Oxidation Reduction Potential measured in millivolts that indicates the potential of the active sanitizer in the water to Oxidize organic matter.

a measurement of the state of the oxidizing power of pool water containing chlorine or bromine. Requires the use of a electronic meter and special electrodes, a minimum of 650 MV (millivolts) is considered ideal, Pool or spa that has the recommended levels of free chlorine or bromine and the optimum pH, should have an acceptable ORP. As the pH falls, the ORP rises, making reliance of this test alone a somewhat impractical matter. It is useful as a supplement to the standard water analysis tests. Click here for some ordering information about ORP PockeTesters.

An abbreviation for oxidation reduction re- duction potential. It is a measurement of a body of water's ability to oxidize contaminants. Measured with an electrode and an electronic meter. It is an indication of the sanitizing level or degree of safety from disease in the water. Measured in millivolts with the accepted minimum level being 650 mV (millivolt).

Optional Retirement Plan. A defined contribution pension plan. Faculty and select A&P employees may elect either the FRS or ORP plan option. Each pay period, the employer contributes a percentage of earnings into an annuity. Vesting is immediate and the retirement benefit is based on the amount of funds contributed, the investment earnings of those funds and the type of annuity selected.

Optional Retirement Program (for the State University System)

Optional Retirement Plan, move toward privatization of the Wisconsin Retirement System

Organic Refining Process. Acid Degumming enhanced by using large amounts of citric acid solution. As a result, residual amount of phosphatides in oil is very low, making process suitable for Physical Refining. Other main benefit is that heaby phase from separator can e decanted into free oil, gums and acid solution. The oil is recovered, the acid solution recycled and the gums sent to further processing. Process was developed by AgProcessing and patented by IPH, USA.

Office of River Protection (formerly Tank Waste Remediation System [TWRS])

objective rally point

ocean reception point