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Frequently Asked Questions

Filter Holders and Accessories FAQ

Solvent or acid filtration is not recommended, as such use could greatly reduce the lifetime of these funnels. 

PES MF funnels can withstand multiple autoclave cycles at 121 - 123 °C (250 -253 °F) at 1.0 bar (100 kPa, 15 psi) for 15 - 20 min. Please remove the lid kits and stoppers before autoclaving. Do NOT autoclave these funnels with aluminum foil. 

Repeated used of detergents may cause polyphenyl sulfone to crack, especially those containing polyoxyethylated alkyl phenols and alcohols, anti-corrosion, or anti-scaling boiler additives. 

The membrane filter tweezers offered at https://www.sterlitech.com/stainless-steel-membrane-filter-tweezers-pad-tip-ends.html are recommended for handling membrane filters to minimize the potential for contamination and damage.  However, the tweezers are not mandatory and most membrane filters can be installed by hand. Gloves are recommended when handling membrane filters to avoid contamination with skin oils.

The small static eliminators offered at https://www.sterlitech.com/static-eliminator.html, in compliance with NRC regulations, may be disposed of in normal trash.