Technologies

Glass Fiber

Binder-free borosilicate glass fiber for high-performance applications

Glass Fiber Innovation Expert

Porex glass fiber filtration media offers a versatile solution with a wide range of particle retention sizes and thicknesses. While it is widely recognized for its applications in clinical, life science, and medical products, its utility extends beyond these domains. Serving as effective depth filters, Porex glass fiber media is engineered to handle substantial sample volumes and challenging solutions without encountering premature clogging or compromising flow rates, without the need for binders.

Porex’s commitment to stringent purity standards makes our porous glass fiber media suitable for various applications from life sciences to industrial filters. These applications include but are not limited to spin columns, assay plates, and purification kits. Whether in the lab, clinical settings, or other industries.

Glass Fiber as seen through a microscope

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Manufacturing process for glass fiber filters

Made in the USA, Porex glass fiber media production involves advanced techniques that transform pure borosilicate glass into high-quality filtration material without using binders. The process starts with the glass fibers in a fluffy state, followed by a weak acid treatment. This process helps break down the glass fibers and ensures they are uniformly dispersed in the solution. Although the acid treatment may slightly etch the surface of the particles, it is necessary for achieving homogeneity. Finally, a rinsing step with the appropriate chemical can be added to produce fiber with different chemistries.

Options for customizing glass fiber

Physical properties

When designing a glass fiber media component, it’s critical to understand these key physical material properties:

Particle retention: the nominal particle size with a retention level of 98% of the total number of particles initially challenging the filter
Nominal weight: the density of the media expressed in grams per square meter
Liquid Flow rate: the time in seconds to flow 100ml of distilled water through a 10 cm² with an average head pressure of 10cm

Understanding typical material properties will guide you in selecting the right glass fiber for your device’s function and operating conditions. Below is a chart that shows common materials with their physical properties; however, this is not an exhaustive list.

Grade	Part Number	Nominal Weight (g/m²)	Liquid Flow Rate (s/100mL/10cm²)	Nominal Particle Retention Rating(μm)	Maximum Temperature (C)
B	102301	86.11	315.00	1.00	500
D	111020	123.15	54.00	2.70	500
F	108643	71.54	347.00	0.71	500

Material Options

Glass fiber filtration media features an array of characteristics that make it an ideal material for a variety of uses from gas absorption filters to spin columns.

Binder free
Porex glass fiber is binder free, ensuring your analysis is free from interference or catalytic decomposition.

High loading capacity

The high loading or absorptive capacity allows Porex’s glass fiber to absorb more of the target gas or liquid for long-lasting applications.

Customizable Options Available

Available in a broad range of particle retention and geometric sizes, our material science experts can help select the best material options for your product needs.

Geometric Options

Glass fiber can be manufactured into a variety of geometries. Our engineers work with you to better understand your manufacturing process to determine the best size, shape, and dimension you need. Typical geometric options include:

Sheets
Discs
Die-cut 2d shapes

Additive Options

Glass fiber can be manufactured with a variety of additives and treatments that expand the design possibilities of your product. For glass fiber filters, various compounds can be loaded to target specific gases. Below are some examples of additives:

Silica powder
Metal oxides
VOCs and alcohols
Activated Carbon

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Intro to Porous Fiber

Common applications for glass fiber

Filter

Glass fiber is versatile filtration media, proving effective as a pre-filter and in applications demanding high operating temperatures. Its adaptability makes it a reliable choice for various filtration needs, ensuring efficient performance in diverse conditions.

Wick

Demonstrating remarkable effectiveness in wicking, capillary forces enable fluid transfer with ease in numerous applications. This quality makes it a reliable choice for diverse scenarios where efficient fluid movement is essential.