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Cellulose Acetate Membrane Filters

	Composed of cellulose di- and triacetate, these filters exhibit low static charge and high strength
	May be sterilized repeatedly without loss of integrity or change in bubble point
	Extremely low aqueous extractables (0.1 wt%)
	Good resistance to heat and low molecular weight alcohols (compared to MCE membranes)
	Use for filtration of enzyme solutions, diagnostic cytology, or receptor binding studies

Magnification of Cellulose Acetate filter.

Also available as syringe filter units, see our Syringe Filter section.

Product Specifications: Cellulose Acetate Membrane Filters

Click here for chemical compatiblity information.

Pore Size (μm)	Bubble Point¹		Flow Rates²		Porosity³ (%)
Pore Size (μm)	MPa	psi	Acetone (mL/min/cm²)	Air (L/min/cm²)	Porosity³ (%)
0.20	≥0.25	≥37.1	16	2	66
0.45	≥0.17	≥25.9	35	4	68
0.80	≥0.068	≥10.0	160	14	72
3.00	≥0.034	≥5.0	500	54	78

	Wetting Time: <3 seconds to wet a φ47mm disk with aqueous 1% methylene blue
	Max. Operating Temperature: 180°C
	Thickness: 125-135μm
	Refractive Index: 1.47
	Ash Content: See below.

Notes:
1. Bubble Point is the minimum pressure required to force air through a membrane which has been prewet with water.
2. Flow Rates indicate initial flow rate at 10 psi using a KGS 47 filter holder:
Water: using prefiltered (0.1μm) water
Air: using prefiltered nitrogen
3. Porosity refers to the percent open area.

Ash Content (ppm): Cellulose Acetate Membrane Filters

Al	<5.0
Ca	36.4
Cd	<0.1

Cr	2.2
Cu	1.2
Fe	1.6

K	2.0
Li	<0.5
Mg	1.9

Mn	<0.5
Mo	<0.5
Na	5.9

Ni	<0.5
Pb	<0.5
Si	7.8

Sn	<0.5
Ti	<5.0
Zn	0.6

Ordering Information: Cellulose Acetate Membrane Filters

Choose the appropriate Pore Size and Membrane Diameter or Roll from the charts below to select a catalog number. Cellulose Acetate membrane filters are available as nonsterile, plain white disks and rolls in the packaging listed below. Product certification is available upon request.

For cellulose acetate suitable for Chromatography, inquire.

Plain White Disks

Pore Size (μm)	φ13 mm	φ25 mm	φ37 mm	φ47 mm	φ90 mm	φ142 mm	φ293 mm
Pore Size (μm)	Package of 100				Package of 25
0.20	C020A013A	C020A025A	C020A037A	C020A047A	C020A090A	C020A142A	C020A293A
0.45	C045A013A	C045A025A	C045A037A	C045A047A	C045A090A	C045A142A	C045A293A
0.80	C080A013A	C080A025A	C080A037A	C080A047A	C080A090A	C080A142A	C080A293A
3.00	C300A013A	C300A025A	C300A037A	C300A047A	C300A090A	C300A142A	C300A293A

Plain White Rolls

Pore Size (μm)	Single Roll, 33cm × 3m
0.20	C020A330R
0.45	C045A330R
0.80	C080A330R

For Complete CA Listing CLICK HERE Inquire for pricing

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