Buffer 7
Buffer 7 is used for the calibration of your pH digital meter. It is recommended that both Buffer 4 and Buffer 7 are used in conjunction to ensure accurate calibration in the range (pH 4 to pH 7). Calibration is essential for the correct readings of your digital meter.
Buffer 7 500ml
$14.95
“Hi Mike, just received my order (Wednesday) here in SA which I ordered on Sunday. Great service, was wonderful to have such good customer service.”