Apera 20 Series Pocket Testers Fast and accurate parameter testing and monitoring. The Apera 20 series economy models suit a wide range of applications. Features: Easy Auto. calibration; Auto. Temp. Compensation (ATC) ensures accuracy in variant temperatures (32-122˚F) Apera’s proprietary pH sensor with low impedance greatly improves response speed Auto. recognition of stable values improves consistency so you don’t have to guess when to manually hold measurement Complete kit with ready-to-use calibration solutions, batteries, and a lanyard in a rugged carrying case Up to 2000 hours’ operation, powered by AAA batteries Specs apera 20 series tester brochure Previous Post Aqua-Tank Next Post Apera Pocket Testers