Rapitest Soil Test Kit
It's vital to know the existing pH, nitrogen, phosphorus and potash levels in garden soil. The soil's pH controls the availability of these three nutrients essential to plant health. Test results allow the gardener to amend and fertilize appropriately, ensuring the best possible growing results.
Contains 40 tests: 10 each for pH, nitrogen, phosphorus and potash. Patented color comparator system and capsules.