Rapitest Electronic Soil pH Tester- pH Meter and Fertility Tester
Determines soil pH and total combined N-P-K in one handy unit. Both tests can be completed in about one minute.
Test your soil pH and nutrient levels of your soil quickly and without chemicals. You can check several spots in your garden and flower beds. Don't forget to test the herb garden, too.
Allows quick analysis, so you can correct soil levels for ideal plant growth.
Use over and over again for years.
Requires one AA battery, not included.