Display of the Filter Compatibility Chart

A filter compatibility chart is a reference tool that provides information on the chemical compatibility of different types of filter materials with various solvents, chemicals, and solutions. This chart helps users select the appropriate filter material to ensure safe and effective filtration without degrading the filter or contaminating the sample.

Filter Compatibility Chart:

Chemical/Solvent	Nylon	PTFE	PVDF	PES	CA	RC	Glass Fiber	PP	H-PTFE
Water	Excellent	Excellent	Excellent	Excellent	Good	Excellent	Excellent	Excellent	Excellent
Alcohols (e.g., Methanol, Ethanol)	Excellent	Excellent	Excellent	Excellent	Good	Excellent	Excellent	Excellent	Excellent
Acetone	Poor	Excellent	Good	Poor	Poor	Good	Excellent	Excellent	Excellent
Acetonitrile	Good	Excellent	Excellent	Good	Fair	Excellent	Excellent	Excellent	Excellent
Dimethyl Sulfoxide (DMSO)	Poor	Excellent	Excellent	Poor	Poor	Good	Excellent	Excellent	Excellent
Hexane	Good	Excellent	Excellent	Poor	Poor	Poor	Excellent	Excellent	Excellent
Toluene	Poor	Excellent	Excellent	Poor	Poor	Poor	Excellent	Excellent	Excellent
Chloroform	Poor	Excellent	Excellent	Poor	Poor	Poor	Excellent	Excellent	Excellent
Acids (e.g., HCl, HNO₃)	Good	Excellent	Excellent	Excellent	Poor	Fair	Excellent	Excellent	Excellent
Bases (e.g., NaOH, KOH)	Good	Excellent	Excellent	Excellent	Fair	Excellent	Excellent	Excellent	Excellent
Salts (e.g., NaCl)	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent
Oils	Fair	Excellent	Good	Poor	Poor	Poor	Excellent	Excellent	Excellent
Strong Acids	Limited	Excellent	Good	Limited	Poor	Good	Excellent	Excellent	Excellent
Chlorinated Solvents	Limited	Excellent	Good	Poor	Poor	Good	Excellent	Excellent	Excellent
Proteins / Biological Samples	Binding	Low binding	Low binding	Low binding	Low binding	Low binding	Adsorption	Low binding	Low binding

Common Filter Materials:

Nylon (Polyamide)
Polytetrafluoroethylene (PTFE)
Polyvinylidene Fluoride (PVDF)
Polyethersulfone (PES)
Cellulose Acetate (CA)
Regenerated Cellulose (RC)
Glass Fiber
Polypropylene (PP)
Hydrophilic Polytetrafluoroethylene (H-PTFE)

Correspondingly, Hawach provides Nylon Membrane Filters, PTFE Membrane Filters, PVDF Membrane Filters, PES Membrane Filters, CA Membrane Filters, Microporous Glass Fiber Membrane Filters, PP Membrane Filters, MCE Membrane Filters, and other membrane filters for your choice.

Best Material by Application

Application	Recommended Filters
Strong acids/bases	PTFE / PP / H-PTFE
Organic solvents (HPLC, GC)	PTFE / RC / H-PTFE
Aqueous & biological samples	PES / CA / PVDF / H-PTFE
Protein analysis	PES / PVDF / CA / H-PTFE
General purpose	Nylon / RC
Prefiltration / heavy particulates	Glass Fiber

Notes on Usage:

Excellent: The filter material is highly compatible with the solvent/chemical and can be used without significant degradation.
Good: The filter material is generally compatible, but prolonged exposure might cause slight degradation.
Fair: The filter material can be used cautiously, but performance may degrade over time.
Poor: The filter material is not recommended for use with this solvent/chemical, as it may degrade or react.

Considerations When Using the Chart:

Filter Application: Consider whether you use the filter for sterilization, clarification, particle removal, or chemical filtration, as this can impact your material choice.
Temperature: High temperatures can alter the compatibility of certain filter materials with solvents or chemicals, so it’s important to consider the operating temperature of your filtration process.
Chemical Concentration: Compatibility can vary depending on the concentration of the solvent or chemical. High concentrations might affect the filter material differently compared to lower concentrations.
Sample and Filtration Requirements: The choice of filter material should be based on the specific requirements of your application, including the chemical nature of the sample, the desired pore size, and the need for either hydrophilic or hydrophobic filters.

This chart serves as a general guide, and it’s always recommended to consult the manufacturer’s sheets for specific compatibility information, especially for critical applications.