Hirsch's funnel
Date1850-1900
Inventory Number3856
ClassificationLaboratory Equipment
Subject
Maker
American
?
Cultural Region
Dimensions13.2 x 6.6 x 6.6 cm (5 3/16 x 2 5/8 x 2 5/8 in.)
Material
DescriptionA rather small metal funnel with a straight cylindrical section above the inverted cone.
Signedunsigned
FunctionHirsch funnels are used in vacuum filtration, where the substances to be filtered are placed on filtering paper inside the funnel. The receiving vessel below is connected to a vacuum pump forcing the substance through the paper into the funnel leaving any solids behind.
American
Date: early 20th-mid 20th Century
Accessories: paper in spout
Object number: 1997-1-1421
American
Date: 1850-1900
Accessories: rectangular wooden box with removable lid
Object number: 1997-1-0810
