What are Liquid Properties? 

We define "liquid properties" as the molecular behaviors of a fluid that affect its thickness, flowability and smoothness. Our instruments deal with three of these unique properties, known in the scientific world as surface tension, consistency, and viscosity. 

Read about how consistency, surface tension and viscosity are different from one another.

Surface Tension is water's ability to "stick to itself." It's the property that makes water droplets form, and allows a paper clip to rest on the surface of a bowl of clean water. Measuring surface tension is important in the development and quality control of products such as ink, soap, detergent, pharmaceutical compounds, adhesives, and a wide range of coatings.

Consistency is a measurement of how well a product flows. It's used for testing the quality of products such as sauces, salad dressings, condiments, paints, chemicals and cosmetics.

Viscosity is a measure of the resistance of a fluid to motion under an applied force. Frequently mistaken for consistency, measuring this complex property is dependent on the type and amount of force required to make a liquid flow (think stirring or squeezing from a tube). Gathering viscosity data on a material gives manufacturers the ability to predict how the material will behave in the real world. Knowing the viscosity of a material also affects how the production and transportation processes are designed. 

Surface Tension

tensiometer

duNouy Ring Method:  Precision and DuNuoy Tensiometers.
Wilhelmy Plate Method: DY Series Automatic Tensiometers.

 

Viscosity

RM_100_Touch_Viscometer

 

Rotational Viscometers measure the torque required to turn a spindle in a sample of fluid at a known speed.

These commonly-used viscometers are capable of measuring Newtonian and Non-Newtonian Fluids in a wide viscosity range. 

Consistency

consistometer_homepage_pic_2

The Bostwick Consistometer is the preferred choice for measuring consistency and flow rate in a variety of products. 

 

Coming Soon - Contact Angle Meter

Soon to join our line of instruments for liquid properties analysis is the Smart Contact 100 contact angle meter from Excimer, Inc. 

Excimer_smart_contact_Angle

Designed to satisfy standards ASTM D724, D5725 and D5946, ISO 15989 and JIS R3257, the meter provides one-touch operation for the measurement of contact angles. Test for wettability, hydrophilic and cleanliness evaluation with this high-performance meter, available at a reasonable cost. 

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