ASTM E979-20 - 1.12.2020
 
Significance and Use

5.1?This procedure is designed to determine the effectiveness of antimicrobial agents intended for microbial control in invert emulsions and other water containing hydraulic fluids.

 
1. Scope

1.1?This laboratory practice is designed to evaluate the utility and effectiveness of antimicrobial agents intended to control microbial growth in invert emulsions and other water containing hydraulic fluids.

Note 1:?Procedures for preparation of water soluble hydraulic fluids and recovery of organisms appear in Practice E2169.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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. Referenced Documents

E2523-23

Standard Terminology for Metalworking Fluids and Operations

E2169-22

Standard Practice for Selecting Antimicrobial Pesticides for Use in Water-Miscible Metalworking Fluids

E1326-20

Standard Guide for Evaluating Non-culture Microbiological Tests

D5465-16(2020)

Standard Practices for Determining Microbial Colony Counts from Waters Analyzed by Plating Methods

D4454-85(1997)

Standard Test Method for Simultaneous Enumeration of Total and Respiring Bacteria in Aquatic Systems by Microscopy

D1129-13(2020)e2

Standard Terminology Relating to Water (Includes all amendments and changes 2/14/2024).