Yieryi PH Meter ditigal 0-14 Pocket Pen Waterproof Acidity tester Ph pen for pool

    Pocket digital display acidity meter,The introduction of advanced technology and the use of imported components, greatly reducing the volume, reduce the cost, to maintain the original quality, so that the use of acidity meter has been popularized. Pocket digital displayPHIs a classic brand of pocket digital acidity meter,With high stability, high reliability, easy to use, low price and popular worldwide, by the majority of users of all.

Features:

• Measuring range :0.00-14 .00 PH
• Accuracy: +/- 0.01PH
• Resolution: 0.01PH
• Operating temperature: 0 oC~ 50 oC
• Battery: 3X1.5V (AG13 button battery type) ( including batteries)
• Dimensions: 142mm (L) × 29mm (W) × 15mm (H)
• Weight: 51 g
• PH meter calibration while increasing standards:
• 1, the pH electrode into the pH value of 6.86 (25 oCc under standard mixed phosphate buffer solution, and gently shake.
• 2, with a small screwdriver adjust the calibration potentiometer until the display value and the standard buffer solution at ambient temperature ph values.
• 3, the electrodes into pH4.00 stupid phosphorus or potassium acid borax pH9.18 standard buffer solution.
• 4, after about two minutes or so. Shows the pH value of the buffer value is compared to the error should be within the allowable range.

packing list:

• 1 x ATC pH meter with plastic box
• 1 x screw driver
• 3 x AG 13 button cell batteries ( included)
• 2 pouches of calibration buffer solution (4.0 & 6.86)
• 1 x instruction manual ( English)