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The poise is often used with the metric prefix centi-. A centipoise is one one-hundredth of a poise, and one millipascal-second (mPa·s) in SI units. (1 cP = 10−2 P = 10−3 Pa·s = 1 mPa·s)
Centipoise is properly abbreviated cP, but the alternative abbreviations cps, cp, and cPs are also commonly seen.
Use in laboratory
A viscometer can be used to measure centipoise.
When determining centipoise, all other fluids are calibrated to the viscosity of distilled water at STP. (in some practices, one can use the following approximation: water at approximately 70 °F (21 °C) is about one centipoise).
Thicker liquids, like honey, have higher viscosities. For example, while ethylene glycol has a viscosity of just 24 centipoise at 23 C, honey has a viscosity of 2 000 centipoise and molasses has a viscosity of 5 000 centipoise. Lard has a viscosity of 100 000 centipoise.
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- "Viscosity of Liquids", in CRC Handbook of Chemistry and Physics, 89th Edition (Internet Version 2009), David R. Lide, ed., CRC Press/Taylor and Francis, Boca Raton, FL.
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