Laboratory Filtration
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Grade 934-AH® - Fine porosity, fast flow rate, with a 1.5µm size particle retention. This material is the standard for volatile suspended solids content and related measurements (Standard Methods 2540D and EPA Method 160.2). Also widely used in cell harvesting applications and RIA scintillation counting. Binderless borosilicate glass microfiber enables use up to 550°C. The trademark 934-AH® is owned by GE Healthcare/Whatman Inc. and used under exclusive license for purposes of private label.
Grade Quartz A High Temperature is a fine porosity binderless quartz (SiO2) glass microfiber with a 99.999% efficiency in air filtration for the retention of 2.20um particles. Effective temperature range up to 1150 °C. This media meets or exceeds the physical, performance and elemental requirements for EPA PM10, Ambient Air Monitoring methods. Flow rate 1.1 - 1.35 m3/min (Resistance 95mmH20@10.5 ft/min). Loss on ignition,
LabExact 934-AH® glass microfiber filters are produced from 100% borosilicate glass microfiber without the use of binders or strengthening agents. Fine porosity, fast flow rate with a 1.5 um size particle retention. This material is the standard for suspended solids content and related measurements (Standard Methods 2540D and EPA Method 160.2). Also widely used in cell harvesting applications and RIA scintillation counting. Binderless borosilicate glass microfiber enables use up to 550°C. Depth filtration traps particulate within the random matrix of fibers within the thickness of ...
Binder free glass microfiber used for Determination of Total Suspended Solids (Standard Method 2540 D. and EPA Method 160.2) and Volatile Suspended Solids. Features: 934-AH® Pre-washed and weighed for high heat applications >550° Washed, dried, desiccated and fired to 550°C Weighed to 4 decimal place resolution Industry standard 934-AH® glass microfiber filter, ready to use Meets requirements for use with VSS and TSS analysis Compares to Whatman RTU series, Environmental Express Pro Weigh series, Ahlstrom Munksjo 169W series
Fine porosity with a 99.999% efficiency in air filtration for the retention of 2.20µm particles. Flow rate 1.1 - 1.35 m3/min (Resistance 95mmH20@10.5 ft/min). Primarily used in air pollution monitoring, atomic absorption spectroscopy, flame emission spectrometry and other applications where an extremely critical analysis is needed. Effective temperature range of up to 1000°C. Binderless quartz microfiber