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    อุปกรณ์วัด ISE (pH and Ammonia Kit for Wine)

    HI 4222A

    pH and Ammonia Kit for Wine
    The nitrogenous compounds of must and wine are derived from grapes and can be augmented with yeast nutrients. They play important roles in fermentation, clarification, and potential microbial instability of wines.

    The amount of ammonium ions in must influences the rapidity of fermentation start and evolution. The ammonia concentration ranges are from 24 to 209 mg/L (ppm) in grapes and from a few mg/L (ppm) to about 50 mg/L (ppm) in wine.

    The content of ammonium ions will drastically decrease during the alcoholic fermentation, then increase again, especially in red wines, at the end of the malolactic fermentation becuase the lactic bacteria release ammonia nitrogen into the wine.

    The pH of wine is important to determine because it will affect the quality of the product in terms of taste, color, oxidation, chemical stability and other factors. The general rule of pH in winemaking is the higher the pH reading, the lower amount of acidity in the wine. Three important factors in determining the pH of wine include the ratio of malic acid to tartaric acid, the amount of potassium and the total amount of acid present.


    pH  Range  -2.000 to 20.000 pH
    pH  Resolution  0.1 pH; 0.01 pH; 0.001 pH
    pH  Accuracy  ±0.1 pH; ±0.01 pH; ±0.002 pH ±1 LSD
    mV  Range   ±2000 mV
    mV  Resolution  0.1 mV
    mV  Accuracy   ±0.2 mV ±1 LSD
    ISE  Range   1 x 10-6 to 9.99 x 1010 concentration
    ISE  Resolution  1; 0.1; 0.01; 0.001 concentration
    ISE  Accuracy  ±0.5% (monovalent ions); ±1% (divalent ions)
    Temperature  Range  -20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K
    Temperature  Resolution  0.1°C; 0.1°F; 0.1K
    Temperature  Accuracy  ±0.2°C; ±0.4°F; ±0.2K (without probe)
    Calibration  pH  automatic, up to five point calibration, eight standard buffers available (1.68, 3.00, 4.01, 6.86, 7.01,9.18, 10.01, 12.45), and five custom buffers
    Calibration   ISE  automatic, up to five point calibration, 5 fixed standard solutions available for each measurement unit, and 5 user defined standards
    pH Calibration Check™  yes
    Rel. mV Offset Range  ±2000 mV
    Input Channel(s)  2 pH/ORP/ISE
    GLP  cell constant, reference temperature/coefficient, calibration points, cal time stamp
    pH Temp. Compensation  automatic or manual from -20.0 to 120.0°C/-4.0 to 248.0°/253 to 393K
    pH Electrode
    HI 1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included)
    Temperature Probe  HI 7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)
    Logging  Record  100 lots with 10,000 record/lot
    Logging  Interval  settable between 1 and max log time
    Logging  Type  automatic, log on demand, auto HOLD
    Display   240 x 320 dot-matrix color LCD with on-screen help, graphing, language selection and custom configuration
    PC Connection / Power Supply  USB and RS232 / 12 VDC adapter (included)
    Environment / Dimensions / Weight   0-50ºC (32 to 122ºF) (273 to 323K) RH max 95% non-condensing / 160 x 231 x 94 mm (6.3 x 9.1 x 3.7”) / 1.2 Kg (1.8 lbs.)


    HI 4001-00  Alkaline ISA for Ammonia ISE’s
    HI 4001-40  Ammonia Filling Solution
    HI 4001-01  0.1 M Ammonia Standard
    HI 4001-03  1000 ppm Ammonia Standard
    HI 4001-02  100 ppm Ammonia Standard
    HI 4001-45  Conditioning and Storage Solution for Ammonia ISE
    HI 7037L  Calibration Solution for % Readings (100% NaCl)
    HI 92000  Windows® Compatible Software
    HI 4000-52  Gas Sensor Membrane Cap for Ammonia
    HI 4001-51  Ammonia Membrane Kit
    HI 4000-51  Gas Sensor Replacement pH for Ammonia Sensor
    pH Calibration Solutions
    HI 7007L  7.01 pH Buffer Solution
    1 x 500 mL bottle
    HI 7004L  4.01 pH Buffer Solution
    1 x 500 mL bottle
    HI 7010L  10.01 pH Buffer Solution
    1 x 500 mL bottle
    Cleaning and Maintenance Solutions
    HI 70300L  Electrode Storage Solution
    1 x 500 mL bottle
    HI 7061L  General Purpose Cleaning Solution
    1 x 500 mL bottle

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    Klong 1, Klong Luang, Pathumthani 12120 Thailand. 

    Tel.  02-191-3928 Fax 02-191-3929

    For more information please contact 081-847-6768 (Ms. Nareerat) IDLine: @alltestkit

    E-mail :


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