To measure viscosity under a high shear rate Cone and Plate viscometers are available. The viscometer product line can measure viscosity from a near water-like viscosity to a very high viscosity range for epoxy, sealants, and paste. For laboratory viscosity measurement BYK-Gardner offers a comprehensive line of rotational viscometers. For liquids with viscosities which vary with flow. For non-Newtonian liquids a digital viscometer that applies a precise shear rate is needed. A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. To measure the absolute viscosity a rotational viscometer is used. They are ideal for production control, field inspection, or laboratory use. All of these viscometers are easy to use and are reasonably priced.
The bubble viscometer is also included in the kinematic viscosity category.
The most common viscometers are the flow cups that include Zahn cup, Ford Cup, ISO Cup, and DIN cup. A kinematic viscometer does not apply a shear force to measure the viscosity. Please contact your Scott4U engineer for additional information.BYK-Gardner offers many choices to measure the kinematic viscosity of coatings, resins, and ink. Typical Newtonian fluids are water and thin lubricating oils. While we are pleased to offer this testing please be aware that it is usually completed within 1 to 2 weeks, which will add time to the normal quotation process. Fluids that behave according to Equation 1 are called Newtonian. The viscosity information along with application details (desired flow rates, suction and discharge piping length/diameter, temperature, etc.) will ensure that we have properly sized a Watson-Marlow pump for the application. Southwest Research Institute offers viscosity testing services in several different ways using a viscometer, which offers highly accurate and repeatable. Additional samples can be tested but there will be a charge for each submission.
The first sample, per customer, will be free of charge. We offer specialized viscosity testing services for various ASTM and SAE J300 tests as well as custom method development. We anticipate this program is not to be used for every application, but as a way of engineering to work with our customers when there are questions about the product and which solution should be provided. Watson-Marlow now offers viscosity testing on customer supplied samples which will allow us to recommend the perfect products for every application. The testing of starch for viscosity has been considered a not be changed. Most products are shear-thinning and this can sometimes lead to the misapplication of a pump. more, among starches of the same kind, uniformity with re- viscosity test. Watson-Marlow pumps are designed to pump viscous products with ease but not every customer knows the actual viscosity of their product. For our design of the droplet microfluidic viscometer, the volume of the fluid sample required for testing the fluid viscosity is on the order of nanoliters. This is like testing blood pressure with a cuff and only being able to measure a single value for systolic blood pressure, instead of both systolic and diastolic. Introducing Viscosity Testing for Customer Products do test the viscosity of whole blood but are only able to measure high shear viscosity (at a shear rate of 90 s-1). Plug the information you have obtained into the formula for viscosity: viscosity 2(p s-p l)ga 2/9v where p s is the density of the sphere, p l is the density of the liquid, g is acceleration due to gravity (a fixed value of 9.8 m/s 2), a is the radius of the sphere, and v is the velocity of the sphere.