Folks, I'm trying to measure soil and compost for use in home gardening of vegetables and herbs. My goal is to use compost primarily, and augment it as necessary. The compost is mostly vermicompost, though I do have some residual of the other kind.
Aside from sterilizing the compost, I'd like to measure it and make sure my seedlings get a nice home. I have a electronic pH test kit, and would like to measure NPK. Is it possible to get a numeric reading that I can make sense of? My problems is that I'm color blind, and matching a color to a number is really difficult for me. Oh, and I'd prefer it to be under $50, but would settle for under $100.