Gas/liquid flux fully functional membrane pore size analyzer

Gas/liquid flux fully functional membrane pore size analyzer

BSD-PBL gas-liquid method+liquid-liquid method fully functional membrane pore size analyzer

Product Overview:

◆ Bubble pressure

Wet film flow pressure curve (wet curve)

◆ Bubble point aperture (maximum aperture)

Dry film flow pressure curve (dry curve)

◆ Minimum aperture

◆ Gas permeability

◆ Average pore size

◆ Gas flux

What is the most probable aperture size

◆ Integrity evaluation

◆ Aperture distribution

Fiber membrane rupture pressure

Liquid permeability (liquid-liquid method function)

Liquid flux (liquid-liquid method function)

Gas liquid displacement (bubble pressure method): Apply pressure difference on both sides of the membrane to overcome the surface tension of the wetting solution in the membrane pores, drive the wetting solution through the pores, and obtain the pore size data of the through-hole throat of the membrane material. This method is also the standard method for ASTM thin film determination.

Liquid liquid displacement method: After immersing the tested filter material in the infiltrating solution, a liquid that is immiscible with the infiltrating solution is used as the displacement solution to displace the infiltrating solution out of the through-hole; The pore size data of the filter material can be obtained based on the Washburn formula using liquid flow rate and pressure data. Due to the fact that the interfacial tension between liquid and liquid is much lower than that between gas and liquid, compared to the gas-liquid displacement method (bubble pressure method), the liquid-liquid displacement method can test filter materials with smaller pore sizes.

Scope of application

Throat testing of through holes in materials such as filter membranes, fiber membranes, filter cartridges, battery separators, fabrics, non-woven fabrics, paper, ceramics, sintered metals, rocks, and concrete.

Technical Parameters

Aperture testing range: Standard model: 0.012um-200um, (gas-liquid method); Large pore model: 0.12um-200um, (gas-liquid method); 5-50nm (liquid-liquid method);

◆ Diverse product pool design for different sizes of samples, special samples can be designed separately;

Equipped with a fully automatic vacuum lubrication device, it can greatly accelerate the soaking time and improve testing efficiency by more than 50%;

According to the different samples to be tested, multiple infiltration liquids can be selected (specialized infiltration liquid BSD16 or other infiltration liquids);

High precision dual flow sensors, segmented flow measurement, complementary range, automatic switching;

High precision dual pressure sensors, segmented pressure testing, program automatic judgment, automatic switching;

◆ All stainless steel pipeline, metal hard seal, good sealing performance, high pressure resistance, and corrosion resistance;

Detailed instrument operation log display and recording, accurate to seconds, with traceable experimental records throughout the entire process

Gas/liquid flux fully functional membrane pore size analyzer

Technical Advantages

◆ Vacuum lubrication device: BeishideThe fully automatic vacuum lubrication device integrated with the host has a fast opening and closing structure. For materials that are difficult to wet, vacuum lubrication can be used to quickly and efficiently wet the sample, improve the wetting efficiency, and facilitate operation.

◆ Multiple sample holder selection: It can adapt to various sizes and types of sample pools, and can test films of different diameters without the need for multiple sample pools. That is, a single sample pool can test both circular and hollow fiber membranes.