Item Number: TM341
RapiTest Soil Test Kit pH/N-P-K
Fast, Accurate Soil Testing for Home & Garden
Get quick, reliable insights into your soil with the RapiTest Soil Test Kit—a user-friendly solution designed to measure pH, Nitrogen (N), Phosphorus (P), and Potassium (K). Whether you're a beginner or seasoned grower, this compact soil test kit helps you learn your soil composition and nutrient levels so you can add the proper fertilizers and amendments to optimize plant health and boost yields.
Key Features:
- Tests for pH, Nitrogen, Phosphorus & Potassium (N-P-K)
- Includes 40 test capsules (10 each for pH, N, P, K)
- 4 color-coded comparators for easy reading
- Easy-to-follow instructions
- Quick results in just minutes—no lab required
- pH adjustment tips and fertilization guidelines
- pH preference chart for over 450 plants
- Compact and portable design for easy field or garden use
Why Use a Soil Test Kit?
Soil testing is essential for healthy plant growth. Knowing your soil's pH and nutrient levels lets you adjust fertilizer use effectively, saving time, money, and reducing environmental impact. The RapiTest Soil Test Kit makes this process simple and fast—ideal for lawns, gardens, and container plants.
Easy to Use:
Just mix soil with water, add a capsule, shake, and compare the color result. Designed for convenience, the RapiTest Soil Test Kit helps you monitor soil health regularly and with confidence.
Upgrade your gardening results today with this affordable, all-in-one soil test kit—trusted by home gardeners and professionals alike. Check out our full collection of NPK soil testing kits to find the right option for your growing needs.



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Our Guarantee To You
Since 1976, we've served our customers at every stage of growing. Please contact us at any time. We are happy to support and assist you.
Shipping Information
Shipping Information
Shipping Weight: 0.35 lb
Dimensions: 10.25"L x 5.75"W x 1.25"H
Features
Features
- Tests for NPK
- Tests for pH
Characteristics
Characteristics
Use Instructions
Use Instructions
Useful Information
Useful Information
Guarantee
Guarantee
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This kit gives you all the basic information about your soil that you need. It tells you what you lack or have excess of and even has a guide on how to amend the soil based on your results. You can test each of the four areas (N, P, K, &PH) up to ten times per kit. I used this kit and found out my soil has no Nitrogen or Phosphorus. K and PH were fine. I came back to Peaceful Valley and got the amendments I need for my soil. I hope this kit keeps giving as I grow my garden!
Easy to follow directions. N-P-K have the same process, pH has slightly different directions. Easy to read the results. This packet can be used 10 times overall for each nutrient and pH. Good value if you don't have the money to spend on a lab. Gets you decent basic readings on your soils nutrients. Mainly be sure to actually read and follow the directions!
This test kit is so easy to use, and easy to tell what I need to do to amend my soil for my plants.
An easy to use soil test kit that quickly gives the status of not only the soil pH, but also measures the N-P-K levels so that soil additives can be customized to optimal vegetable production. Got this soil test kit to check the quality of the soil put in new raised bed gardens, and I quickly knew exactly what I needed to do with each individual bed.