Dr.meter 0.1pH PH002 High Accuracy pH Meter/pH Pen Tester with ATC LCD 0-14 pH Measurement Range (PH002 pH Meter for Water)

https://www.amazon.com/Dr-meter-0-1pH-Accuracy-Tester-Measurement/dp/B00PU0W35K

• Measurement range of 0-14 pH - highly accurate, reliable and quick readings, included with the meter are 6.86 and 4.01 pH buffers for an calibration.
• Comes with carrying case and small screwdriver for calibration, lightweight, handheld design for portability and convenience
• It is easy to use - simply remove the protective cap and immerse the electrode in the solution to be measured.
• Package Included: 1 × PH meter , 1 × Carrying case, 1 × Calibration screwdriver, 2 × PH buffer powder (for calibration) ,1 × User manual.
• Dr.meter PH meter is perfect device for testing the acidity or alkalinity of liquids, great for all home and laboratory pH testing applications including aquariums, swimming pools.