HABOTEST HT631A Pen-Type pH Tester with Temperature Display

HABOTEST HT631A Pen-Type pH Tester with Temperature Display in Sri Lanka

Compact Water Quality pH Pen with 3-Point Auto Calibration for Aquariums, Pools, and Drinking Water

The HABOTEST HT631A Pen-Type pH Tester is a lightweight, portable water quality testing pen designed for quick, reliable pH and temperature measurements in aquariums, swimming pools, drinking water systems, agricultural irrigation, and sewage treatment applications. Weighing just 82 g and featuring a detachable high-sensitivity probe, HD backlit LCD, and 3-point automatic calibration, the HT631A offers professional-grade pH testing convenience at an accessible price point.

Discover our complete selection of pH Meters — portable testers, pen-type instruments, and professional pH analyzers available in Sri Lanka!

The HT631A is equipped with Automatic Temperature Compensation (ATC) across a 5–50 °C operating range, ensuring accurate pH results regardless of ambient water temperature fluctuations. Its compact ABS body and detachable probe tip allow easy cleaning and maintenance between samples, making it practical for routine multi-sample testing in field and poolside settings.

Technical Specifications

pH Range: 0.0 – 14.0 pH

pH Resolution: 0.1 pH

pH Accuracy: ±0.2 pH

Operating Temperature: 5 °C – 50 °C (41 °F – 122 °F)

ATC Range: 5 °C – 50 °C

Temperature Resolution: 0.1 °C

Temperature Accuracy: ±1 °C

Calibration: 3-point automatic calibration

Display: HD LCD with backlight

Power: 2 × 1.5V AAA batteries (not included)

Dimensions: 183 × 36 × 18 mm

Weight: 82 g

Housing Material: ABS plastic

Key Features

3-Point Auto Calibration: Covers acidic, neutral, and alkaline pH buffers for improved accuracy across the full measurement range

ATC: Automatic Temperature Compensation for consistent pH accuracy across varying water temperatures

Detachable High-Sensitivity Probe: Removable probe tip for convenient cleaning, rinsing, and maintenance between sample tests

HD Backlit LCD: Clear simultaneous pH and temperature readout in bright and dim conditions

Data Hold: Freezes stable pH and temperature readings for easy logging

Ultra-Compact Design: 82 g pen-form body for pocket portability in field sampling and poolside routines

Applications

Aquarium and fish tank routine water quality maintenance

Swimming pool and recreational water pH monitoring

Drinking water treatment and quality verification

Agricultural irrigation water pH assessment

Sewage and wastewater preliminary pH screening

Package Includes

1 × HABOTEST HT631A Pen-Type pH Tester

Detachable probe (installed)

Protective probe cap

User manual

Note: 2 × AAA batteries not included

For enhanced pH accuracy (±0.1 pH), a 0.01 pH resolution, and full IP65 weatherproof protection, consider stepping up to the VA Instruments VA1020 IP65 Pen-Type pH Meter with 3-point adjustable calibration.

Downloads

📄 Download HABOTEST HT631A Data Sheet