The Millicup™-FLEX filter unit provides a disposable and time saving alternative to traditional glass vacuum filtration systems. The filter unit consists of a fully recyclable polypropylene funnel and a recyclable ribbed membrane support collar suitable for most filtration applications. Its unique construction enables faster flow rates compared to glass. The Millicup™-FLEX device is compatible with a broad range of chemicals and mobile phase solvents and can be used under diverse conditions, including wide temperature and pH range.
Vacuum filtration is commonly used in methods for particulate contamination analysis and contamination monitoring. For retentate techniques such as gravimetric analysis, microscopy, or X-ray diffraction (XRD) that rely on the detection of particulate matter retained on a membrane, a flat rigid membrane support is necessary. Our 47 mm stainless steel Filter Support Screen can provide such a foundation for use with the Millicup™-FLEX filter unit.
To use the Filter Support Screen, assemble the Millicup™-FLEX filtration system according to the instructions.
The Millicup™-FLEX device and Filter Support Screen may be employed in the following methods as well as similar methods requiring the analysis of retained particulate matter:
NIOSH 7602 Quartz 47 mm, particles retained for IR
OSHA ID 191 Asbestos
ASTM D2274: Standard Test Method for Oxidation Stability of Distillate Fuel Oil (Accelerated Method)
Many regulatory methods employ 47 mm membrane filters with standard glass, vacuum filtration setups. The Millicup™-FLEX device can be substituted for these setups in most protocols that require a 47 mm borosilicate glass filter support and glass funnel as well as some that reference stainless steel screen supports. The following methods require general filtration during one or more steps of sample preparation prior to analysis. For similar methods, please be sure to consult the Chemical Compatibility of Filter Components prior to using the Millicup™-FLEX filter unit.
EPA 3200: Mercury Species Fractionation and Quantification by Microwave Assisted Extraction, SPE, or SSE:
ASTM D4382: Standard Test Method for Barium in Water, AAS Graphite Furnace
ASTM D4130: Standard Test Method for Sulfate Ion in Brackish Water, Seawater, and Brines