Is this kit for a one-and-done test? If so, where and how much are refills for this product?

This test has several capsules for each test you want to run. My soil was really depleted. So I tested the first time to see what it needed, and then added those nutrients, and a week later tested again. I used the recommendations on the instructions to "fix" the soil, and it worked really well. The kit is easy to us. Read the FULL INSTRUCTIONS on the inside. The short version does not work. It will take a few hours or even days for some, because you have to put the soil in "purified" water, and let the soil settle to the bottom and the liquid become as clear as possible. I bought these on Amazon and if I remember right paid less than $10 for the complete kit. It was cheaper that way. I love these tests. Hope this was helpful.

can you use it for several seasons.. or do the chemicals go bad once opened to the air?

The chemicals are in capsules. I used mine throughout the season last year on multiple foot plots around our property. Each variety of capsule is in its own sealable baggie also. You should be good as long as you keep them away from open moisture.

how many capsules do you get and how easy are they to find?

There were 10 capsules for each test, easy to do, and fairly accurate I think. I'm a science teacher and have used this type of test before. They were color coded and in separate bags.

Can i get spare capsules for the tester on amazon?

If you want to test across multiple seasons, look for "Luster Leaf 1880 Rapitest Tester Electronic 4-Way Analyzer, Soil". The meter can be used over and over without regard to having any chemical capsules to use.

Luster Leaf 1602 Soil Kit 20 Tests

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Description

🌿 Unlock your garden’s hidden potential—test, tweak, thrive!

COLOR COMPARATOR MAGIC - Patented color chart ensures easy, reliable results without guesswork.
20 TESTS MULTIPLE SPOTS - Test up to 20 samples—perfect for mapping your entire garden’s soil health.
GARDENERS BEST FRIEND - Includes detailed instructions and pH preferences for 450+ plants—ideal for pros and beginners.
PRECISION IN EVERY CAPSULE - Innovative capsule system delivers fast, accurate soil pH and nutrient readings.
OPTIMIZE YOUR YARDS POTENTIAL - Know your soil’s N, P, and K levels to fertilize smart and boost plant growth.

The Luster Leaf 1602 Soil Kit offers 20 quick, easy-to-use tests for soil pH, Nitrogen, Phosphorous, and Potash using a patented color comparator system. Designed for both beginners and experienced gardeners, it includes detailed instructions and a plant pH preference guide for over 450 species, empowering you to optimize soil health and maximize garden productivity.

Specifications

ASIN	B01HQXF0PS
Brand	Luster Leaf
Brand Name	Luster Leaf
Customer Reviews	4.1 out of 5 stars 2,155 Reviews
Global Trade Identification Number	00035307016027
Item Type Name	Soil Test Kit
Manufacturer	Luster Leaf
Manufacturer Part Number	1602
Model Number	1602
Number of Packs	5
Style	Soil Test Kit
Style Name	Soil Test Kit
UPC	035307016027
Unit Count	20 Count
Unit count	20 Count

Reviews

V**S

All good

Perfect easy testing

24.04.2026

V**I

Luster Leaf 1602 Boden-Set

Lieferung wie verschprochen. Artikel wie beschrieben.

6.11.2024

F**H

Didn't work for me

I was very keen on using this test to test my soil here in Australia. Unfortunately only the K one triggered a result. Tried it twice (once with really cloudy and once with less cloudy water.) I find it hard to believe that my luscious well maintained and well fertilised lawn is completely devoid of N+P.

28.03.2022

H**T

Excellent, Accurate Soil Test Kit

Very easy to use & reliable results as compared to a professional university extension office soil analysis. It's a great value for the money and has 20 tests total (5 each for Soil pH, Nitrogen, Phosphorous and Potash). Instructions were straightforward and easy to understand.

16.05.2026

J**R

Works well easy to use

Excellent wee kit very easy to use with distilled water and hopefully should give my garden a bit of an edge

21.05.2026

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TrustScore 4.5 | 7,300+ reviews

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