Home > Specialties > Tensiometers

Tensiometers

Definition : Measuring instruments designed to measure the cohesive energy present at an interface; the instruments usually can measure the surface tension between a liquid and air and/or the interfacial tension between the boundaries of two liquids. Other tensiometers are intended to measure the surface tension between a liquid and a solid (also known as contact angle meters). There are several methods to measure the surface tension between a liquid and air and/or the interface tension between two liquids; the most common techniques are: (1) force tensiometers, instruments that measure by rising a ring submerged in the liquid from the liquid to the air or between the common surface of two liquids and measure the force needed to break through the surface (that is related to the surface tension). A variant of the method using a plate (that is placed but not submerged in the liquid) is also available. Force tensiometers are mainly used to determine the surface tensions or substances such as oils, detergents, and other chemicals. (2) Instruments that are based in the relationship between liquid heights in a capillary tube to the surface tension and (3) tensiometers intended to measure the surface tension between a liquid and a solid are based in the measurement of the angle between a liquid droplet and a solid surface usually employing optical techniques; they are mainly used to determine the wettability of surfaces when testing pills, surfactants, ink adhesion, and materials before coating. Some instruments employing other techniques (e.g., bubble pressure) are also used for these measurements.

Entry Terms : "Bubble Pressure-Based Surface Tension Measuring Instruments" , "Contact Angle Surface Tension Measuring Instruments" , "Do Nouy Ring-Based Surface Tension Measuring Instruments" , "Force-Based Surface Tension Measuring Instruments" , "Interface Tension Measuring Instruments" , "Plate-Based Tension Measuring Instruments" , "Ring-Based Surface Tension Measuring Instruments" , "Surface Tension Measuring Instruments" , "Wilhelmy Plate-Based Surface Tension Measuring Instruments"

UMDC code : 22569

Filters
Manufacturers
Distributors
U.S.companies only
Suppress Subsidiary Companies
   

1-2 of 2 Match(es).

Cole-Parmer Instrument Co

Company Type: Parent

Cole-Parmer has been a leading global source of laboratory and industrial fluid handling products, instrumentation, equipment, and supplies. We are proven experts in the fields of temperature measurement and control, electrochemistry, and fluid handling. Our products are sold throughout the world through company-owned customer channel outlets and a strong network of international dealers.

Norco Inc

Company Type: Parent

1-2 of 2 Match(es).

 

Medical Product Guide Ophthalmology Management Product Guide