UltrafiltratesystemforCostarTubes(50ml)ThisisanultrafiltratesystemforusewithCostar50mltubesandMilliporefilterof0.45umand25mmdiameter.Thissystemcanbesterilizedwithgas,alcoholorultravioletlight.TheideaistokeeptheliquidsterileallthetimeandnothavetopassitfromasterilecontainertotheCostartube.Thedesignismadetobeeasilyprintedandassembledusingonlyepoxyglue.AnotherextramaterialisanO-ringof25to27mmindiameter.Instructionsforassemblyanduseareinthe"Instructions.pdf"file.3Dprint: I used these parameters.Plastic acrylonitrile butadiene styrene (ABS) of 1.75 mm diameter. Fill density 90%, thick shells, layer height 0.2, slow print speed.Assembly:

1 Placetheringinthetube.

2 Gluethecupwithepoxyglueasindicatedbythearrow(thethreeelementsform

thebody1).PlacetheO-Ring.

3 GluethestrainerontotheCap(thetwoelementsformthebody2).

ModeofUse:

1 Screwbody2ontotheCostartube.

2 Insertthefilterpaper.

3 Screwbody1tobody2.