Can someone please explain the purpose of Ph buffers. Do you need them? Why are there specific amounts? Do they correlate with Ph up/down or IS ph up/down a buffer in its own? I bought a hanna 4 in one combo gro check. It came calibrated already but included Ph 4.01 and Ph 7.01 solutions for calibration? What are these packets? Do I need them? They are 20 mL each. Are these one time applications? Can I use them more than once? How do you store it if you can use it more than once because they came in packets similiar to fast food ketchup packets. All comments appreciated.

Thanks :rastasmoke:
GodBud Reviewed by GodBud on . Someone please explain... Can someone please explain the purpose of Ph buffers. Do you need them? Why are there specific amounts? Do they correlate with Ph up/down or IS ph up/down a buffer in its own? I bought a hanna 4 in one combo gro check. It came calibrated already but included Ph 4.01 and Ph 7.01 solutions for calibration? What are these packets? Do I need them? They are 20 mL each. Are these one time applications? Can I use them more than once? How do you store it if you can use it more than once because they Rating: 5