• Bubble point measurement only

• Quick and easy determination of the bubble point

• For pore sizes down to 0.1 µm

The POROLUX™ BP is a bubble point tester, used to measure the largest pore size – often referred to as ‘bubble point (BP)’ – in media that are used for filtration and separation applications.

Key Features:

• Quick, accurate and reproducible results

POROLUX™ BP, our bubble point test equipment, delivers quick and accurate results of the bubble point in the pressure range from 0 bar (0 psi) up to 5 bar (75 psi) and detects pores from ca. 300 μm down to 0.13 μm.

Thanks to its simplified operation, the POROLUX™  BP provides highly reproducible results for both the BP x-ml and BP dPL bubble point. This makes the POROLUX™  BP a clear choice for quality control and/or R&D in many companies producing filtration and separation media.

• Full automatic detection of Bubble point

The ASTM F-316-03 standard defines the BP as ‘the pressure at which the first continuous stream of gas bubbles is detected’.

While this is based on visual detection, the POROLUX™ BP now offers a fully automated bubble point testing.

• Detection of both BP x-ml and BP dPL

The POROLUX™ BP can detect both the BP x-ml and BP dPL bubble point. The BP dPL is the bubble point measured as a deviation from the linearity of a user-defined pressure increase, while BP x-ml is the bubble point measured at a user-defined flow rate.

It is evident that the dPL bubble point generates highly reproducible measurements with correspondingly low scatter. The dPL bubble point is typically very accurate. However, at high pressures, the dPL bubble point can be falsely created by turbulence. In this case, we advise using the BP x-ml.

The instrument determines the bubble point by using digital pressure and flow sensors. In this way, the chance of a human error or the subjective operator’s opinion is eliminated. This helps to standardize the filter media testing in terms of consistency and reliability.

Technical Specifications:

(1) Depending on the wetting liquid.

(*) BP x-ml is the bubble point measured at a user-defined flow rate. BP dPL is the bubble point measured as a deviation from the linearity of a user-defined pressure increase.