SMART NPK SOIL TEST KIT
Introducing our Ready-to-Use NPK Soil Testing Kit – an innovative, field-portable solution designed to determine Nitrogen (N), Phosphorus (P) and Potassium (K) levels instantly, without any laboratory support.
Created by passionate researchers, this kit transforms soil testing into a simple color/turbidity-based procedure, making nutrient analysis accessible for farmers, agriculture officers, students, and field labs.
Our kit is affordable, reliable, and scientifically validated — giving accurate results within minutes. It works not only for soil but also for water samples, fertilizer solutions, and much more.
Whether you want to test soil yourself or need professional soil analysis and fertilizer recommendation, we have you covered.
Why Choose Our NPK Kit?
✨ On-Site Testing – Get instant NPK results right on the field
✨ Easy-To-Use – No instruments, no electricity, no expert required
✨ Affordable Price – Designed keeping farmers & institutions in mind
✨ Scientifically Validated – Proven accuracy and reproducibility
✨ Multi-Purpose – Works for soil, water, compost leachates, and fertilizer solutions
✨ Educational Tool – Ideal for schools & colleges to teach nutrient chemistry
✨ Portable & Lightweight – Carry it anywhere, anytime
✨ Clear Output – Visual color/turbidity change for quick interpretation
✨ Available With/Without Phone App Support
CHARACTERISTICS TABLE FOR NPK TEST KIT |
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| Parameter | Nitrate-N | Phosphate | Potassium |
| Range in soil (ppm) | < 100 (Low)
100 to 200 (Medium) > 200 (High) |
< 15 (Low)
15 to 30 (Medium) > 30 (High) |
< 50 (Low)
50 to 125 (Medium) > 125 (High) |
| Working range (Soil) | 25 to 175 ppm | 10 to 50 ppm | 25 to 150 ppm |
| Working range (Extractant) | 5 to 35 ppm | 1 to 5 ppm | 5 to 30 ppm |
| Chemical Reagents/Materials in the Kit: | N1 capsule, N2 capsule and ES1 powder | Dip Strip, Purity Powder, Phosphorus Reagent and ES2 powder | Capsule A, Capsule B, Capsule C and ES3 powder |
| Test duration (including soil extraction) | Color Development – 20 mins.
Total. 50 min |
Color Development – 15 mins.
Total. 45 mins |
Turbidity Development: 15 mins
Total: 50 mins |
| Test Observations | ✨ Pink Color formation– Presence of nitrate
✨ No Pink Color formation- No/ Low level of Nitrate |
✨ Blue color formation– Presence of Phosphate
✨ No Blue color formation – No/ Low level of Phosphate |
✨Turbidity formation– Presence of potassium
✨ No turbidity formation- No/Low level of Potassium |
| Sensitivity | ✨ Limit of Detection (LOD): 2 ppm
✨Limit of Quantification (LOQ): 5 ppm |
✨ LOD: 0.5 ppm
✨ LOQ: 1 ppm |
✨ LOD: 3 ppm
✨ LOQ: 5 ppm |
| Validation Results: (No. of samples in %)Within 10% error
10-25 % error |
25 %
68 % |
44 %
37 % |
46 %
17 % |
| Ease of use | · Regional-language manual with demo videos for easy understanding.
· No instruments or expertise required to perform the test. · App support for recommendations and results. · Clear visible color/turbidity for quick interpretation · Ideal for farms, labs, students & extension workers. |
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| Other applications | Water samples, fertilizer solutions etc | ||