6 With a 9164 (approximately 3.57mm) Allen wrench (not supplied), loosen these set screws until
about 1/4 (6mm) of each is exposed. The sealing collar can now be lifted from the end of the funnel,
allowing the locking ring and flat Teflon gasket to be removed.
7 Inspect the gasket and the inner surface of the locking ring for injury or dirt, and clean them
thoroughly. Small particles of imbedded grit can be dislodged from the Teflon gasket without injuring
it, but the gasket should be replaced if it is damaged or badly distorted.
8 To reassemble, place the clean gasket inside the locking ring and slip the ring, open side up, over the
end of the funnel. Then replace the funnel collar and tighten its setscrews, making sure that they rest
in the groove of the funnel. When properly positioned, the end of the funnel projects approximately
1/16 (1.6mm) beyond the face of the collar.
9 Replace the Iockwheels inside the locking ring, tightening their holding screws until each wheel will
not turn. The wheels should be positioned to present smooth, round bearing surfaces to the locking
cams on the underside of the holder base. The set screws on the outside of the locking ring can now
be tightened to keep the Iockwheel holding screws from loosening during use.
10 If a flat spot develops in either Iockwheel after a period of use, both wheels should be rotated to new
positions, or replaced if necessary.
Materials Stainless funnel, base and filter support screen, anodized aluminum locking ring, nylon locking
wheels, Teflon gaskets, neoprene stopper.
Filter Size 47mm diameter
Filter Area Approximately 9.6 cm2. The filtration area of a gridded Millipore filter in this holder contains
100 grid squares.
Depth Prefilter Size 35mm diameter
Funnel Capacity 650ml
Pressures Vacuum only
Connections #8 perforated stopper placed over outlet tube mounts in standard liter filtering flask or
Millipore filtering manifolds (available separately).
Dimensions 114mm (41/2) diameter, 229mm (9) high
To obtain technical assistance, call our Technical Services Department toll-free at 800-225-1380.
In Western States 800-632-2708
In Massachusetts 617-275-9200
In Canada 800-2684881