning film
• Get on the spot results without time lag
• No batteries or chemicals
• Reliable - Accurate - Portable
• Only 6.5" long - Weighs 8 oz.
• Complete with handy carrying case
• Added Feature - Moisture Test Circuit
• Press button and read % saturation of soil