ASTM E1092-91(1996)

Standard Specification for Glass Micro Folin Pipet, Disposable

SCOPE
1.1 This specification covers a glass disposable micro Folin pipet suitable for use in micro techniques for estimation of blood sugar by the Folin method.  
1.2 The following precautionary statement pertains only to the test method portion, Section 8, of this specification. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use .

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaced By: ASTM E1092-91(2000)e1 - Standard Specification for Glass Micro Folin Pipet, Disposable
• Effective Date: 01-Jan-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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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 1092 – 91 (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
Glass Micro Folin Pipet, Disposable
This standard is issued under the fixed designation E 1092; 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 6. Physical Properties
1.1 This specification covers a glass disposable micro Folin 6.1 Design—The micro Folin pipet shall be made of one
pipet suitable for use in micro techniques for estimation of piece construction glass tubing that is straight and uniform bore
blood sugar by the Folin method. with a point pulled on one end to the dimensions as specified
1.2 The following precautionary statement pertains only to in Fig. X1.1.
the test method portion, Section 8, of this specification. This 6.2 Dimensions—The pipet shall be made of tubing with an
standard does not purport to address all of the safety concerns, outside diameter (o.d.) of 2.5 6 0.1 mm with an inside
if any, associated with its use. It is the responsibility of the user diameter (i.d.) of 1.8 6 0.1 mm. The uniformity of the bore
of this standard to establish appropriate safety and health shall be6 0.05 mm throughout the straight portion of the pipet.
practices and determine the applicability of regulatory limita- The pipet shall be 183 6 1 mm long with all dimensions and
tions prior to use. tolerances as shown in Fig. X1.1.
6.3 Capacity—The pipet shall be calibrated “to contain”
2. Referenced Documents
(T.C.) 0.1 and 0.2 mL at 20°C. Marking shall be as specified in
2.1 ASTM Standards:
6.5.
E 438 Specification for Glasses in Laboratory Apparatus 6.3.1 Accuracy (see 3.1)—The accuracy from stated volume
2.2 ISO Standard:
shall be 61.0 % for the 0.1 and 0.2-mL capacity and shall be
1769 Laboratory Glassware—Pipettes—Color Coding
determined as specified in 8.1.
6.3.2 Coeffıcient of Variation (see 3.2)—The coefficient of
3. Terminology
variation from stated volume for the 0.1 and 0.2-mL capacity
3.1 Definitions of Terms Specific to This Standard:
shall not exceed 1.25 % and shall be determined as specified in
3.1.1 accuracy—the expected distribution of mean volumes
8.1.
around the stated volume.
6.4 Graduation Lines—The pipet shall be calibrated and
3.1.2 coeffıcient of variation—the expected distribution of
marked with graduation lines at 0.1 and 0.2 mL from the tip of
individual volumes around the mean volume.
the pipet. The graduation lines shall be 0.3 6 0.1 mm and shall
3.1.3 disposable—micro Folin pipets that are intended to be
completely encircle the tube.
used once only and then discarded.
6.5 Pipet Nomenclature—The pipet shall be marked with
0.1 and 0.2-mL markings slightly above the graduation lines.
NOTE 1—Such pipets will only be expected to provide their specified
The pipet may be marked with the inscription TC 20°C, or the
performance during the original operation.
manufacturer’s or vendor’s name or trademark, or both.
4. Classification
6.6 Color Coding—The pipet shall be color coded for
capacity as specified in ISO Standard 1769 with an “orange”
4.1 This specification covers only one glass pipet as illus-
color band that is 6 mm 6 2 mm wide and located 16 6 2mm
trated in Fig. X1.1.
from the top of the pipet as shown in Fig. X1.1.
5. Materials and Manufacture
6.7 Markings Permanency—Graduation lines, inscriptions,
and numerical markings on the pipet (other than the color code
5.1 The pipet shall be made of borosilicate glass, Type 1,
band) shall be black in color. All markings may not be of
Class B, or soda lime glass, Type 2, in accordance with
permanent nature but must possess sufficient stability to endure
Specification E 438.
normal transportation and its expected one-time use and must
meet the test requirements as specified in 8.5.
This specification is under the jurisdiction of ASTM Committee E-41 on
6.8 Lot Control—A lot or control number shall be indicated
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.04 on
on the pipet container package. This lot or control number shall
Laboratory Furniture, Fume Hoods, and Related Equipment.
Current edition approved Aug. 15, 1991. Published October 1991. Originally
published as E 1092 – 86. Last previous edition E 1092 – 86.
Annual Book of ASTM Standards, Vol 14.02.
Available from ISO, 1 Rue de Varembe, Case Postale 56, Crt 1221, Geneva 20,
Switzerland.
E 1092
be traceable to the origin and pu
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