Buy from Amazon.com : http://best.waitmejapan.com/?asin=B06Y48KW5R
VT06 Soil Ph Moisture Meter 295mm Long Electrode Soil Monitor Meter Hydrometer for
Product Description :
Longer and slender 295mm electrode for deep penetration into the soil
Durable and trouble-free life Soil pH measuring range 3 - 8 pH
Fast pH moisture measured reading Soil Moisture level 1 - 8
Measures pH and moisture value of different kinds of soil Accuracy 02 pH
Great for quick pH moisture of Gardens PlantersLawn Maintenance Green houses and Vegetable production