The Procedure of Testing Foam

Testing Foam

Testing Foam means generating foam and measuring the resulting foam volume in steady intervals during foam generation and foam decay. The relevant environmental parameters, such as the sample temperature, need to be recorded and held constant during the whole measuring procedure. The accuracy of the foam testing procedure will be determined by the repeatable generation of foam and by the resolution of the volume measuring system used.

Foam-Testing-System

The Foam Testing System (FTS) makes the automated testing of foam possible. It features a foam generator for aqueous liquids which delivers highly repeatable results and an automated measuring system of the foam volume. Hence, the test result is not disturbed by subjective factors.

Procedure of Testing Foam	Current Approach	SITA Foam Tester R-2000
Filling the Measuring Container with the Sample Liquid	manual filling of the measuring container	automatic filling of the sample container from a reservoir
Temperature Control	heating/cooling using a thermostat without direct temperature control in the sample liquid	sample temperature controlled
Conditioning		integrated stirring program conditions the sample
Foam Generation	various techniques	highly reproducible through the use of the patented rotor
Measuring Foam/ Generation and Decay	reading the foam level and time elapsed or using sensors to determine the level	microcomputer controlled scanning of the foam volume using a new kind of sensing technique
Draining the Measuring Container	manual	automatic: controlled by the system
Cleaning	manual	automatic: integrated cleaning procedure
Processing the Results	protocols, plots / graphs	a test protocol is automatically generated, processed and plotted by the software