Hanna HI981004 Pool Line Checker Plus pH Tester

Hanna HI981004 Pool Line Checker Plus pH Tester

The Hanna HI981004 Pool Line Checker Plus PH Tester is a compact, waterproof digital pH tester specifically designed for swimming pools, spas, and water treatment systems. Built on the trusted Checker Plus platform, this version is optimized for pool environments—offering reliable pH measurement, ease of use, and excellent durability. Whether you’re a pool professional or a homeowner, this tester helps maintain the right water balance for safety and comfort.

Features

• Full-Range pH Measurement
  Accurately measures from 0.00 to 14.00 pH, covering the entire pH spectrum. As a result, it’s suitable for testing everything from acidic to alkaline pool water conditions.

• High Accuracy and Resolution
  Provides a 0.01 pH resolution with an accuracy of ±0.2 pH, ideal for routine monitoring. Therefore, you can rely on it for consistent and trustworthy readings every time.

• Automatic One- or Two-Point Calibration
  Supports automatic calibration using any of the three standard buffer solutions: pH 4.01, 7.01, or 10.01. This simplifies maintenance, ensuring the tester stays accurate with minimal effort.

• Replaceable Screw-Type Electrode
  Comes with the HI1271 pH electrode featuring a screw-type connector for easy replacement. Consequently, users save money over time by only replacing the electrode rather than the entire unit.

• Long Battery Life for Continuous Use
  Powered by a single CR2032 1.5V battery, the device offers approximately 1000 hours of operation. In addition, the auto-off function helps extend battery life during idle periods.

• Lightweight, Waterproof, and Durable
  Designed for harsh poolside environments, the tester is compact, splash-resistant, and weighs just 50 g. Therefore, it’s ideal for mobile use, storage in testing kits, or bench-top monitoring.

Specifications

• pH Range: 0.00 to 14.00 pH

• pH Resolution: 0.01 pH

• pH Accuracy: ±0.2 pH

• Calibration: Automatic, 1 or 2 points with buffers at pH 4.01, 7.01, and 10.01

• Electrode: HI1271 (replaceable, screw-type connector)

• Battery Type/Life: CR2032 1.5V, approx. 1000 hours of continuous use

• Environment: 0 to 50°C; RH max 95%

• Dimensions: 50 x 174 x 21 mm

• Weight: 50 g

Applications

• Swimming Pool Maintenance
  Quickly verify pH levels to maintain proper chlorine effectiveness and swimmer comfort. As such, it helps prevent eye irritation, cloudy water, and equipment corrosion.

• Spa and Hot Tub Monitoring
  Check water balance in high-temperature systems where pH stability is critical for both comfort and disinfection.

• Water Treatment Systems
  Ensure pH remains within target ranges in systems that condition or sanitize water for domestic or commercial use.

• Residential and DIY Pool Owners
  A simple, cost-effective solution for homeowners looking to manage their pools without needing professional equipment or training.

• Pool Service Professionals
  Ideal for technicians who require a portable, reliable tool for multiple site visits or daily testing rounds.