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  • Hanna Instruments HI 4221 Single Channel pH/mV/Temperature Benchtop Meter, with Dot Matrix LCD
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Hanna Instruments HI 4221 Single Channel pH/mV/Temperature Benchtop Meter, with Dot Matrix LCD


Available from these sellers.
1 new from $1,732.69

Specifications for this item
Brand Name Hanna Instruments
Part Number HI 4221-01
Number of Items 1
Inside Depth 6.3  inches
Item Weight 1.8 pounds
Measurement Type pH , Oxidation Reduction Potential (ORP) , Ion Selective Electrode (ISE) , Resistivity , Salinity
Size Single Channel
Style Name Benchtop
UNSPSC Code 42181904

The HI 4221 is a micro-processor-based pH, mV, and temperature bench meter. The meter ... Read full product description


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Product Features

  • Five-point calibration with five custom and eight memorized buffers, for ease of use
  • Backlit 240 by 320 dot-matrix color screen for readability
  • Can store up to 10 lots, with 5000 samples per lot until data can be downloaded
  • USB and RS232 for downloading data to Windows
  • Cal-Check function to prevent erroneous readings

Product Details

User Manual [2.22mb PDF]

Product Description

The HI 4221 is a micro-processor-based pH, mV, and temperature bench meter.

The meter features a large backlit 240 x 320 dot-matrix color screen, automatic temperature compensation (ATC) or manual compensation, an outside of calibration range warning, and the Hanna Cal-Check function to assure the device is properly calibrated. Calibration is automatic, up to five-point, with five custom and eight standard buffers (1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and an on-screen step-by-step calibration tutorial.

The meter follows good laboratory practices and captures calibration information, buffer values, and expiration date alongside logged data. All features are available in English, Italian, French, and Spanish languages.

pH range is -2.0 to 20.0; -2.00 to 20.00; -2.000 to 20.000 pH (+ or - 0.1: 0.01 pH; 0.002 pH) with resolution 0.1; 0.01; 0.001 pH. Temperature range is – 20.0 to 120.0 degrees C + or - 0.2 degrees C with a resolution of 0.1 degrees C. ORP range is + or - 2000 with accuracy + or - 0.2 mV, and resolution 0.1 mV. Power supply is a 12 VDC adapter. Dimensions are 159 x 230 x 93 mm (6.3 x 9.1 x 3.7") with weight 800 g (1.8 lb.).

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?

  • Glass body pH electrode
  • Temperature probe
  • 12 VDC adapter
  • pH 4 and pH 7 buffer solutions
  • Electrode refilling solution
  • Electrode holder
  • Instructions


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