Check the listing for details. Apera Instruments, LLC-AI1312 Apera Instruments 201T-S pH/Temp. Electrode, 8-.... Condition: New. Listed at 107.69 USD. Brand New Apera Instruments, LLC-AI1312 Apera Instruments 201T-S pH/Temp. Electrode, 8-pin Connector, The Replacement Electrode for Apera 400/400S Series Portable Meters Manufacturer model: AI1312 Built-in temperature sensor, testing pH and temperature simultaneously, enabling Auto. Temp. CompensationApera's special lithium glass membrane ensures generate quick and stable pH readings.A detachable sensor shield is built upon the sensitive glass membrane to protect it from accidental damage.Gel KCL electrolyte adopted; No need for refilling.A unique junction composed of ceramic and fiber filament efficiently improves the problem of junction clogging. Description Apera Instruments 201T-S pH Electrode is made for general water solutions' pH measurement in scientific research, environmental monitoring, and quality control. The built-in temperature sensor allows automatic temperature compensation. Apera's special lithium glass membrane ensures low impedance and stable potentials, which helps generate quick and stable pH readings. A unique junction composed of ceramic and fiber filament efficiently improves the problem of junction clogging. A detachable sensor shield is built upon the sensitive glass membrane to protect it from accidental damage. It's the replacement pH electrode for Apera PH400, PH400S, PC400, PH400S, PH400S. Measurement Range: 014 pH, 080?C (32176?F); Housing: Polycarbonate; Junction: Single Ceramic; Reference Electrode: Ag/AgCl; Connector: 8-pin; Size: 12 160 mm; Cable: 3 Ft; Temperature unit: NTC 30K. Not suitable for testing in low-ion concentration solutions (eg: deionized water or distilled water), strong base solutions (pH>12), highly corrosive liquid, or for continuous testing in high-temperature solutions (>140F). The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system. Shipping and Handling Please allow 5-7 business days for the package to arrive, regardless of buyer location within the US. We will provide an online tracking number to you once the item has been shipped. It may take a few business days for our automated system to process the tracking number onto eBay. However, this will not affect the shipping times. Return Policy All our products are brand new and sealed. All items qualify for returns within 30 days of receipt. Feedback We take our reputation seriously. If you have any questions or concerns, please contact us and we will respond back to your message within 24 hours.