HI 222 Wine pH andTemperature
Bench Meter
·Features HANNA ’s CalibrationCheck™·Electrode condition on LCD display·Computer compatible
In the process of wine making, most pH measurements are made in the must. A pH electrode gets dirty rapidly when measuring the pH of must because sediments deposit on the pH measuring
industrial bulb and on the pH electrode junction. This becomes a big problem during the actual pH measurement, and even after, if the electrode has not been properly cleaned. Simply, a dirty pH electrode can give results that are up to 0.5 pH inaccurate — even after a pH calibration has just been performed.
Knowing when to clean pH electrodes
Conventional
ph meters do not warn the user when the pH electrode is dirty. A common example of thisoccurs just after calibrating the instrument — the pH electrode is immersed into the pH 7 buffer and the
reading is lower than expected (pH 6.8 or 6.9 instead of 7.0). HI 222 uses HANNA’s unique technology to detect
when the electrode is dirty and gives a warning during calibration.
Cleaning pH electrodes
It is of the utmost importance to properly clean the pH electrode prior to use. A proper cleaning of the
electrode must be done with appropriate cleaning solutions in order to remove all the deposits on the sensitive bulb and junction. HI 70635 (wine deposits removal) and HI 70636 (wine stain removal) are tailoredmade cleaning solutions that remove all deposits from your pH electrode and will guarantee your measurements are always accurate and your pH electrode will last a long time. HANNA is the only manufactur-
er to offer tailor made cleaning solutions for winemaking.
Calibration Check™ Features
::Calibration messages ::Electrode condition on LCD display During calibration, the user is warned if one or more parameters are not suitable to perform an accurate calibration. Determined from the electrode offset and slope. ::Electrode response time on LCD display Determined from electrode performance during calibration. ::Calibration alarm time out Can be programmed from 1 to 7 days or can be disabled.
Ordering information
HI 222 is supplied complete with HI 1048P CPS™ glass-body combination pH electrode with 1 m cable, HI 7669/2W stainless steel
temperature probe, HI 76404 electrode holder, pH 3.00 and pH 7.01 calibration solutions for wine calibration, wine stains and deposits cleaning solutions, storage solution, 12V DC adapter,
quick reference card for pH in wine analysis and instruction manual.
5
LIMITEDWARRANTY
year
4 HANNA instruments®
Wine TestingCatalog