Professional Pure Water TDS Tester for RO/DI, Ultrapure & Deionized Water
The Hanna HI98308 Pure Water Tester is a portable, professional-grade TDS/conductivity meter designed for accurate measurement of ultrapure, deionized, and RO/DI water from 0 to 9990 µS/cm. This pocket-sized tester delivers lab-quality results with simple operation—just immerse the probe and read TDS or conductivity on the easy-to-read LCD display. Essential for monitoring water purification systems, laboratory water quality, and aquarium RO/DI systems.
Key Features:
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Pure Water Measurement: Measures TDS (0-9990 ppm) and conductivity (0-9990 µS/cm) with ±2% accuracy—ideal for ultrapure, deionized, and RO/DI water applications
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Dual Parameter Display: Simultaneously shows TDS or conductivity plus temperature on large LCD screen
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Automatic Temperature Compensation (ATC): Built-in sensor ensures accurate readings from 32 to 122°F (0 to 50°C)
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Portable & Pocket-Sized: Compact pen design fits in your pocket for testing anywhere—perfect for field testing and on-site monitoring
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Waterproof Design: Durable construction withstands wet environments and accidental submersion
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Auto-Off Function: Conserves battery life with automatic 8-minute shutdown
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Easy Calibration: Simple one-point calibration with 1413 µS/cm solution for optimal accuracy
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Hold Function: Freezes reading on display for easy recording
Technical Specifications:
- Model: HI98308
- TDS Range: 0 to 9990 ppm (mg/L)
- Conductivity Range: 0 to 9990 µS/cm
- Resolution: 10 ppm (TDS), 10 µS/cm (EC)
- Accuracy: ±2% Full Scale
- Temperature Range: 32 to 122°F (0 to 50°C)
- Temperature Compensation: Automatic (ATC)
- Calibration: 1-point at 1413 µS/cm
- Battery: 4 x 1.5V button cell (included)
- Auto-Off: 8 minutes
- Waterproof: Yes
- Dimensions: Compact pen design
- Weight: 12 oz
- Country of Origin: Romania
- SKU: HI98308
- Barcode: 787543856485
Applications:
Essential for RO/DI water system monitoring (aquariums, laboratories), ultrapure water quality verification (pharmaceutical, semiconductor), deionized water testing (laboratories, industrial), drinking water purification system monitoring, aquarium RO/DI water production, hydroponics water quality, laboratory water quality control, environmental water testing, and any application requiring accurate pure water TDS/conductivity measurement. Perfect for aquarium hobbyists, laboratory technicians, water treatment professionals, and quality control managers.
What's Included:
- HI98308 Pure Water Tester
- 4 x 1.5V Button Cell Batteries
- Protective Cap
- User Manual
Why Test Pure Water?
Pure water testing is critical for ensuring water purification system performance. In RO/DI systems for aquariums, low TDS (typically 0-5 ppm) indicates effective filtration and safe water for sensitive fish and corals. In laboratories, ultrapure water (Type I, II, III) must meet strict conductivity specifications for analytical accuracy. In pharmaceutical and semiconductor manufacturing, deionized water quality directly affects product quality. The HI98308's wide range (0-9990 µS/cm) covers everything from ultrapure water to tap water, making it ideal for monitoring purification system performance and verifying water quality.
How to Use:
- Remove protective cap from HI98308 tester
- Immerse electrode in water sample
- Stir gently and wait for reading to stabilize
- Press HOLD button to freeze reading if desired
- Read TDS (ppm) or conductivity (µS/cm) on LCD display
- Rinse electrode with distilled water after use
Calibration & Maintenance:
For best results, calibrate regularly using Hanna MA9071 1413 µS/cm calibration solution (sold separately). Clean the electrode after each use and store with the protective cap in place. Replace batteries when low battery indicator appears. The waterproof design allows for easy cleaning and long-term durability.
Note: Calibration solution sold separately. Regular calibration recommended for optimal accuracy, especially when testing ultrapure water.
