Product portfolio

SEMIKI measurement solution

SoC test system Vision Camera System PCB function tester Chip loading machine Repair measuring equipment

Electronic industry measuring machine

Multi-channel data logger Standard AC/DC programmable power supply High voltage meter Insulation resistance tester Ground resistance meter Leakage current meter ESD measuring device Electrical characteristics analysis equipment Production room equipment

Force and mechanical measuring equipment

Force measuring device clamp set Force sensor Force measuring base Torque wrench Force measuring system Decibel Material thickness gauge Vibration meter Gas meter Mechanical force gauge Electronic force gauge Torque measuring machine Speed machine Device for measuring material hardness Power screwdriver

Measuring equipment for mechanical industry

Standard measuring tools Thread check conditioner Profile measuring machine Coating thickness gauge Quality testing machine Magnetic measuring device Altitude measure

Temperature and humidity measuring device

Temperature and humidity meter Substance concentration measuring device Detachable probe thermometer Infrared thermometer, thermal camera Self-recording thermometer

Optical measuring equipment

Industrial cameras Measurement microscope Digital microscope Stereo microscope Beam intensity meter Colorimeter Endoscopy equipment

Lab equipment

Industrial scales Desktop scale Technical scales Analytical balance Industrial floor scales Hanna experimental measuring equipment Clean room equipment Spectroscopy and X-Ray equipment Simulation cabinets, drying cabinets, furnaces

ORP Electrode Treatment (Reduction) Solution, 500mL HI7091L

Producer: HANNA Instruments

SKU: HANNA-HI7091L Category: Hanna experimental measuring equipment

– Solution used to treat (reduce) the ORP electrode

– Expiry date is at least 1.5 years from the date of unopened packaging.

– 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, electroplating 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 reducing 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

HI7091L
Purpose	Used to treat ORP electrodes when the electrode needs to be calibrated when the corresponding mV value of pH is lower than the table above.
Specifications	1 bottle HI7091-1 500mL and 1 bottle HI7091-2 powder
Using	1. Pour the entire contents of the HI7091-2 powder bottle (small bottle) into the HI7091-1 solution bottle (large bottle). 2. Shake well 10 times to mix. 3. Use the mixed solution within 1 month. 4. Soak the ORP electrode in the treatment solution for 15 minutes before use.
Methods of preservation	– After use, cover 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