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Specialized Protein Wash Solution, 500mL Bottle HI7073L

Producer: HANNA Instruments

SKU: HANNA-HI7073L Category: Hanna experimental measuring equipment

HI7073L is a special enzymatic cleaning solution that can be used in applications where the electrode must be immersed in a solution containing proteins. Electrodes can become contaminated during use and cause inaccurate readings even when measuring in standard solutions. Hanna cleaning solutions remove impurities and residues that may remain on the electrode surface when immersed in samples during measurement or when stored improperly. Hanna recommends cleaning the bulb and junction of the electrodes on a regular basis to ensure that the probe remains clean and to prevent the junction from becoming clogged.

The most common cause of measurement inaccuracies is unclean or improperly cleaned electrodes. This is important to note, as during calibration the meter will assume that the electrodes are clean and the calibration curve generated during calibration will remain a valid reference comparison until the next calibration. pH meters on the market today will allow for a voltage offset of approximately ± 60 mV. Deviation from 0 mV is unusual but ideally should not be greater than ± 30 mV. The calibration process compensates for the change in voltage offset. If the mV offset continues to drift and the meter is calibrated with a dirty electrode, inaccurate results will result.

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When measuring frequently, molecules can contaminate the electrode tip. Using the wrong solution or an expired solution can affect the results.

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The instrument can calibrate even if the electrode tip is dirty due to improper cleaning before calibration. If the solution is contaminated, the calibration will be invalid and the results will be inaccurate.

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Properly cleaning the electrode with fresh solution will ensure the electrode tip gives accurate results and more accurate calibration.

Cleaning the electrodes should be a routine practice as a preventative measure against situations that may arise when calibrating with dirty electrodes and ensuring that the junctions do not become clogged. Simply soaking the electrodes in the HI7061L cleaning solution for 15-20 minutes will dissolve any minerals or other coatings.