SX610 pH Pen Tester, Suitable for Test Tube pH Testing


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, water treatment, education, pools& spas, and so on. The pH probe is replaceable and suitable for test tube measurements, which is especially good for educational use.

  • Easy SINGLE-Button Operation, Smallest Pen-Style design with replaceable probe (good for test tube measurements)
  • AUTO Calibration with auto buffer recognition; Auto Temperature Compensation (ATC) ensures accuracy in variant temperatures (0-60℃)
  • COMPLETE KIT with READY-TO-USE calibration solution, KCl storage solution, and batteries in a portable carrying case
  • Intelligent functions: automatic power-off, low battery alarm, and pH probe invalidation reminder
  • AUTO RECOGNITION and REMINDER of stable values improves consistency, saving you the trouble of guessing when to manually hold measurement

Easy Auto Calibration (1 point: 7.00 pH) 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: 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 pH), 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.


pH-Measuring Range

0.0 to 14.0






Automatic 1-Point-Calibration

Temperature compensation

0 to 50 °C (automatic)

Temperature-Measuring Range

0 to 50 °C

Temperature- Resolution

0.1 °C


±0.5 °C

Power Supply

2 x Batteries Typ CR2032

IP Rating



148×29×14 mm
(with carrying case 165×95×28 mm)


49 g (with carrying case 160 g)


  • SX610 Tester
  • Calibration solutions pH 7.00
  • Storage Solution 3M KCL
  • Batteries: 2 x CR2032
  • Carrying case

CE-Certified with a 2 year warranty for the meter and 6-months for the probe.

Deutsch (SX610_DE_2018.pdf, 42 Kb) [Download]

English Manual (SX610_EN_2018.pdf, 246 Kb) [Download]

The Apera Instruments SX615 Replacement Probe is the replacement probe for SX610 pH Pen Testers. This replacement probe is equipped with a glass bulb...