I have always sent soil samples to the lab twice a year about 4 to 6 week before planting but decided to find a field test kit so I could get results whenever I needed them and also learn something about the process. I purchased the Environmental Concept #1163 Kit from Harris Seeds
, and it looks like it will work.
I just read through the instructions and want to go back through it again, and then I will retake the samples that I just received back from the lab to see how my results compare. The kit with shipping was $30.90, and it will perform 80 samples (the number of little cotton filters). The Harris Seed page said 20 tests, but it is the #1663 kit with 80. Environmental Concepts offers three kits with either 40, 80, or 200 filters. The tests have been costing me $10 to $13 depending on who does them, and 80 test from the kit will be less than 39˘ each. Money was not the issue for me; it is more about learning something and applying it to what I enjoy working with.