Table 1.

Brand name, filter material, pore size (µm), supplier, and product number of 47 mm membrane disc filters tested for fast filtration-based sampling of E. coli for metabolite profiling. PVDF, polyvinylidene difluoride; PTFE, polytetrafluoroethylene.

Brand Name	Filter Material	Pore Size (µm)	Supplier	Product Number
Durapore	PVDF	0.22	Sigma-Aldrich	GVWP04700
Durapore	PVDF	0.45	Sigma-Aldrich	HVLP04700
Durapore	PVDF	0.65	Sigma-Aldrich	DVPP04700
Magna Nylon Filter	Nylon	0.22	GVS Life Sciences	1213769
Nylon Net Filter	Nylon	0.45	Sigma-Aldrich	HNWP04700
Omnipore	Hydrophilic PTFE	0.20	Sigma-Aldrich	JGWP04700
Omnipore	Hydrophilic PTFE	0.45	Sigma-Aldrich	JHWP04700