Apera Instruments , LLC AI221 Pen Tester, SX610, Waterproof, 0.1 pH Accuracy, 0-14.0 Range, Suitable for Test Tube Testing, Replaceable Probe

The Apera Instruments SX610 pH Pen Tester is featured with reliable measuring performance with a single-button operation in a slim body. A cost-effective choice for your regular pH testing, including hydroponics, aquaculture, water treatment, pools and spas, brewing and so on. The pH probe is replaceable and suitable for test tube measuring, which is especially suitable for educational use. Easy Auto Calibration (1 point: 7.00) with buffer recognition and 0 to 60˚C Auto Temperature Compensation (ATC), ±0.1 pH/1.0˚C accuracy with 0 to 14.0 pH measuring range. Intelligent functions: switch from ˚F to ˚C, automatic power-off, low battery alarm, pH probe invalidation reminder (Remind you to replace the probe for better performance). The meter comes with a complete kit of premixed calibration solutions (7.00), storage solutions (3M KCL), CR2032 lithium batteries all in a portable carrying case. IP57 waterproof and dustproof floats on water, so you don’t have to worry if it falls into the water by accident. The meter is CE certified (6 months for the probe). The AH7:AH31