ASTM D1881 – Standard Test Method for Foaming Tendencies of Engine Coolants in Glassware
Description:
Significance and Use
5.1 The test method generally will distinguish coolants that have a tendency to foam excessively from those that are suitable for further evaluation to determine performance in actual service.
NOTE 1: In use, the foaming tendency of a coolant solution may be increased by service aging or contamination. A properly functioning pressure cap will tend to suppress foaming in coolant solutions.
Scope
1.1 This test method covers a simple glassware test for evaluating the tendency of engine coolants to foam under laboratory-controlled conditions of aeration and temperature.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are approximate equivalents provided for information purposes only.
ASTM D1876