- Oct 8, 2017
- Reaction score
- Birmingham, AL USA
- Hardiness Zone
Lawn ph is an important thing, yet the variety of home test agents sold are so stupid and have no calibration standards. So I bought some. No additional drops as required in the test tube thingy..I did the drops on the following pic where the 7.0 reference solution was used.
These two seem to aggree.. 5 drops chemistry on the bottom and a cheap gismo on the top of the picture