pH BUFFER 7 is good for a standalone and also as the upper calibration point in the two point’ calibration of electronic meters.
If using two point calibration, regularly calibrate your pH meter with both pH BUFFER 4 and pH BUFFER 7 calibration solutions to ensure that your meter is operating with precision and accuracy between pH 4 and 7.
Monitor the pH on a daily basis. As plants grow, demand for nutrients increase. This means the pH can fluctuate and therefore should be tested and adjusted to maintain an optimum pH between 5.8 – 6.5