4 individual color comparators for pH, N, P, K. 10 tests for each.
- Contains components for 40 tests. 10 each for Soil pH, N, P and K
- Comes with sturdy plastic case
- Simple and detailed instructions included
- pH preference list for hundreds of plants included
- Tips for gardening and altering soil conditions included
| Size | 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 |
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