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BSD- PB Series Membrane Pore Size Analyzer

The PB Membrane Pore Size Analyzer utilizes the gas-liquid or liquid liquid displacement method (bubble pressure method) to accurately measure the pore size characteristics of membrane materials. By applying a pressure difference across the membrane, the system overcomes the surface tension of the infiltration liquid, driving it through the pores to determine pore throat sizes. This method is the standard for ASTM thin film pore size testing.The analyzer is widely used for pore size analysis in materials such as filter membranes, fiber membranes, filter elements, battery separators, fabrics, non-woven fabrics, paper, ceramics, sintered metals, rocks, concrete, and more.

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Key Feature

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0.012 µm to 500 µm

Precise pore size measurement using the gas-liquid displacement method.

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Bubble Pressure Method

Through-Hole Aperture:** ASTM-compliant method for measuring film pore sizes.

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Vacuum-Assisted Wetting

Fast, efficient sample infiltration that improves wetting efficiency and simplifies operation.

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Dual Pressure Sensors

Segmented pressure measurement with complementary ranges for enhanced accuracy.

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Dual Flow Sensors

Segmented flow measurement with automatic program switching for optimal performance.

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Versatile Sample Pool

Adapts to various membrane sizes and types for flexible testing.

Specifications

ModelBSD-PBBSD-PBB
Function:Pore size distribution, average pore size, most probable pore size, minimum pore size, bubble point pore size (maximum pore size), bubble point pressure, wet film flow-pressure curve (wet curve), dry film flow-pressure curve (dry curve), gas permeability, gas flux, liquid permeability (liquid-liquid method function), liquid flux (liquid-liquid method function)
Sample TypesFlat filter membranes (such as battery separators, carbon paper, non-woven fabrics, filter paper, flat ceramic membranes, flat metal sintered membranes), hollow fiber membranes, tubular membranes, etc.
Pore Size Range0.012um~500um0.12um~500um 
MethodGas Liquid DisplacementGas Liquid Displacement
Pressure Control0~500PSI 0~50 PSI
Accuracy±0.02PSI±0.002 PSI
Gas FLowrate0~1L/min (±0.5ml/min)+0~1L/min (±0.5ml/min)+
0-200L/min (±0.1L/min)；0-200L/min (±0.1L/min)；
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Vacuum Wetting Device

Best’s original fully automatic vacuum wetting device is seamlessly integrated with the host system, featuring a quick-opening and closing mechanism. For difficult-to-wet materials, this device efficiently and rapidly wets samples, enhancing wetting performance and simplifying operation.

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Highly Adaptable Sample Pool

The sample pool accommodates a wide range of sizes and types, allowing testing of both circular and hollow fiber membranes without the need for multiple pools. This versatility reduces the need for additional equipment and streamlines testing.

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High Sealing Design Side Air Intake

Equipped with a built-in side-wall air intake system, the sample pool pressurizes the membrane from the top, ensuring effective and uniform gas distribution. This design facilitates easy installation and disassembly, while maintaining optimal airtightness for reliable testing.

Other Feature

The system features all-stainless steel pipelines with metal hard seals, ensuring excellent sealing performance, high pressure resistance, and superior corrosion resistance for long-lasting reliability and durability.

Equipped with dual pressure and flow sensors, the system provides segmented measurement for both parameters. The complementary measurement ranges and automatic switching enhance test accuracy and performance, ensuring precise results.

The system operates with full automation and intelligent control, requiring no manual supervision. It includes real-time, clear voice prompts for intuitive operation, making it user-friendly and easy to manage.

The system records detailed operation logs with second-by-second accuracy. All experimental data is fully traceable, ensuring complete and reliable documentation of each test.

Typical Cases & Paper Citation

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Constructing Scalable Superhydrophobic Membranes for Ultrafast Water-Oil Separation

Xi Quan Cheng, Yang Jiao, Zekun Sun, Xiaobin Yang, Zhongjun Chong Qing Bai, Yingie ZhangKai Wang, and Lu Shao

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TiO₂ @HNTs Robustly Decorated PVDF Membrane Prepared by a | Bioinspired Accurate-Deposition Strategy for Complex Corrosive | Wastewater Treatment.

Jingcheng Wu, Yi He,* Liang Zhou, Xiangying Yin, Liyun Zhang, Jingyu Chen, Zhenyu Li, and Yang Bai

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Ultralong Hydroxyapatite Nanowire-Based Filter Paper for High-Performance Water Purification

Based on the bubble point method, the pore size distribution of theHAPNW/CF filter paper in the wet state was measured with a poresize analyzer (3H-2000PB, China).

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