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We have developed a unique portfolio of consumables, each adapted to the different feed water quality requirements and to your various applications. To maintain your water system’s performance, it’s critical to replace your purification cartridges on time and with genuine ISO 9001-certified parts.

Catalog No. Product Net Price
YY2214253 O-ring, 2-251, PTFE 42 
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  • Applicable Device
  • Hazardous Waste System, 142mm
  • Background Information
  • Do your waste samples contain volatile substances, such as isopropanol, acetone or xylene? Then use our ZHE (Zero Head Space Extractor) Hazardous Waste Filtration system, which is approved by the US Environmental Protection Agency (EPA) as an apparatus for Toxicity Characteristic Leaching Procedure (TCLP) measurement.The system cannot pressurize unless completely assembled; this eliminates accidentally “shooting the piston” out of the unit and assures safe operation. Choose both manual and automatic venting modes.Features & Benefits:•Allows for pressurization of filter without introducing air, due to movable piston design •Prevents loss of volatiles •Manual and automatic venting modes •System cannot be pressurized unless completely assembled, thereby preventing "shooting the piston" out of the unit accidentally Applications:US EPA Extraction Procedure (EP) Toxicity Test and Toxicity Characteristic Leaching ProcedureHazardous Waste SystemYT30090HW Millipore ZHE Hazardous Waste System Replacement Parts XX2702512 2-way Valve, 1/8 in. NPTM, stainless steel XX6700010 Cylinder O-rings 3 XX6700024 Vent/Relief Valve, 9 bar XX6700104 Street Elbow, 1/4 in. NPTF to M YT3009001 Piston with O-rings, wiper seal YT3009002 Fitting Luer 1/8 in. NPTF YT3009003 Piston O-rings, wiper seal YT3009013 Quick-disconnect Female Swagelok YT3009014 Quick-disconnect Male Swagelok YY2209064 Support Screen 90 mm, stainless steel YY2209068 O-ring, 2-235, 90 mm, fluoroelastomer YY2214257 Hand Knob Accessories XX6700P05 Dispensing Pressure Vessel, 5 L YT3009015 ZHE Tight Syringe, 50ml YT3009016 ZHE Tedlar Bag, 1 liter Connector Kit Components XX3002567 Adapter, 1/8 in. NPTF to M Luer-Lok, chrome plated XX6700024 Vent/Relief Valve, 9 bar XX6700030 Quick-release Nipple & Coupling, 1/4 in. NPTM XX6700125 Hex Nipple, 1/4 in. NPTM 51 mm., stainless steel XX6702507 Tube Adapter, 1/4 in. NPTM to 1/4 in. Tube XX6702508 Tubing, 6 mm O.D. x 3 m, polypropylene YT3009013 Quick-disconnect Female Swagelok YY1301015 Pressure Gauge, 0–7 bar YY2029348 Ball Valve, 1/4 in. NPTF, stainless steel
  • Catalogue Number
  • YY2214253
  • Chemistry
  • Polytetrafluoroethylene (PTFE)
  • Material Size
  • 1
SX0001301 Silicone Gaskets for 13 mm Swinnex filter holder 43 
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  • Applicable Device
  • Swinnex 13
  • Background Information
  • Make your own syringe filter! Swinnex filter holders give you the flexibility to select the membrane type and diameter that are most appropriate for your application. For sterile filtration, autoclave you Swinnex filter holders with the membrane in place. Ultraclean or sterilize small volumes of liquids dispensed by a syringe or install in-line to filter larger volumes.Features & Benefits:•Available in three sizes for a range of process volumes •Autoclavable with filter in place for sterile filtrationSX0001300 Swinnex Filter Holder, 13 mmSX0002500 Swinnex Filter Holder, 25 mmSX0004700 Swinnex Filter Holder, 47 mmReplacement PartsSX0001301 Silicone Gaskets for 13 mm Swinnex Filter HolderSX0002501 Silicone Gaskets for 25 mm Swinnex Filter HolderXX2702510 Support Screen, 25 mm, polypropyleneXX1104715 Support Screen, 47 mm, polypropyleneXX1104707 O-ring (5-329) for Swinnex 47 mm Filter Holder, siliconeSX0004701 Base O-ring for Swinnex 47 mm Filter Holder, siliconeSX00047RK Replacement Parts Kit for Swinnex 47 mm Filter Holder
  • Catalogue Number
  • SX0001301
  • Chemistry
  • Silicone (SI)
  • Material Size
  • 100
  • Maximum Operating Temperature
  • 121 °C
  • Nominal Pore Size
  • 0.5 / 0.1 µm
  • Pore Size
  • 0.5 / 0.1 µm
XX6702507 Tube Adapter, 1/4 in. NPTM to 1/4 in. Tube 45 
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  • Background Information
  • Millipore has a broad selection of fittings, adapters, valves, gauges, and tubing that can be used in conjunction with Millipore filtration systems. With stated exceptions, material of construction is Series 300 stainless steel.Tri-Clamp (TC) fittings are referred to by convention as 1 1/2", 2", etc. 1 1/2" TC fittings connect to 1" or 1 1/2" O.D. tube sizes. 2" TC fittings connect to 2" O.D. tube size only.
  • Catalogue Number
  • XX6702507
  • Diameter
  • 6.3 mm (0.25 in.) (I.D.)
  • Length
  • 183 cm
  • Material Size
  • 1
  • Materials of Construction
  • Series 300 stainless steel
  • Maximum Inlet Pressure, bar (psi)
  • 14 bar (200 psi)
XX6702508 Tubing, 6 mm O.D. x 3 m, polypropylene 45 
Add to Cart
  • Background Information
  • Do your waste samples contain volatile substances, such as isopropanol, acetone or xylene? Then use our ZHE (Zero Head Space Extractor) Hazardous Waste Filtration system, which is approved by the US Environmental Protection Agency (EPA) as an apparatus for Toxicity Characteristic Leaching Procedure (TCLP) measurement.The system cannot pressurize unless completely assembled; this eliminates accidentally “shooting the piston” out of the unit and assures safe operation. Choose both manual and automatic venting modes.Features & Benefits:•Allows for pressurization of filter without introducing air, due to movable piston design •Prevents loss of volatiles •Manual and automatic venting modes •System cannot be pressurized unless completely assembled, thereby preventing "shooting the piston" out of the unit accidentally Applications:US EPA Extraction Procedure (EP) Toxicity Test and Toxicity Characteristic Leaching ProcedureHazardous Waste SystemYT30090HW Millipore ZHE Hazardous Waste System Replacement Parts XX2702512 2-way Valve, 1/8 in. NPTM, stainless steel XX6700010 Cylinder O-rings 3 XX6700024 Vent/Relief Valve, 9 bar XX6700104 Street Elbow, 1/4 in. NPTF to M YT3009001 Piston with O-rings, wiper seal YT3009002 Fitting Luer 1/8 in. NPTF YT3009003 Piston O-rings, wiper seal YT3009013 Quick-disconnect Female Swagelok YT3009014 Quick-disconnect Male Swagelok YY2209064 Support Screen 90 mm, stainless steel YY2209068 O-ring, 2-235, 90 mm, fluoroelastomer YY2214257 Hand Knob Accessories XX6700P05 Dispensing Pressure Vessel, 5 L YT3009015 ZHE Tight Syringe, 50ml YT3009016 ZHE Tedlar Bag, 1 liter Connector Kit Components XX3002567 Adapter, 1/8 in. NPTF to M Luer-Lok, chrome plated XX6700024 Vent/Relief Valve, 9 bar XX6700030 Quick-release Nipple & Coupling, 1/4 in. NPTM XX6700125 Hex Nipple, 1/4 in. NPTM 51 mm., stainless steel XX6702507 Tube Adapter, 1/4 in. NPTM to 1/4 in. Tube XX6702508 Tubing, 6 mm O.D. x 3 m, polypropylene YT3009013 Quick-disconnect Female Swagelok YY1301015 Pressure Gauge, 0–7 bar YY2029348 Ball Valve, 1/4 in. NPTF, stainless steel
  • Catalogue Number
  • XX6702508
  • Chemistry
  • Polypropylene (PP)
  • Diameter
  • 6.3 mm (0.25 in.) (I.D.)
  • Length
  • 305 cm
  • Material Size
  • 1
  • Maximum Inlet Pressure, bar (psi)
  • 14 bar (200 psi)
  • Sterilization
  • Autoclavable
XX4304705 Hand Knobs 46 
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  • Applicable Device
  • 1-port Holder In-line
  • Background Information
  • In-Line Filter Holders are commonly use to ultraclean liquids or gases in line by pressure filtration. Simply open the housing to change the filter without disturbing the attached plumbing.Features & Benefits:•Stepped hose barb connections at both ends for easy installation •Large, easy to grip hand knobs Catalog Number Description XX4304700 In-Line Filter Holder 47 mm Replacement PartsXX1104715 Support screen, 47 mm, polypropyleneXX4304701 O-ring (2-131), siliconeXX4304704 Hose adapter, 1/4 in. NPTF to 5/16 in. ID, polypropyleneXX4304705 Hand KnobsAccessoriesXX4304702 O-ring, (2-131), fluoroelastomer XX4304707 Stainless Steel Support Screen, 47 mmXX6200006P Filter forceps, blunt end, stainless steelXX6700034 3 meters PVC tubing with 9.5 mm internal diameter
  • Catalogue Number
  • XX4304705
  • Diameter
  • References Product Information Applicable Device
  • Material Size
  • 3
  • Materials of Construction
  • Nylon
XX4304705 Hand Knobs 46 
Add to Cart
  • Applicable Device
  • 1-port Holder In-line
  • Background Information
  • In-Line Filter Holders are commonly use to ultraclean liquids or gases in line by pressure filtration. Simply open the housing to change the filter without disturbing the attached plumbing.Features & Benefits:•Stepped hose barb connections at both ends for easy installation •Large, easy to grip hand knobs Catalog Number Description XX4304700 In-Line Filter Holder 47 mm Replacement PartsXX1104715 Support screen, 47 mm, polypropyleneXX4304701 O-ring (2-131), siliconeXX4304704 Hose adapter, 1/4 in. NPTF to 5/16 in. ID, polypropyleneXX4304705 Hand KnobsAccessoriesXX4304702 O-ring, (2-131), fluoroelastomer XX4304707 Stainless Steel Support Screen, 47 mmXX6200006P Filter forceps, blunt end, stainless steelXX6700034 3 meters PVC tubing with 9.5 mm internal diameter
  • Catalogue Number
  • XX4304705
  • Diameter
  • References Product Information Applicable Device
  • Material Size
  • 3
  • Materials of Construction
  • Nylon
XX4404703 Back-pressure Screen, 47 mm, stainless steel 48 
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  • Applicable Device
  • Stainless Steel Filter Holder
  • Background Information
  • Applications:In-Line Stainless Steel Filter Holders are commonly used for the filtration of gases or liquids at inlet pressures of 20 to 700 bar. Differential pressure depends on filter type used. All filter holders may be autoclaved (available in 25 mm and 47 mm).Filter holder XX4404700 is equipped with a back-pressure support screen. It may be autoclaved with filter in-place, if PTFE-coated support screens, XX4404702 and XX4404704, are used. - XX4204709, XX4304701, XX4404703, 5614, and 00907P are replacement parts for Filter Holder XX4404700.Filter holder XX4504700 may be equipped with an upstream filter support screen, XX4504704, for back-pressure protection of filter.- XX4504704, XX4504705, XX4504710, XX4504713, and XX45047RK are replacement parts for Filter Holder XX4504700.Replacement parts for the 25mm SS Filter Holder are available as a kit under Catalog Number XX45025RK, which includes: (3) stainless steel hex-cap screws, (3) LCR-treated Buna-N O-rings (2-018), (1) stainless steel support screen, (1) Allen™ wrench.
  • Catalogue Number
  • XX4404703
  • Diameter
  • 47 mm
  • Material Size
  • 1
  • Materials of Construction
  • Stainless steel
LSWP03700 Mitex Membrane Filter 335 
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  • Air Flow Rate
  • 9 L/min x cm²
  • Background Information
  • Mitex™ PTFE Membrane is unaffected by almost all liquids, including organic solvents, concentrated acids and bases, propellants, and cryogenic fluids. Mitex™ membrane is unbacked, yet is easy to handle, combining the convenience of a backed membrane with the versatility of a pure PTFE membrane. Mitex™ membrane is hydrophobic.Features & Benefits:•Broad chemical compatibility •Biologically and chemically inert •Stable at temperatures in excess of 260 °C (500 °F) and below -100 °C (-148 °F)* Applications:Clarifying Acids, Bases, and Cryogenic Fluids; Clarifying Propellants; Analyzing Hydraulic Fluids; Isolating RNA
  • Catalogue Number
  • LSWP03700
  • Chemistry
  • Hydrophobic Polytetrafluoroethylene (PTFE)
  • Filter Code
  • LSWP
  • Filter Color
  • White
  • Filter Diameter (⌀)
  • 37 mm
  • Filter Surface
  • Plain
  • Flow Rate
  • 9 L/min x cm²
  • Material Size
  • 100 pack, Monitor Refills with thin pads, PTFE membrane, 37 mm, 5.0 µm
  • Maximum Operating Temperature
  • 260◦C; curling may occur at temperatures above 60◦C
  • Media
  • Mitex®
  • Pore Size
  • 5.0 µm
  • Porosity %
  • 60%
  • Regulated Test Method Number
  • NIOSH 5013
  • Thickness
  • 170 µm
  • Trade Name
  • Mitex
  • Wettability
  • Hydrophobic
LSWP04700 Mitex Membrane Filter 353 
Add to Cart
  • Air Flow Rate
  • 9 L/min x cm²
  • Background Information
  • Mitex™ PTFE Membrane is unaffected by almost all liquids, including organic solvents, concentrated acids and bases, propellants, and cryogenic fluids. Mitex™ membrane is unbacked, yet is easy to handle, combining the convenience of a backed membrane with the versatility of a pure PTFE membrane. Mitex™ membrane is hydrophobic.Features & Benefits:•Broad chemical compatibility •Biologically and chemically inert •Stable at temperatures in excess of 260 °C (500 °F) and below -100 °C (-148 °F)* Applications:Clarifying Acids, Bases, and Cryogenic Fluids; Clarifying Propellants; Analyzing Hydraulic Fluids; Isolating RNA
  • Catalogue Number
  • LSWP04700
  • Chemistry
  • Hydrophobic Polytetrafluoroethylene (PTFE)
  • Filter Code
  • LSWP
  • Filter Color
  • White
  • Filter Diameter (⌀)
  • 47 mm
  • Filter Surface
  • Plain
  • Filter Type
  • Screen filter
  • Flow Rate
  • 9 L/min x cm²
  • Material Size
  • 100 pack, PTFE, hydrophobic, 5.0 µm, 47 mm, white, plain
  • Maximum Operating Temperature
  • 260◦C; curling may occur at temperatures above 60◦C
  • Media
  • Mitex®
  • Pore Size
  • 5.0 µm
  • Porosity %
  • 60%
  • Thickness
  • 170 µm
  • Trade Name
  • Mitex
  • Wettability
  • Hydrophobic
LSWP04700 Mitex Membrane Filter 353 
Add to Cart
  • Air Flow Rate
  • 9 L/min x cm²
  • Background Information
  • Mitex™ PTFE Membrane is unaffected by almost all liquids, including organic solvents, concentrated acids and bases, propellants, and cryogenic fluids. Mitex™ membrane is unbacked, yet is easy to handle, combining the convenience of a backed membrane with the versatility of a pure PTFE membrane. Mitex™ membrane is hydrophobic.Features & Benefits:•Broad chemical compatibility •Biologically and chemically inert •Stable at temperatures in excess of 260 °C (500 °F) and below -100 °C (-148 °F)* Applications:Clarifying Acids, Bases, and Cryogenic Fluids; Clarifying Propellants; Analyzing Hydraulic Fluids; Isolating RNA
  • Catalogue Number
  • LSWP04700
  • Chemistry
  • Hydrophobic Polytetrafluoroethylene (PTFE)
  • Filter Code
  • LSWP
  • Filter Color
  • White
  • Filter Diameter (⌀)
  • 47 mm
  • Filter Surface
  • Plain
  • Filter Type
  • Screen filter
  • Flow Rate
  • 9 L/min x cm²
  • Material Size
  • 100 pack, PTFE, hydrophobic, 5.0 µm, 47 mm, white, plain
  • Maximum Operating Temperature
  • 260◦C; curling may occur at temperatures above 60◦C
  • Media
  • Mitex®
  • Pore Size
  • 5.0 µm
  • Porosity %
  • 60%
  • Thickness
  • 170 µm
  • Trade Name
  • Mitex
  • Wettability
  • Hydrophobic

Overview

Analytical Sample Preparation Membrane Filtration Devices


Trust Merck membrane filtration devices for the collection and preparation of samples, mobile phases, and buffers to obtain the highest quality results from downstream analysis.


Whether you need to collect, separate, or remove contaminants from air or fluid samples prior to downstream analysis, our broad selection of syringe filters, membranes, filter holders and related filtration devices ensures that we have the right solution for your application.


Filter Membranes

Millex® Syringe Filters

Filtration Holders & Accessories



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