--- product_id: 260435839 title: "N-P-K Soil Test Kit" brand: "lamotte" price: "$321.70" currency: USD in_stock: true category: "La Motte" url: https://www.desertcart.ec/products/260435839-n-p-k-soil-test-kit store_origin: EC region: Ecuador --- # Compact 14.5x13.5x8.6 cm kit GLOBE Program certified 50 hands-on N-P-K tests N-P-K Soil Test Kit **Brand:** lamotte **Price:** $321.70 **Availability:** ✅ In Stock ## Summary > 🌱 Unlock your soil’s secret formula—because thriving gardens start with smart science! ## Quick Answers - **What is this?** N-P-K Soil Test Kit by lamotte - **How much does it cost?** $321.70 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/260435839-n-p-k-soil-test-kit) ## Best For - lamotte enthusiasts ## Why This Product - Trusted lamotte brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Complete:** All necessary apparatus, laminated color chart, and clear diagrammed instructions fit neatly in a portable kit. - • **Precision in Every Test:** Perform up to 50 accurate nitrogen, phosphorus, and potassium tests with easy-to-use Tes Tab reagents. - • **Safe & Student-Friendly:** Non-toxic, hands-on testing ideal for upper elementary to high school students with adult supervision. - • **Scientifically Certified:** Designed to meet The GLOBE Program standards, ensuring educational credibility and environmental relevance. - • **Focused Nutrient Analysis:** Specialized testing for N-P-K levels to optimize soil health—pH testing not included for targeted precision. ## Overview The N-P-K Soil Test Kit by LaMotte offers 50 safe, hands-on tests for nitrogen, phosphorus, and potassium levels, packaged with all necessary tools and easy instructions. Compact and GLOBE Program certified, it’s perfect for students and educators aiming to master soil nutrient analysis with precision and confidence. ## Description For upper elementary, middle, and high school students. Students can perform upto 50 safe, easy, hands-on tests for nitrogen, phosphorus, and potassium levels using Tes Tab (TM) testers. Each kit includes the necessary apparatus, simple diagrammed instructions, and laminated color chart. Specifically designed to meet The GLOBE (Global Learning and Observations to Benefit the Environment) Program (TM) standards. WARNING: LaMotte products are not toys. Adult supervision is strongly recommended. Products may contain ingredients that require additional safety precautions; refer to all safety guidelines and Material Safety Data Sheets contained on the MSDS CD or at. ## Features - There are 50 safe, easy, hands-on tests for nitrogen, phosphorus, and potassium using Tes Tab - Each kit includes the necessary apparatus, simple diagrammed instructions, and laminated color chart - Specifically designed to meet The GLOBE (Global Learning and Observations to Benefit the Environment) Program standards - Does NOT come with a soil pH test, only tests for N-P-K ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0080GQY56 | | Brand Name | LaMotte | | Customer Reviews | 4.0 4.0 out of 5 stars (66) | | Item Dimensions | 14.5 x 13.5 x 8.6 centimeters | | Item Weight | 5 g | | Manufacturer | LaMotte | | Manufacturer Part Number | 5880-6 | | Model Number | 5880-6 | | UPC | 637395088919 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** LaMotte - **Item dimensions L x W x H:** 14.5 x 13.5 x 8.6 centimeters - **Item weight:** 5 g - **Number of Items:** 1 - **Unit count:** 1.0 Count ## Images ![N-P-K Soil Test Kit - Image 1](https://m.media-amazon.com/images/I/61RZ+FJ8uAL.jpg) ## Questions & Answers **Q: I would have bought it, as it is the highest rated for accuracy, but you do not mention its use for gardeners.** A: The best that you can do with any of the three elements is to get rather crude measurements, i.e., "high, medium, low," by visually comparing the color or opacity (for K) developed in the cuvette to a reference card that is included with the kit. So, in order to have an idea which of those relative levels is adequate for a plant species, you would have to have different beds with different levels of those elements in which that single plant species is growing for comparison. In spite of that somewhat limited ability to distinguish different availabilities of the elements, the chemistry is convenient and very easy to use. Be careful to follow the instructions and to use distilled water for extracting the soil (otherwise, you need to analyze a "blank" of your water source with no soil added in order to see if the water is rich in any of the three elements). It is important to be consistent in the time allowed for color development in order to ensure that results are repeatable. **Q: need to test water for hydroponics** A: I suspect there is a way to use this for hydroponics but have not found anything to say how. It appears that the commonly used tests for hydroponics are ph and TDS or EC. Note that TDS and EC measurements are two different ways of measuring the same thing so you don't need both. The TDS (total dissolved solids) or EC (electrical conductivity) is a general gage of the quantity of nutrients in the water. The ph is important because if the ph is wrong the plants will not absorb the nutrients. That said amazon does sell inexpensive ph, TDS and EC meters that are easy to use. You should get reference solutions to calibrate these meters. (be careful not to contaminate your reference solutions with your nutrient solutions!) If you are looking to do custom nutrient solutions or replenishment of individual nutrients some of the nutrients can be measured using aquarium test kits but some of those test kits do not have a range that is fitting for hydroponics. I purchased the LaMotte N-P-K soil test kit for soil based gardening but I also do some hydroponics. I have not yet found tests (or a way to use this test kit) to measure the individual hydroponic nutrients. **Q: How many of each test can be performed with this kit?** A: 50 tests of each of N, P, and K can be performed (measuring in comparison to a color card as "Low, Medium, or High"). BUT there are only enough extraction tablets for 50 extracts. So, the presumption is that you do N, P, and K tests on each extract. If you only want to do N or P, before disposing of extracts, then you'll be limited to 50 tests (the total number of soil extractions that you can perform). **Q: How long do the test chemicals last, do they go bad?** A: If stored in high humidity (e.g., Miami summer weather) in spite of the foil packaging, they will not last a year. But, if kept in an air conditioned room (or even in a freezer), they should last a year or more, although there may be a diminution of potency. The best way to check is to have KNOWN high concentrations of N, P, and K, so that you can see if you get full color development. Freezing a soil sample that analyzed as "high" for all three elements when the chemicals were fresh should work to provide such a check (i.e., "positive control"). ## Frequently Bought Together - NPK Soil Test Kit - Garden Tutor Soil pH Test Kit – 100 Strips with AI-Powered Web Reader – Accurate Testing for Lawn, Garden & Compost – pH 3.5–9 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/260435839-n-p-k-soil-test-kit](https://www.desertcart.ec/products/260435839-n-p-k-soil-test-kit) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-06-24*