ASTM E1095-99(2022)
(Specification)Standard Specification for Common Laboratory Glass Funnels
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.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
- Status
- Published
- Publication Date
- 31-Dec-2021
- Technical Committee
- E41 - Laboratory Apparatus
- Drafting Committee
- E41.01 - Laboratory Ware and Supplies
Relations
- Effective Date
- 01-Feb-2024
- Effective Date
- 01-Jul-2019
- Effective Date
- 01-Jan-2018
- Effective Date
- 01-Nov-2013
- Effective Date
- 01-Dec-2011
- Effective Date
- 01-Dec-2011
- Effective Date
- 01-Dec-2011
- Effective Date
- 01-Sep-2010
- Effective Date
- 15-May-2010
- Effective Date
- 01-Apr-2010
- Effective Date
- 01-Nov-2008
- Effective Date
- 01-Nov-2006
- Effective Date
- 01-Nov-2006
- Effective Date
- 01-Oct-2005
- Effective Date
- 01-May-2004
Overview
ASTM E1095-99(2022), titled Standard Specification for Common Laboratory Glass Funnels, is a globally recognized ASTM standard addressing the requirements for glass funnels used in laboratories. This specification ensures quality and performance for a variety of laboratory glass funnels, including both filter funnels and filling or powder funnels. The standard supports the consistent manufacturing, classification, and usage of laboratory glassware, contributing to safety and efficiency in laboratory environments.
The scope of ASTM E1095-99(2022) covers general laboratory glass funnels, detailing their material, dimensional, and design requirements, and aligns with international standardization principles as endorsed by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Key Topics
Types and Classes of Funnels
ASTM E1095-99(2022) classifies laboratory glass funnels into four main types, each designed for different applications:- Type 1: Common laboratory funnels with a smooth inner surface, further divided into:
- Class A – Short stem
- Class B – Long stem
- Class C – Without stem
- Type 2: Laboratory funnels with a fluted inner wall (grooved design), divided into:
- Class A – Short stem
- Class B – Long stem
- Type 3: Ribbed inner wall funnels with raised ribs extending from the rim toward the stem, also divided into Class A and B.
- Type 4: Filling or powder funnels with short, wide-diameter stems for rapid transfer of powders or granules.
- Type 1: Common laboratory funnels with a smooth inner surface, further divided into:
Material and Thermal Performance
Funnels must be manufactured from laboratory-grade glass meeting ASTM E438 specifications and must conform to maximum permissible thermal residual stress requirements per ASTM E671.Dimensional and Design Criteria
The standard specifies dimensions for funnel body, stem length, diameter, and wall thickness, ensuring compatibility and interchangeability in laboratory settings. Each funnel must have a securely sealed bowl and stem, and designs must prevent flow restrictions during use.Marking and Identification
Each funnel must be permanently marked with the manufacturer's name or trademark, ensuring traceability and quality assurance.
Applications
ASTM E1095-99(2022) laboratory glass funnels are widely used for:
- General Liquid Transfer: Ensuring safe and accurate pouring of liquids into containers with narrow openings.
- Filtration: Used with filter paper to separate solids from liquids in analytical and preparative laboratory procedures.
- Powder and Granular Transfers: Type 4 funnels specifically facilitate the handling and decanting of powders and granules without spillage.
- Sample Preparation: Essential in analytical laboratories, clinical labs, research institutions, and educational laboratory environments for preparing samples and reagents.
The standard supports laboratory glassware procurement and quality control processes by providing requirements for performance, design, and packaging. Laboratories, manufacturers, and suppliers rely on ASTM E1095-99(2022) to ensure compatibility, safety, and durability of glass funnels in scientific workflows.
Related Standards
For organizations seeking comprehensive laboratory glassware management, these related ASTM standards are frequently referenced alongside ASTM E1095-99(2022):
- ASTM E438: Specification for Glasses in Laboratory Apparatus
- ASTM E671: Specification for Maximum Permissible Thermal Residual Stress in Annealed Glass Laboratory Apparatus
- ASTM E920: Specification for Commercially Packaged Laboratory Apparatus
- ASTM E921: Specification for Export Packaged Laboratory Apparatus
- ASTM E1133: Practice for Performance Testing of Packaged Laboratory Apparatus for United States Government Procurements
- ASTM E1157: Specification for Sampling and Testing of Reusable Laboratory Glassware
By adhering to ASTM E1095-99(2022) and related standards, laboratories can achieve reliable performance, consistent laboratory operations, and facilitate compliance with international laboratory best practices.
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Frequently Asked Questions
ASTM E1095-99(2022) is a technical specification published by ASTM International. Its full title is "Standard Specification for Common Laboratory Glass Funnels". This standard covers: 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. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM E1095-99(2022) is classified under the following ICS (International Classification for Standards) categories: 71.040.20 - Laboratory ware and related apparatus. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E1095-99(2022) has the following relationships with other standards: It is inter standard links to ASTM E438-92(2024), ASTM E920-97(2019), ASTM E438-92(2018), ASTM E920-97(2013), ASTM E438-92(2011), ASTM E1157-87(2018)e1, ASTM E1157-87(2011), ASTM E1133-86(2010), ASTM E921-97(2010), ASTM E671-98(2010), ASTM E920-97(2008), ASTM E1157-87(2006), ASTM E438-92(2006), ASTM E1133-86(2005), ASTM E671-98(2004). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E1095-99(2022) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:E1095 −99 (Reapproved 2022)
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.
1. Scope 3.1.1.1 Class A, (short stem)—Sizes 25, 35, 45, 55, 65, 75,
90, 100, 125, and 150-mm diameters.
1.1 This specification covers common laboratory or filter
3.1.1.2 Class B, (long stem)—Sizes 35, 45, 50, 55, 65, 75,
funnels, and filling or powder funnels for general laboratory
90, 100, 125, 150, 200, 250, and 300-mm diameters.
use.
3.1.1.3 Class C, (without stem)—Sizes 50, 75, and 100-mm
1.2 The values stated in SI units are to be regarded as
diameters.
standard. No other units of measurement are included in this
3.1.2 Type 2—Laboratory funnel with fluted inner wall. The
standard.
flutes are small grooves or depressions running upward from
1.3 This international standard was developed in accor-
the bottom zone of the bowl.
dance with internationally recognized principles on standard- 3.1.2.1 ClassA,(shortstem)—Sizes50,65,75,and100-mm
ization established in the Decision on Principles for the
diameters.
Development of International Standards, Guides and Recom- 3.1.2.2 Class B, (long stem)—Sizes 50, 65, 75, and 100-mm
mendations issued by the World Trade Organization Technical
diameters.
Barriers to Trade (TBT) Committee. 3.1.3 Type3—Laboratory funnel with ribbed inner wall.The
ribs are small raised protuberances running from funnel rim
2. Referenced Documents
toward the stem.
2.1 ASTM Standards:
3.1.3.1 ClassA,(shortstem)—Sizes50,65,75,and100-mm
E438 Specification for Glasses in Laboratory Apparatus 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
4. Material and Annealing
E1133 Practice for Performance Testing of Packaged Labo-
ratory Apparatus for United States Government Procure- 4.1 Material—Funnels shall be made of glass conforming to
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—Maximum residual stress shall be such as to
conform to Specification E671.
3. Classification
3.1 There shall be four types of laboratory glass funnels 5. Design
further divided into classes.
5.1 Bowl—The inner wall of the bowl shall diverge from the
3.1.1 Type1—Commonlaboratoryfunnelwithsmoothinner
stem at an angle of 30 6 1.2°. The bowl shall be securely
surface, divided into the following three classes:
sealed to the stem. The axis of the funnel bowl shall coincide
with the stem axis and the rim shall be perpendicular to this
This specification is under the jurisdiction of ASTM Committee E41 on
axis. The edge of the rim shall be mold finish, beaded or
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
ground to a horizontal surface, as specified.
Laboratory Ware and Supplies.
5.1.1 Type 1—Bowl of common funnels shall be plain.
Current edition approved Jan. 1, 2022. Published February 2022. Originally
5.1.2 Type 1, Class C—Bottom of bowl shall be ground flat.
approved in 1986. Last previous edition approved in 2016 as E1095 – 99(2016).
DOI: 10.1520/E1095-99R22.
5.1.3 Type 2—Bowl of fluted funnels shall have an inner
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
wall with 8 equally spaced small grooves or depressions that
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
shall extend upward from the inner bottom zone of the bowl ⁄2
Standards
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