The HI 4521 is a dual-channel pH, electro-conductivity (EC), resistivity, Total Dissolved Solids (TDS), salinity, temperature and oxidation reduction potential (ORP) bench meter with a 240 x 320 dot-matrix backlit color screen.
The meter features Hanna’s Cal-Check function to ensure proper calibration, an out-of-range warning system, and calibration at up to five points, with eight memorized buffer solutions (pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 pH) and five custom buffers. The meter can log up to 10 lots with 5000 samples per lot, and has a USB connection for downloading data to Windows. Temperature compensation is manual or automatic temperature, and all features are available in English, Italian, French, or Spanish.
pH range is -2.0 to 20.0; -2.00 to 20.00; -2.000 to 20.000 pH and temperature range is - 0.0 to 120.0 degrees C. The meter can also be used with ORP, salinity, TDS and resistivity probes (purchases separately). Dimensions are 159 x 230 x 93 mm (6.3 x 9.1 x 3.7"), with weight 800 g (1.8 lbs).
pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists.
Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including the world’s first pH electrode with a built-in temperature sensor, electronic pocket-sized pH tester, and replaceable electrode pH pocket tester. To ensure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.
What’s in the Box?
- 4-ring EC probe
- Glass body pH electrode
- Temperature probe
- pH 4 and 7 buffer solutions (20 mL each)
- Electrode refilling solution
- 12VDC power adapter
- Instruction manual