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ASTM-D1343:2000 Edition

ASTM-D1343:2000 Edition

$35.75

D1343-95(2000) Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method

Published By Publication Date Number of Pages
ASTM 2000 4
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1.1 This test method describes the apparatus and general procedure for making ball-drop viscosity measurements on solutions of various cellulose derivatives. Instructions for sample preparation, solution concentration, and other details are discussed in the ASTM methods for the respective cellulose derivatives.

1.2 This test method is applicable to solutions of various cellulose derivatives having viscosities greater than 10 P, by using balls of various diameters and densities. Viscosity results are expressed preferably in poises.

1.3 In commercial practice, viscosities are often expressed in seconds using 3/32-in. (2.38-mm) stainless steel balls. When the viscosity is outside the practical range for these balls (75 to 300 P), the measurement can be made using a calibrated pipet viscometer or a different ball and calculating the observed viscosity to the corresponding time for a 3/32-in. ball, even though it is a small fraction of a second.

1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Summary of Test Method
Significance and Use
Apparatus
TABLE 1
2 Calibration
Procedure
Calculation
TABLE 2
3 Report
Precision and Bias
Keywords
TABLE 3
FIG. 1

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