Celltreat® Centrifugal Filters

Celltreat® Centrifugal Filters are engineered for fast, efficient, and reliable sample processing in laboratory workflows. Featuring PES membranes with multiple molecular weight cut-off (MWCO) options, these filters are ideal for applications such as sample concentration, purification, and buffer exchange.

The innovative dual vertical membrane design maximizes active surface area, enabling high-performance filtration with excellent sample recovery.

Applications include sample concentration, molecule purification, protein fractionation, buffer exchange, and desalting.

Main Attributes

• PES membranes available in 5, 10, 30, 50, or 100 kDa MWCO options
• Large active membrane area with dual vertical design for faster processing
• Internal supports securely position the filter cartridge within the centrifuge tube
• Cartridge design helps prevent accidental over-concentration
• High sample recovery (>90%)
• Clearly labeled MWCO (Daltons) on each cartridge for easy identification
• Bold, easy-to-read printed graduations on both tube and filter cartridge
• Large white marking area for clear sample labeling
• Flat surface HDPE caps with integrated polyethylene liners for a leak-proof seal
• Molded graduations in the conical bottom for small volume measurement
• Compatible with standard centrifuge tube rotors
• Operating temperature range: 0ºC to 40ºC

RephiQuik 0.22 uM Syringe Filters

PTFE, PVDF, PES & Nylon Membranes – Non-Sterile.

RephiQuik 0.22 uM Non-sterile Syringe Filters are precision-engineered for fine filtration and sterilization of aqueous, organic, or protein-based solutions in laboratory workflows. Designed for high performance with low extractables, these filters feature four membrane options—PTFE, PVDF, PES, and Nylon—to meet the diverse needs of analytical and research applications.

Each filter is constructed with a durable polypropylene (PP) housing and includes a female luer-lock inlet with a male luer-slip outlet for secure, leak-free operation. The 0.22 uM pore size enables efficient removal of bacteria and fine particulates, ensuring clarity, sterility, and protection of downstream systems such as HPLC instruments and cell cultures.

The filters offer a large effective filtration area with minimal hold-up volume, ensuring maximum recovery of precious samples. The membrane type and pore size are clearly printed on each unit, and color-coded housings provide quick visual identification: blue (PTFE), yellow (PVDF), green (PES), and purple (Nylon).

Membrane Options & Applications

• PTFE (Polytetrafluoroethylene)
• Hydrophobic membrane for highly aggressive solvents, strong acids, and gases. Excellent for chemical compatibility in HPLC and air filtration.
• PVDF (Polyvinylidene fluoride)
• Hydrophilic, low protein binding. Ideal for filtration of protein solutions, biological samples, and molecular biology workflows.
• PES (Polyethersulfone)
• Hydrophilic with asymmetric structure for rapid filtration of aqueous and slightly organic solutions. Optimized for cell culture and sterilization of buffers.
• Nylon
• Hydrophilic, chemically resistant to a wide range of solvents including ACN, DMF, and DMSO. Suitable for aqueous and organic sample filtration. 

Key Features

• Pore Size: 0.22 uM – ideal for sterilizing filtration
• Diameters Available: 13 mm (for up to 10 mL samples) and 32 mm (for up to 100 mL samples)
• Maximum Operating Pressure: 10 bar (145 psi)
• Low hold-up volume with high flow rate
• Leak-proof design for consistent results
• Color-coded for easy membrane identification
• Clearly labeled with membrane type and pore size
• Non-sterile – ready for general lab use and pre-sterilization protocols

Specifications

Diameters	13 mm	32 mm
Effective Filtration Area	0.80 cm2	4.4 cm2
Length, Inlet to outlet	21 mm	26 mm
Housing material	Polypropylene (PP)	Polypropylene (PP)
Inlet Fittings	Female Luer-Lok	Female Luer-Lok
Outlet Fittings	Male Luer slip	Male Luer slip
Process Vol.	1 to 10 mL	10 to 100 mL
Max. Operating Pressure	10 bar (145 psi)	10 bar (145 psi)
Max. Operating Temp.	45ºC	45ºC

 

RephiQuik 0.45 uM Syringe Filters

PTFE, PVDF, PES & Nylon Membranes - Non-sterile.

RephiQuik 0.45 uM Non-sterile Syringe Filters are designed for fast, reliable filtration of aqueous, organic, or protein-based solutions in laboratory settings. Available with PTFE, PVDF, PES, and Nylon membranes, these syringe filters provide broad chemical compatibility, high flow rates, and low extractables—making them ideal for a wide range of filtration applications, including sample preparation, HPLC, and protein purification

Each filter features a high-quality polypropylene (PP) housing and a secure female luer-lock inlet with a male luer-slip outlet. The filters offer a large effective filtration area with minimal hold-up volume, ensuring maximum recovery of precious samples. The membrane type and pore size are clearly printed on each unit, and color-coded housings provide quick visual identification: blue (PTFE), yellow (PVDF), green (PES), and purple (Nylon).

With a consistent pore size of 0.45 uM, these filters support efficient removal of particles and microbes, enabling improved sample clarity and system protection.

Membrane Options & Applications

• PTFE (Polytetrafluoroethylene)
• Hydrophobic, ideal for aggressive organic solvents, acids, and gases. Excellent chemical resistance.
• PVDF (Polyvinylidene fluoride)
• Hydrophilic, low protein binding. Best for protein solutions, biological samples, and DNA/RNA filtration.
• PES (Polyethersulfone)
• Hydrophilic, asymmetric structure for fast flow rates. Recommended for aqueous and slightly organic samples.
• Nylon
• Hydrophilic with broad chemical compatibility. Suitable for both aqueous and organic solvents, including ACN, DMF, and DMSO.

Key Features

• Pore Size: 0.45 uM
• Diameters Available: 13 mm (up to 10 mL samples) and 32 mm (up to 100 mL samples)
• Maximum Operating Pressure: 10 bar (145 psi)
• Low hold-up volume with high throughput
• Leak-proof design to protect downstream analysis
• Color-coded housings for easy identification
• Clearly labeled with pore size and membrane type
• Non-sterile – designed for general laboratory use

Specifications

Diameters	13 mm	32 mm
Effective Filtration Area	0.80 cm2	4.4 cm2
Length, Inlet to outlet	21 mm	26 mm
Housing material	Polypropylene (PP)	Polypropylene (PP)
Inlet Fittings	Female Luer-Lok	Female Luer-Lok
Outlet Fittings	Male Luer slip	Male Luer slip
Process Vol.	1 to 10 mL	10 to 100 mL
Max. Operating Pressure	10 bar (145 psi)	10 bar (145 psi)
Max. Operating Temp.	45ºC	45ºC

 

RephiQuik 50 mm PTFE Filter

Hydrophobic Vent Filter for Sterile Gas and Organic Solution Filtration.

The RephiQuik 50 mm PTFE Filter is a high-performance, ready-to-connect venting filter engineered with a hydrophobic PTFE membrane. Designed for use in lab and biopharma environments, this filter ensures safe and sterile air or gas flow, effectively preventing contamination.

Ideal for fermenter air sterilization and incubator gas filtration, the RephiQuik PTFE filter offers exceptional chemical resistance, making it perfectly suited for handling aggressive organic solutions. It can also be used between a pump and a receiving vessel to protect valves and pump components from damage caused by aqueous solutions.

Key Features

• Hydrophobic PTFE membrane supported by high-density polyethylene (HDPE)
• Durable polypropylene housing
• 50 mm diameter for optimized flow
• Excellent chemical compatibility
• Allows free passage of air and gases while blocking aqueous solutions and aerosols
• Equipped with ¼ In. single hose barb connections on both ends
• Autoclavable for repeated sterile use

Applications

• Sterile filtration of fermenter air
• Incubator gas filtration
• Filtration of aggressive organic solvents
• Pump and component protection in fluid systems 

Specifications
 

Diameters	50 mm
Housing material	Polypropylene (PP)
Filter Media material	PTFE
Inlet / Outlet Connections	1/4 In. Hose Barb
Pore Size	0.22 uM

Syringe Filters - 13mm and 30mm

Argos Syringe Filters are ideal for filtering culture media and organic solvents in a wide range of applications. All items are tested for filter efficiency and housing integrity. The filter housing is manufactured and tested to withstand pressures of up to 75 PSI. Membrane materials include PES, PVDF, MCE, Nylon, and PTFE. Filters are individually wrapped and certified non-pyrogenic and RNase/DNase free.

• Available in 13 or 30 mm diameters
  
• Choice of .45 um or .22 um pore size
• Designed for low hold-up to minimize sample loss
• Lot numbers are printed on sterile packs for easy traceability
• Packaged in a convenient, peel-open package
  
• Certified non-pryogenic & gamma irradiated

Specifications:

(Please call for part numbers and pricing on filters w/ MCE, PTFE, or Nylon membranes)

Sentino® Microbiology Pump

Pall® Laboratory Manifold

A unique microbiology manifold that allows you to optimize testing without sacrificing cleanliness. With interchangeable components and coupling devices, the manifold takes direction from you.

• No more “dirty” manifolds: Microbial cross contamination of your sample is a thing of the past. The manifold is designed to fit most laboratory autoclaves by separating into manageable components.

• Double testing capacity: A larger manifold is at your reach with just a coupler. Modular design allows two manifolds to combine yielding a standard 6-place manifold which can be easily separated for disinfection and/or sterilization.

• Manifolds that adapt to you: Whether you are right or left-handed, setting up your test workflow is second nature. The components interchangeable and designed with a simple slip fit to the manifold.

Applications

Bioburden testing of filterable products is performed to determine the number of viable and reproducible microorganisms. By recovering organisms on and in a membrane filter, processing efficiency and the microbial quality of a sample can be evaluated to assure that the product is not harmful to the intended recipient.

Detecting spoilage microorganisms are critical for foods and beverages as they may be responsible for the deterioration of sensory qualities (visual, texture, and taste) and may potentially render the product harmful for consumption. Using membrane filtration, detection of these spoilage microorganisms keep contaminated items from reaching the market.