SX625 Replacement pH Probe for SX620 pH Pen

0 - 14.00 pH, 0 - 50°C (32-122°F). Slim probe in design (10 mm diameter), great for test tube ph measurement. Glass bulb membrane with built-in temperature sensor. Works well for 12-24 months under proper use and care. The Apera Instruments SX625 Replacement Probe is the replacement probe for SX620 pH Pen Testers. This replacement probe is equipped with a glass bulb membrane and a built-in temperature sensor. It has a measurement range of 0 to 14.00 pH and 0 to 50°C (32-122°F). Its 10 mm diameter probe allows measurement in most test tubes, making it perfect for educational use and other common aqueous solution's pH measurement, such as hydroponics, aquaculture, pool & spas, water treatment, environmental monitoring, etc. more