Luster Leaf

Rapitest Digital Soil Test Kit 1605

  • Sale
  • Regular price $36.99

Luster Leaf 1605 Rapitest Digital Soil Test Kit for pH, N, P and K, 1

Quickly and easily tests soil samples. Includes 10 tests for pH and 5 tests each for nitrogen, phosphorus, and potash.

The electronic version of Luster Leaf’s popular 1601 Soil Test Kit. The Rapitest Digital Soil Tester utilizes advanced LED digital technology and patent-pending optical calibration system to read test colors. The system is calibrated to read small color variations that can be difficult to distinguish with the human eye. The tester is easy to use. Just follow the easy instructions for each soil pH, nitrogen, phosphorus or potash tests; slide the test tube in the optical chamber and push the appropriate button to get the test results. Once you have your soil test results, the tester booklet tells you how to adjust soil pH and provides recommendations for fertilizers. The booklet’s pH preference list allows you to select plants for your soil’s pH or know how much to adjust the soil pH for your current plants.

  • Reads test colors utilizing advanced LED digital technology
  • Just push the test button to get results in a few seconds
  • Includes pH preferences for over 450 plants and how to adjust soil pH
  • Booklet has fertilizer guidelines based on nitrogen, phosphorus, and potash test results.
  • Performs 25 tests: 10 for pH and 5 each for Nitrogen, Phosphorus and Potash

Why test YOUR SOIL

Plants need food (nutrients) for healthy growth. Nitrogen, Phosphorus, and Potash (N, P, and K for short), play a vital role in plant growth just as vitamins, minerals, carbohydrates, and protein do in our health.


For gardeners already familiar with soil testing you'll appreciate the unique, patented, specially designed "color comparator" and capsule system, that make quick work of testing. For those of you new to sol testing, you will appreciate this easy, fast, and fun way to achieve better-growing results from your gardening efforts!

Everything is color-coded, including the color comparator films and capsules. All you do is take a sample of soil, mix with water, transfer some of the solution to the color comparator, add powder from capsule, shake and watch the color develop. Then, note y0ur test results. Fast, easy and it only takes a few minutes!


Soil should be tested periodically throughout the growing season, but it is especially recommended to test before planting in Spring and when preparing beds in Fall. And, if you feel your plants are not growing well, a soil test may help.