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Treatment Solution (Oxidation) for ORP Electrode, 500mL HI7092L

Producer: HANNA Instruments

SKU: HANNA-HI7092L Category: Hanna experimental measuring equipment

– Solution used to treat (oxidize) the ORP electrode

– Expiry date is at least 1 year from the date of unopened lid.

– Expiry date 1 month from date of opening

ORP (Oxidation Reduction Potential) electrodes are used to measure chemical reactions in which one species is being oxidized and another species is being reduced. The loss of electrons by an element or compound is called an oxidation reaction while the gain of electrons by an element or compound is called a reduction reaction. For example, plating companies have hexavalent chromium (Cr⁶⁺) in their wastewater must reduce it to the trivalent chromium form (Cr³⁺) safer. This reduction reaction occurs in the presence of a strong reducing agent such as sodium metabisulfite. The addition of the reducing agent must be measured with an ORP electrode to ensure that adequate reduction potential is present. Using the HI7091L reduction pretreatment solution prior to taking the measurement provides a faster response time in a reducing environment.

To use, soak the ORP electrode in the treatment solution for 15 minutes before use. As a general rule, if the mV value corresponding to the pH measurement is lower than the value in the table below the reduction treatment solution (HI7091) is used. If the mV reading corresponding to the pH measurement is higher than the value in the table below, an oxidation treatment solution (HI7092) should be used.

pH	mV	pH	mV	pH	mV	pH	mV	pH	mV
0	990	3	800	6	640	9	460	12	280
1	920	4	740	7	580	10	400	13	220
2	860	5	680	8	520	11	340	14	160

HI7092L
Purpose	Used to treat (oxidize) ORP electrodes when the electrode needs calibration. when the corresponding mV value of pH is higher than the table above
Specifications	1 bottle 500mL
Using	Soak the ORP electrode in the treatment solution for 15 minutes before use.
Methods of preservation	– After use, close the lid and store at room temperature, away from direct sunlight. – Do not dilute or add any chemicals to the solution. – Always use fresh solution for each calibration – ABSOLUTELY do not pour used solution back into the bottle.
Used for measuring machines	Any ORP electrode
Certificate of Analysis (COA)	Are not
MSDS	Have
Guarantee	Are not