Description
Take the guesswork out of water testing with the Hanna Instruments HI98129, the industry-standard “Combo” tester. Engineered for professionals in hydroponics, aquaculture, water treatment, and laboratory research, this 4-in-1 pocket meter provides highly accurate readings for pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature—all in one rugged, waterproof device. The All-In-One Solution Stop switching between multiple meters. The HI98129 streamlines your routine by delivering four critical measurements at the push of a button. Its compact, lightweight design fits comfortably in your pocket, making it the perfect companion for field work or moving between tanks and vats. Key Features 4-in-1 Versatility: Simultaneously measures pH, EC (low range), TDS, and Temperature. Fully Waterproof & Floating: Designed to withstand humid environments and accidental drops; the housing is completely sealed and is engineered to float if dropped in water. Replaceable pH Electrode: Features the HI73127 replaceable electrode cartridge. The sturdy snap-in connector means there are no pins to bend or break, and you can replace the sensor rather than the entire meter once it reaches the end of its life. Renewable Cloth Junction: Extend the life of your pH probe by simply pulling out 1/8” of the cloth junction to expose a fresh surface, instantly clearing clogs and restoring response time. Graphite EC/TDS Probe: Unlike steel probes, the graphite sensor resists contamination from salt deposits in the solution, ensuring long-term accuracy and minimal maintenance. Advanced Automation: Automatic Calibration: 1 or 2-point pH calibration and 1-point EC/TDS calibration. Automatic Temperature Compensation (ATC): All readings are adjusted for temperature fluctuations, ensuring precision regardless of environmental conditions. Selectable Conversion Factors: Customize your TDS conversion factor (0.45 to 1.00) and temperature coefficient (β) to match your specific application. Technical Specifications Measurement Range Resolution Accuracy pH 0.00 to 14.00 pH 0.01 pH ±0.05 pH EC 0 to 3999 µS/cm 1 µS/cm ±2% F.S. TDS 0 to 2000 ppm 1 ppm ±2% F.S. Temperature 0.0 to 60.0°C / 32.0 to 140.0°F 0.1°C / 0.1°F ±0.5°C / ±1.0°F Battery Life: Approx. 100 hours of continuous use (4 x 1.5V batteries included). Auto-Off: Preserves battery life by shutting down after 8 minutes of non-use. Dimensions: 163 x 40 x 26 mm (6.4 x 1.6 x 1.0″) Weight: 100 g (3.5 oz.) What’s Included? HI98129 Combo Tester HI73127 pH Electrode (Installed) HI73128 Electrode Removal Tool Protective Cap Batteries (4 x 1.5V) Instruction Manual Starter Calibration Kit: pH 4.01 & 7.01 buffer sachets, 1413 µS/cm conductivity sachet, and electrode storage solution. Why choose the HI98129? Trusted by growers and water quality professionals worldwide, the HI98129 offers a level of precision and durability that cheap imports cannot match. With its replaceable sensors and renewable junction, this meter is a long-term investment in your water quality management.
