ASTM E1521-19

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1521 − 14 E1521 − 19
Standard Test Method for
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Liquid Holding Capacity of Granular Carriers
This standard is issued under the fixed designation E1521; 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
1.1 This test method is used to determine the liquid holding capacity (LHC) of granular carriers.
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 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 5.
1.4 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.
2. Summary of Test Method
2.1 Incremental amounts of suitable fluids are added to a known weight of granular carrier. The point at which the granules stick
to the sides of the container allows calculation of the LHC.
3. Significance and Use
3.1 This test method has been designed principally for granular carriers with LHC greater than 5.0 %. The incremental amount
of suitable fluid added can be adjusted down as needed for carriers with LHC less than 5.0 %.
3.2 This test method has been designed principally for granular carriers with a relatively rapid absorption of liquid. Some
materials may absorb liquids more slowly than the described times in the method. If such is the case, the time limit of two (2) min.
may be extended.
3.3 This test method is applicable to granules in the range from 4 to 100 mesh (4.75 to 0.150 mm).
4. Apparatus and Reagents
4.1 Buret Stand.
4.2 Buret, 10 to 25 mL, accurate to 0.2 mL.
4.3 Glass Bottle, 29.6 mL, with poly seal cap (7 by 3.5-cm outside diameter).
4.4 Glass Bottle, 236.8 mL, wide mouth with poly seal cap.
4.5 Suitable Fluids, dearomatized mixed aliphatic solvents like Exxsol(R) D110 from Exxon Mobile Chemical Company, that
boil in the range of 250–275°C and have a specific gravity of 0.80–0.82.
4.6 Balance, accurate to 60.1 g.
5. Safety Precautions
5.1 Before testing, read the precautionary statements on the product label and material safety data sheet. Take proper precautions
to prevent skin contact and inhalation of the fines and vapors. Take care to prevent contamination of the surrounding area. Always
wear the appropriate safety equipment and, where indicated, wear respiratory devices approved by NIOSH for the product being
tested.
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This test method is under the jurisdiction of ASTM Committee E35 on Pesticides, Antimicrobials, and Alternative Control Agents and is the direct responsibility of
Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
Current edition approved Aug. 1, 2014Nov. 1, 2019. Published November 2014January 2020. Originally approved in 1992. Last previous edition approved in 20062014
as E1521 – 01(2006).14. DOI: 10.1520/E1521-14.10.1520/E1521-19.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1521 − 19
6. Procedure
6.1 Weigh 7.0 6 0.1 g of granular carrier for LHC determination into a 29.6-mL glass bottle.
6.2 From a buret, add a suitable fluid as follows: 0.5-mL increments until 2.0 mL is reached, or the carrier meets one end point
condition. Shake between increments by hand or mechanical shaker until completely absorbed. (A few sharp taps with the heel
of the hand may be necessary to break up a saturated portion.) Shaking should not exceed 2 min.
6.3 After the first 2.0 mL is added or one end point condition is met, decrease the increments to 0.2 mL and proceed as described
in 6.2 until the end point is reached. The end point is indicated by two or more of the following:
6.3.1 Carrier darkens or appears wet.
6.3.2 Granules cease to be free flowing.
6.3.3 Granules stick to sides of bottle.
6.3.4 Granules stick to b
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