Specialty Glass Micro Fiber

A-83:  This is a binderless, ultra high efficiency particulate filter material demonstrating >1µm retention.  It is especially suited to applications requiring a very high degree of efficiency.  The absence of organic binder and fungicide makes this grade eminently suitable for chromatography and analytical filtration.

B-85:  This is a binderless, high efficiency (HEPA type) filter medium demonstrating retention rates of 1-2µm wit high flow rate with high capacity.  This media has been specifically designed for analytical applications and this borosilicate glass fiber media has no added extractables to aid in the elimination of sample contamination.  Excellent wet strength.  Common usage includes gravimetric analysis of air pollutants and membrane pre-filters.  Also used for testing dissolved and suspended solids in wastewater.

RG:  This laminated glass product is a high efficiency multi-purpose filter medium with good heat resistance.  Demonstrating a retention rate of 1-2µm, it is particularly recommended for both gas and liquid filtration in the medical field and for monitoring applications.  The base material consists of glass microfibers with 3-7% acrylic resin binder.  The supporting scrim is a 0.5 oz/yd2 Reemay, a high strength spun bonded polyester nonwoven.  The scrim can be applied to either side depending on the filter design.  Also, the scrim is bonded to the glass media using a polyester hot melt which has a melting point of 325° F.  This media has become the standard for monitoring the air in and around nuclear reactors and materials.

C-42:  This is a high efficiency multi-purpose filter material demonstrates retention rates of 1-2µm with very good heat resistance.  The basis weight and thickness are higher than normal to provide greater filter capacity.  This grade is recommended for applications where some depth penetration and lower plugging rates are favored over surface removal of particulates.  This material consists of borosilicate glass microfibers bonded with low amounts of acrylic resin.

E-13:  This is a medium efficiency, high capacity filter medium demonstrates retention rates of  10-13µm and is suitable for applications requiring high air porosity or rapid liquid filtration.  This grade is made from a blend of borosilicate glass microfibers, which are bonded by an acrylic resin.  It is recommended for ASHRAE applications in the efficiency range of 90-95%.