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Luster Leaf 1601 Rapitest Soil Test Kit

My Rating:​​​​​

If you are an avid gardener, then you already know how important fertilizer is to plants’ overall health. However, are you familiar with what nutrients your soil is missing and your plants might need? This is why having a quality soil tester on hand is essential. Not only will it tell you what crucial components your soil is missing, but you will also know what you need to add to your soil to achieve the proper pH levels.

The Luster Leaf 1601 Rapitest Soil Test Kit is one of the most popular soil meters on the market today – for good reason! Read on to see what this test kit has to offer. 


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    The instructions are well-written and easy to read.
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    The kit is simple to use and is not “messy”.
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    Luster Leaf’s patented color comparator system provides the user with simple color comparisons, which are easier to interpret than traditional printed color charts.


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    The included test tubes can be difficult to fill.
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    Some reviewers have found the results of the pH tests to be inaccurate and have had to send off their soil samples to be professionally tested.


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    The test kit includes color comparators for potassium, phosphorus, nitrogen, and pH.
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    Test kit assembly is done in the United States.
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    In total, this kit will conduct 40 different tests.
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    A chart, which features the ideal NPK and pH levels for more than 100 unique plants, is included.
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    A booklet with instructions on how to adjust soil conditions is also included.


The Luster Leaf 1601 Rapitest Soil Test Kit has fared well in both professional and consumer written reviews. The kit incorporates digital LED technology, which uses colors to decode test readings. Users have repeatedly praised the easy to use design of the kit. With the simple push a button, test results are delivered in under a minute. The kit’s testing catalog includes more than 450 popular plants that you can test pH preferences for, and an included instructional guide provides information on how to adjust soil conditions as needed.

Everything included in the test is color-coded, including the capsules and the color comparator films. All that is required is for you to take a sample of the soil you’d like to test, mix it with the appropriate amount of water, and then transfer the solution to the color comparator. Powder from the capsule is added to the color comparator, shake, and then watch the color begin to develop. Then, compare your test results to the included pH and NPK chart.

An instructional booklet comes with the Luster Leaf 1601 Rapitest Soil Test Kit, and it offers guidance on how to fertilize your soil based upon the results of your potash, nitrogen, and phosphorous test results. The testing kit will conduct 25 basic tests, with another 10 that test designed for pH alone and additional 5 solely for phosphorous, potash, and nitrogen.

Luster Leaf recommends that users test their soil regularly throughout the growing season, but at a minimum, it should be checked before planting in the spring and fall (depending on the plants you are putting down). 

Luster Leaf 1601 Rapitest Soil Tester, Test Kit for pH, N, P and K
1,245 Reviews
Luster Leaf 1601 Rapitest Soil Tester, Test Kit for pH, N, P and K
  • Quick, at home results for Soil pH, Nitrogen, Phosphrous and Potash
  • Innovative and inexpensive soil test kit features an easy-to-use capsule system and patented color...
  • Contains all components needed for 40 tests. 10 for each of pH, N, P and K
  • Simple, detailed instructions included. Great for beginners and experienced gardeners alike.


Overall, the Luster Leaf 1601 Rapitest Soil Test Kit appears to be a highly rated and affordable test kit for determining soil conditions in residential settings. A small percentage of users have complained about the test kit’s reliability, but given the variation in soil from one geographic region to the next, inaccurate results cannot be blamed solely on the test kit alone. If you are looking for a straightforward, no-frills soil test kit, the Luster Leaf 1601 is a reliable option.

About the author

Matt Hagens

Hi, I'm Matt the owner of Yard Care Gurus. I love to be outside working on my lawn, planning my next project. I created this website to help people like you find the best products for yard care and great advice. Thanks for stopping by!

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