so I have been gifted a bottle of growth technology Ph 7 buffer for calibrating ph meters though the bottle has no directions for use. Does anyone here know if I have to dilute the solution in water (if so what measurements) or do I use the solution pure???
It's solution buffered to PH 7 providing it's not stored at extremely low or high temperatures. Pour some out into a separate short glass to prevent contamination and dip your PH pen in. If it doesn't come up 7, it needs calibrating.