Application

0.7 µm pore size, hydrophilic glass fiber, 47 mm diameter

General description

Filter Code: AP40

Overview
Millipore fibrous disc filters are available in a wide range of flow rates and throughput capacities. Our Glass Fiber filters are available with or without binder resins and can be sterilized by EO, gamma, or autoclave (121 °C at 1 bar).

Glass Fiber Filters with Binder Resin:
Millipore filters with binder resin have superior wet strength and are excellent for qualitative analysis and prefiltration, especially for heavily contaminated liquids. They are also widely used for clarification of aqueous solutions.

Type AP15
Lowest dirt-holding capacity
Recommended prefilter for 0.2 to 0.6 µm filters

Type AP20
Lower retention, higher dirt-holding capacity than AP15 filters
Recommended prefilter for 0.8 to 8.0 µm filters
Use upstream to protect type AP15 filters

Type AP25
Added thickness yields same retention and greater dirt-holding capacity as AP20
Recommended prefilter for 0.9 to 8 µm filters, especially for proteinaceous and heavily contaminated liquids
Use upstream to protect type AP15 filters

Glass Fiber Filters without Binder Resin:
The filters without binder resin retain their structural integrity without weight loss when heated up to 500 °C and can therefore be used in gravimetric analysis as well as for the filtration of hot gases.

Type APFA
Retains fine particles with good efficiency, even at high flow rates
Recommended for monitoring wastewater and collecting suspended particles in gases (e.g., fumes from chimneys)
Use in biochemical applications (e.g., collection of cells and filtration of protein or nucleic acid precipitates)

Type APFB
Higher mechanical strength when wet and greater loading capacity than type APFA filters
Use for liquid clarification, quantification of solids in suspensions of fine particles, and scintillation counting

Type APFC
Greater retention, especially for fine particulate and microorganism removal than type APFA filters
Use for determining total suspended solids in drinking water
Use for filtering proteins or nucleic acid TCA precipitates and for collecting cells and microorganisms

Type APFD
Thick filter with high flow and low retention
Use for clarifying suspensions containing particulates greater than 1.0 µm

Type APFF
Use for filtering extremely fine precipitates such as protein, nucleic acids, or serum precipitates
Recommended for USEPA method 1311 for TCLP analysis

Type AP40
Recommended for Standard Methods Total Suspended Solids 2540D
Recommended for USEPA method 1311 for TCLP analysis
Maintains structural integrity without weight loss when ignited to 550 °C (1022 °F) after sample filtration
Recommended for determining volatile suspended matter in wastewater and industrial effluents

Filter Type: Depth filter