ASTM E1189-87(1996)

Standard Specification for Micro-Burets (Koch Style)

SCOPE
1.1 This specification covers two styles of glass microburets of the "Koch" type for general laboratory use.

General Information

• Status: Historical
• Publication Date: 09-Nov-2000
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaced By: ASTM E1189-00 - Standard Specification for Micro-Burets (Koch Style)
• Effective Date: 10-Nov-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E 1189 – 87 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Micro-Burets (Koch Style)
This standard is issued under the fixed designation E 1189; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.3 Joints and Stoppers—All joints and stoppers shall
comply with the requirements of Specifications E 675, E 676
1.1 This specification covers two styles of glass micro-
or E 677.
burets of the “Koch” type for general laboratory use.
3.4 Graduation—The graduated section shall be in compli-
2. Referenced Documents ance with Pattern I of Specification E 694.
2.1 ASTM Standards:
4. Design
E 438 Specification for Glasses in Laboratory Apparatus
4.1 Style I:
E 542 Practice for Calibration of Volumetric Apparatus
4.1.1 Style I shall be in compliance with Table 1 and Fig. 1.
E 675 Specification for Interchangeable Taper-Ground
4.1.2 This style shall be equipped with a detachable tip with
Stopcocks and Stoppers
either a 7/25 joint or a SJ 12/5 joint.
E 676 Specification for Interchangeable Taper-Ground
4.1.3 Reservoir and graduated section shall be secured to
Joints
each other to cushion against breakage during transit and in
E 677 Specification for Interchangeable Spherical Ground
use. Typical arrangements are a cork spacer and tape or a glass
Joints
bridge.
E 694 Specification for Laboratory Glass Volumetric Appa-
4.2 Style II:
ratus
4.2.1 Style II shall be in compliance with Table 2 and Fig.
E 911 Specification for Glass Stopcocks with Polytetrafluo-
2.
roethylene (PTFE) Plugs
4.2.2 This style shall be equipped with a detachable tip of
3. General Requirements
noble metals (platinum or platinum alloys) sealed to glass in a
form commonly designated as Shohl-Type.
3.1 Material—Burets shall be made from Type I, Class A or
4.2.3 Reservoir section shall be separate from graduated
B glass as specified in Specification E 438.
section with connection made by a SJ 12/5 spherical ground
3.2 Stopcocks—Both burets shall
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