This pH meter is the very best device for checking out the acidity or alkalinity of liquids. It comes with a carrying case and small screwdriver for calibration. It’s simple to make use of – simply dispose of the protecting cap and immerse the electrode within the approach to be measured. Included with the meter are 6.86 and 4.01 pH buffers for an calibration. Instructions for calibration also are included with the pH meter.