ASTM E1095-99(2005)

Standard Specification for Common Laboratory Glass Funnels

ABSTRACT
This specification covers common laboratory or filter funnels, and filling or powder funnels for general laboratory use. The laboratory glass funnels shall be classified into four types which are divided into classes. Type 1 is common laboratory funnel with smooth inner surface which is divided into three classes: Class A with short stem, Class B with long stem, and Class C without stem. Type 2 is laboratory funnel with fluted inner wall. The flutes are small grooves or depressions running upward from the bottom zone of the bowl. This type is divided into Class A and Class B. Type 3 is laboratory funnel with ribbed inner wall. The ribs are small raised protuberances from funnel rim toward the stem. Class A and Class B funnels belong to this type. Type 4 is the last type which is filling or powder funnels. This type has short, wide diameter stem.
SCOPE
1.1 This specification covers common laboratory or filter funnels, and filling or powder funnels for general laboratory use.

General Information

• Status: Historical
• Publication Date: 30-Apr-2005
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaces: ASTM E1095-99 - Standard Specification for Common Laboratory Glass Funnels
• Effective Date: 01-May-2005
• Replaced By: ASTM E1095-99(2010) - Standard Specification for Common Laboratory Glass Funnels
• Effective Date: 01-Sep-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1095 – 99 (Reapproved 2005)
Standard Specification for
Common Laboratory Glass Funnels
This standard is issued under the fixed designation E1095; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.2.1 Class A, (short stem)—Sizes 50, 65, 75, and
100-mm diameters.
1.1 This specification covers common laboratory or filter
3.1.2.2 Class B, (long stem)—Sizes 50, 65, 75, and 100-mm
funnels, and filling or powder funnels for general laboratory
diameters.
use.
3.1.3 Type 3—Laboratory funnel with ribbed inner wall.
2. Referenced Documents The ribs are small raised protuberances running from funnel
rim toward the stem.
2.1 ASTM Standards:
3.1.3.1 Class A, (short stem)—Sizes 50, 65, 75, and
E438 Specification for Glasses in Laboratory Apparatus
100-mm diameters.
E671 Specification for Maximum Permissible Thermal Re-
3.1.3.2 Class B, (long stem)—Sizes 50, 65, 75, and 100-mm
sidual Stress in Annealed Glass Laboratory Apparatus
diameters.
E920 Specification for Commercially Packaged Laboratory
3.1.4 Type 4—Filling or powder funnels.
Apparatus
3.1.4.1 Short, Wide Diameter Stem—Sizes 60, 65, 75, 80,
E921 Specification for Export Packaged Laboratory Appa-
100, 125, and 150-mm diameters.
ratus
E1133 Practice for Performance Testing of Packaged Labo-
4. Material and Annealing
ratory Apparatus for United States Government Procure-
4.1 Material—Funnelsshallbemadeofglassconformingto
ments
the requirement of Type 1, Class A or B or Type 2 of
E1157 Specification for Sampling and Testing of Reusable
Specification E438.
Laboratory Glassware
4.2 Annealing—Maximumresidualstressshallbesuchasto
3. Classification conform to Specification E671.
3.1 There shall be four types of laboratory glass funnels
5. Design
further divided into classes.
5.1 Bowl—Theinnerwallofthebowlshalldivergefromthe
3.1.1 Type 1—Common laboratory funnel with smooth
stem at an angle of 30 6 1.2°. The bowl shall be securely
inner surface, divided into the following three classes:
sealed to the stem. The axis of the funnel bowl shall coincide
3.1.1.1 Class A, (short stem)—Sizes 25, 35, 45, 55, 65, 75,
with the stem axis and the rim shall be perpendicular to this
90, 100, 125, and 150-mm diameters.
axis. The edge of the rim shall be mold finish, beaded or
3.1.1.2 Class B, (long stem)—Sizes 35, 45, 50, 55, 65, 75,
ground to a horizontal surface, as specified.
90, 100, 125, 150, 200, 250, and 300-mm diameters.
5.1.1 Type 1—Bowl of common funnels shall be plain.
3.1.1.3 Class C, (without stem)—Sizes 50, 75, and 100-mm
5.1.2 Type 1, Class C—Bottom of bowl shall be ground flat.
diameters.
5.1.3 Type 2—Bowl of fluted funnels shall have an inner
3.1.2 Type 2—Laboratory funnel with fluted inner wall. The
wall with 8 equally spaced small grooves or depressions that
flutes are small grooves or depressions running upward from
shall extend upward from the inner bottom zone of the bowl ⁄2
the bottom zone of the bowl.
to ⁄8 times the inner bowl depth.
5.1.4 Type 3—Bowl of ribbed funnel shall have an inner
This specification is under the jurisdiction of ASTM Committee E41 on
wall with raised ribs spaced at the rim approximately 15 mm
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
apart.Alternate ribs shall extend to within approximately 6 mm
Apparatus.
Current edition approved May 1, 2005. Published October 2005. Originally of the junction of the bowl and the stem, and the others to
approved in 1986. Last previous edition approved in 1999 as E1095 – 99. DOI:
within approximately 19 mm of this junction. Ribbed funnels
10.1520/E1095-99R05.
may also have ribs on the outer bowl surface or stem, or both.
Fo
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