Glass & Quartz Microfiber Filters
Depth Filters for Prefiltration, Clarification of liquids and Air Monitoring
Glass & Quartz Microfiber Filters combine fast flow rates with high load capacity and retention of very fine particles. As depth filters, they retain particles on the surface of the filter and trap them in their structure as well.
Glass microfiber filters with binders are recommended for monitoring air and gas or as a prefilter. Binder-free glass microfiber filters have been manufactured for analytical and gravimetric analyses and prefiltration. Quartz microfiber filters are especially suited for emission monitoring at highest temperatures and wherever filters of the highest purity are needed.
Features of Sartorius Glass & Quartz Microfiber Filters:
- Made for tough filtration situations with 100% borosilicate glass or quartz crystalline construction
- Excellent direct or prefilters for extreme filtering workflows
- Available in multiple grades and diameters, spanning nearly all filtering equipment needs
Glass Microfiber Filters with Binder
Glass Microfiber Filters (w/ binder) are mostly used either for monitoring air and gas or as a prefilter. They are manufactured with synthetic binding agents to ensure the filter has defined strength.
- Mechanical and chemical stability
- Temperature resistant up to 180°C
- Hydrophilic or hydrophobic (depending on binding agent)
Binder-free Glass Microfiber Filters
Binder-free Glass Microfiber Filters are recommended for analytical and gravimetric analyses and as prefilters. They combine fast flow rates with high load capacity and retention of very fine particles.
- Manufactured from 100 % borosilicate glass
- Biologically inert, resistant to most chemicals
- Withstands temperatures up to 500°C (grade 550-HA up to 550°C).
Quartz Microfiber Filters
Quartz Microfiber Filters are especially suited for emission monitoring at high temperatures and wherever filters of the highest purity are needed. Sartorius Quartz Microfiber Filters are free of glass fibers and binding agents.
- Made of 100 % quartz microfiber silicium dioxide (SiO2)
- High-purity filters with the lowest trace metal values
- Extreme temperature resistance up to 900 °C
- Exceptional chemical resistance
- Excellent weight and dimensional stability
- Biologically inert
- Certificate on trace elements available for every batch of the grade Q3400
Best Selling Microfiber Filters
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Frequently Asked Questions
Glass & Quartz Microfiber Filter Frequently Asked Questions
Glass Microfiber Filters (without binder) are made of 100 % borosilicate and have a temperature resistance up to 500 °C or max. 550 °C; with binder, they have a lower temperature resistance up to 180°C.
Quartz microfiber filters manufactured with 100 % quartz (silica, SiO2) have the highest temperature resistance up to 900°C.
In terms of purity, you will get the highest purity with filters made 100 % of quartz, followed glass microfiber filters without binders. Binders increase the mechanical stability of the filter but reduce its purity.
All are depth filters: They do not have pores, as they are made of fibres with an irregular structure. Therefore, the particle retention properties are only a rough information. Different sizes of particles are retained on the surface of the filter as well as in its depth structure. They are therefore ideal for the filtration of high loaded solutions, but they cannot be used as sterile filter for which you need a defined pore size.
For prefiltration, is a depth filter made of glass microfiber fibers better than a filter paper made of cellulose or cotton linters?
Glass microfiber filters have a higher loading capacity than filter papers and are therefore better suitable as prefilters; they will not clog easily.
One side of the filter is smoother than the other one, due to manufacturing processes. Because of the irregular fiber structure of depth filters, you can use any side for filtration and obtain the same results.