A vacuum capillary viscometer is a useful instrument to determine the thickness or Runniness of a liquid. Scientists and engineers can use it to learn about the flow character of diverse fluids. It’s especially handy for fields that use oil and food and chemicals. The viscometer operates by running a thin tube, called a capillary, through a vacuum. When this tube is filled with liquid it runs through the capillary. By timing how long it takes for the liquid to travel a set distance, we can learn how viscous, or sticky, the liquid is. Zonwon manufactures quality Vacuum Capillary Viscometers that are reliable and simple to operate.