"WardsSci000518"

These funnels have large diameter stems for fast powder transfer.

PYREX®, borosilicate glass.

For filling burets. Diameter: 35 mm; total length: 60 mm; outside diameter of stem: 6 mm.

Our high-quality funnels meet ASTM standards.

The most widely used qualitative filter paper for routine applications.

Use these filters for basic separation of larger particles from solution.

This convenient system features a 90 mm Ø opening to filter faster through 0.22 μm membranes where autoclaving is not required.

Funnels are made of durable plastic. Funnels of top inner diameter 70-108 are polypropylene and autoclavable. Funnels with top inner diameter of 127 and 165 are polyethylene and not autoclavable.

The 165 mm size has a wide stem for quick transfers.

The glass filter paper is excellent for microwave testing where temperatures get very high such as for use in a food experiment where all the moisture is microwaved out to see how much solid is left behind. Withstands temperatures to 500 °C. Size of each: 11 cm diameter.

Quantitative filter papers are used for gravimetric analyses or filtrations where the precipitate is to be recovered.

The external ribbing on this funnel prevents air lock.

Qualitative Filter Paper is available in three standard grades.

With iron clamp for support rods of any size to ⁵/₈". The four holes are beveled and slotted and are spaced at 4¹/₂" center distance.

For filtering out fine precipitates when filter papers are unsuitable.