Silver Membrane Filters, 3.0 Micron, 13mm - 47mm, Sterlitech

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£347.30 to £649.71

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Variation ID		Product Code	Pack Size	List Price
12722	photo_camera	45326-100	13mm x 100 Pack 45326-100	£649.71
12723	photo_camera	45332-50	25mm x 50 Pack 45332-50	£387.73
12724	photo_camera	45338-25	37mm x 25 Pack 45338-25	£347.30
12725	photo_camera	45344-25	47mm x 25 Pack 45344-25	£485.26

Silver Membrane Filters: 3.0 Micron, 13mm - 47mm

Sterlitech silver membrane filters are manufactured from 99.97% pure silver, offering exceptional chemical and thermal resistance for demanding laboratory filtration. These pure metallic membranes are ideal for aggressive fluids, high-temperature environments, and specialised analytical techniques, including x-ray diffraction (XRD) and mineral quantification.

Available in pore sizes ranging from 0.2 µm to 5.0 µm, silver membranes provide precise retention for fine particulates and are specified in NIOSH methods for the analysis of silica, lead sulfide, boron carbide, and chrysotile asbestos. Their robust structure allows for multiple cleaning cycles and reuse, making them a long-lasting solution for high-performance applications.

Key Features

Made from 99.97% pure silver for chemical and thermal durability
Retention ratings from 0.2 to 5.0 µm
Ideal for XRD and elemental analysis applications
Reusable with proper cleaning (up to 10 times)
Compliant with NIOSH standards for silica and mineral analysis
Thin, conductive, and suitable for high-temperature filtration

Exceptional Durability for Advanced Laboratory Use

Sterlitech silver membranes can withstand temperatures up to 550°C, depending on pore size, and tolerate a wide range of cleaning methods, including chemical, ignition, ultrasonic, and combination treatments. Their mechanical strength and precision retention capabilities make them ideal for gravimetric analysis, trace metal filtration, and quantitative mineral detection.

These membranes are non-fragile under proper handling and resist most chemicals except a few known reactants (e.g., nitric acid, sulfuric acid, cyanide, and acetylene). They are not recommended for EtO sterilisation, as silver acetylide formation may occur under specific gas conditions.

Storage and Shelf Life

Silver membranes have no fixed shelf life. To preserve integrity, they should be stored sealed in original packaging until use. Surface discolouration may occur over time but is cosmetic only and does not impact performance.

Applications

Sterlitech™ Silver Membranes can be used for a wide variety of industrial hygiene, OSHA and laboratory applications.

Analytical

X-ray diffraction (XRD); silver metal membranes make excellent substrates for XRD analysis - silver purity 99.97% -- smooth surface, grayish-white color; highly reflective surface; absolute surface retention; low background noise; distinct diffraction peaks.
Scanning Electron Microscopy (EM); smooth; electrically conductive; extremely thin membrane 50 µm; easy sample preparation.

Gas

Air-borne contaminants - National Institute for Occupational Safety and Health (NIOSH) - used for industrial hygiene in foundries, glass plants, quarries, mines, ceramic manufacturing - Methods using 0.45 µm, 25 mm:Respirable Combustible Dust (RCD) sampling and analysis - 0.8 µm, 25 mm, mines - measurement of diesel particulate matter, evaporated hydraulic fluids, fuel oils, and compressed air lubricants by weighing and ashing.
Dopant gases for semiconductor manufacturing.
Steam, or air sterilization, autoclavable
Venting, high temperatures

Liquid

Clarification (3.0-5.0 µm); Polishing (1.2 µm); Sterilization (0.2-0.8 µm)
Intrinsically Bacteriostatic - Silver does not allow the growth of bacteria and other microorganisms.
High-Performance Liquid Chromatography (HPLC) for a clearer; steadier baseline - may rule out interference from other sources of HPLC solvents (0.2, 0.45, and 0.8 &micor;m); tolerates high temperatures; gases and aggressive liquids -- Tetrahydrofuran (THF)

Viscous Fluid

Organic Carbon, inorganic, and suspended-sediment water - 0.45 µm, 47 mm, used by U.S. Geological Survey (USGS)
Lubrication oils for servomechanisms and precision instruments
Direct-line Applications with a Sprayer
High-purity fluids in semiconductor applications

Other Industrial

Chlorine Monitoring - Pulp and Paper Industry, disinfection; removal of tin and zinc in iron; chlorinating hydrocarbons; manufacturing synthetic rubber, plastics, pesticides, refrigerants; treating water and sewage
Electronics Industry - filter coolants, cleaning fluids, sterile air
Aircraft/Missile Fuels; critical fluids - resists alcohols, fuels, hydrocarbons, polyaromatic hydrocarbons (PAH), oils, alkalies, ethers
OSHA - coal tar pitch volatiles, 0.8 µm, 47 mm and 37 mm
Cold Sterilization (beverages, beer) - absolute particle-retention due to precise pore size
Soil and clay analysis
Fly Ash Sampling; Energy Research and Development Agency (ERDA)
Bacteria Sampling

General

Manufacturer: Sterlitech

Pore Size: 3.0

Diameter (mm): 13 - 47

Coefficient of Thermal Expansion: 18.8 x 106 per °C

Thickness: 50 µm (1.97 mil)

Sterilization: Air, Autoclave, Steam

Resistivity: 1.59 x 10-8 Ωm at 20 °C (68 °F)

Specific Heat: 0.448 cal/g at 20 °C (68 °F)

Performance by Pore Size

Pore Size^a	H2O Flow Rate^b	Air Flow Rate^c	Bubble Point^d	Max. Operating Temp.^e
0.2 µm	17	0.35	13	204°C (400°F)
0.45 µm	40	0.67	9	204°C (400°F)
0.8 µm	340	1.4	7	204°C (400°F)
1.2 µm	460	2.0	5	204°C (400°F)
3 µm	690	2.9	3	427°C (800°F)
5 µm	870	5.2	2	427°C (800°F)