Pour point measurement

What is the pour point?

The pour point of a product is the minimum temperature at which it still flows. This quantity is mainly used for so-called “heavy” fluids such as diesel fuel, oils, lubricants, etc. The objective is often to know if pumping the fluid is feasible.

How to measure the pour point?

Several more or less empirical methods are commonly used to measure the pour point. One method used is to invert vials of fluid at lower and lower temperatures until the fluid no longer flows. At each step, you must wait for the temperature to stabilize, and repeat the operation every 3°C or so. This method is very slow, and relatively difficult to reproduce.

Calnesis has developed its own measurement method, which is both faster and more reliable. It allows precise measurements to ± 1°C, and down to -125°C. Several measurements are taken for each fluid to ensure a reliable result. The figure shows the type of results obtained for this type of measurement.

Why choose Calnesis to measure your pour points?

The accuracy of the measurements is greater than the measurements usually made for this quantity (+/- 1°C)

Examples of results obtained

For this type of measurement, we provide you with a table of results with all the tests carried out.