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Hanna Instruments – HI98103 Checker® pH Tester with 0.1 pH Resolution

The Checker® HI98103 from Hanna Instruments is a compact and reliable pH tester designed for simple, accurate measurements in laboratories, classrooms, and field applications. As the successor to the original Checker introduced in 1991, it has become one of the most widely used pH testers worldwide. With a measurement range of 0.0 to 14.0 pH, 0.1 pH resolution, and ± 0.2 pH accuracy, this lightweight tester features automatic two-point calibration and a replaceable electrode for extended usability.

  • One-Button Operation
  • Replaceable HI1271 pH Electrode
  • ± 0.2 pH Accuracy
  • Long Battery Life (Approx. 1000 Hours)

Description

The HI98103 Checker® pH Tester is engineered for users who require a straightforward and dependable solution for pH measurement. Covering a full range from 0.0 to 14.0 pH with 0.1 pH resolution, it delivers consistent results with ± 0.2 pH accuracy. Its one-button operation simplifies testing procedures, making it ideal for students, researchers, and professionals alike. The large LCD screen clearly displays readings along with stability indicators, low-battery warnings, and calibration tags for added convenience.

Designed for long-term use, the tester includes a replaceable HI1271 gel-filled pH electrode with a screw-type connector, allowing easy maintenance and extended product lifespan. Automatic recognition of standard buffer solutions enables quick one- or two-point calibration. With selectable automatic shut-off settings and an impressive battery life of approximately 1000 hours, the HI98103 offers dependable performance in a compact and lightweight design suitable for daily pH testing tasks.

Features

  • One-Button Operation – Simple and intuitive design for quick and easy pH measurement.
  • Replaceable HI1271 pH Electrode – Gel-filled electrode with screw-type connector for extended product life.
  • Large LCD Display – Shows stability indicator, low-battery indicator, and calibration tags.
  • Automatic Calibration – One- or two-point calibration with automatic recognition of standard buffers.
  • Automatic Shut-Off – User-selectable settings (8 minutes, 60 minutes, or disabled) to conserve battery life.
  • Long Battery Life – Approximately 1000 hours of continuous use with CR2032 battery.

Specifications

SKU HI98103
Product Name Checker® pH Tester with 0.1 pH Resolution – HI98103
Quote Required Yes
pH Range 0.0 to 14.0 pH
pH Resolution 0.1 pH
pH Accuracy ± 0.2 pH
pH Calibration Automatic, two points
pH Electrode HI1271 pH electrode with screw type connector (included)
Automatic Shut-Off 8 minutes, 60 minutes, or can be disabled
Battery Type/Life 1.5V CR2032 (1) / approximately 1000 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 50 x 174 x 21 mm (2 x 6.8 x 0.9”)
Weight 50 g (1.8 oz.)
Ordering Information HI98103 Checker is supplied with HI1271 pH electrode, HI70004 pH 4.01 buffer solution sachets (2 x 20 mL), HI70007 pH 7.01 buffer solution sachets (2 x 20 mL), HI700601 electrode cleaning solution sachets (2 x 20 mL), instruction manual, instrument quality certificate and plastic carrying case.

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