Table 1:

General Information and Key Properties of Filters

Filter Type	Vendor	Cat. No.	Lot No.	Composition	Cut-off	Porosity	Thickness	Retail Price/Filter (USD)
PTFE	ADVANTEC	H100A025A	90227640	Polytetrafluoro ethylene hydrophobic-treated	1.0 μm	UNK	35 μm	$3.33
PCTE	Sterlitech	PCT1025100	M-180227	Polycarbonate	1.0 μm	16%	11 μm	$0.96
PCTEG	Sterlitech	1270007	TPA.PC.2001.I.8	Polycarbonate 40 nm gold-coated	0.8 μm	15%	9 μm	$24.79
PSi	Smart Membranes	950789-W16	UNK	Silicon	1.0 μm	~60%	220 μm	$30.00
MSSN-Au	SiMPore	MSSN400-3L-1.0-Au	4882	Silicon nitride 120 nm gold-coated	1.1 μm	13%	0.5 μm	$30.00

Notes:

^1.Abbreviations: polytetrafluoroethylene (PTFE), polycarbonate track-etched (PCTE), polycarbonate track-etched gold-coated (PCTEG), porous silicon (PSi), microslit silicon nitride gold-coated (MSSN-Au)

^2.As of 10/19/2022, ADVANTEC Cat. No. H100A025A has been discontinued and replaced by Cat. No. T100A025A.

^3.Cut-off (i.e., pore size), thickness and porosity determined from SEM measurements for MSSN-Au; all other values as reported by vendors.

^4.Listed prices were calculated per-filter based on variable minimum order quantity as of 10/19/2022.