Most advocate a 0.2 micron filter wheel that uses filters that are made from polypropylene.
I am unable to attain these filters atm and am instead going to use a 0.5 micron polypropylene water sediment filter cartridge.
Bacteria range in size from 0.2 to 2 microns in width or diameter and from 1 to 10 microns in length for the nonspherical specie,
so a 0.5 micron filter will remove most bacteria and cysts.It will be cut in to small pieces and
washed in acetone before to kill bacteria as polypropylene is
resistant to acetone and not IPA. Also dmt-fumarate is rewashed in IPA to kill bacteria.
So this is essentially the same as a filter wheel and works out to be a lot cheaper: £100 for 200 filter wheels vs £10 for 1 cartridge (200 pieces)
I assure you the DMT-fumarate has been washed excessively using the
methods found on this forum and a lot of time and effort has been put in to researching others opinions about this aswell as safety techniques before choosing this route of dimethyltryptramine administration.