Foam Tester FOA - the Professional in Lab
Testing the foaming behaviour of liquids under pressure
The Foam Tester FOA is an automated laboratory device that enables precise analysis of foam behaviour. Aspects such as foam formation, foam decomposition and foam stability are analysed both with and without the addition of foam inhibitors.
This device can be used to develop foam inhibitors and evaluate their effectiveness under realistic conditions.
The Foam Tester operates at pressures of up to 10 bar (145 psi) and temperatures of up to +150 °C (+300 °F). It is optimised for both aqueous and hydrocarbon-based liquids, such as condensates, petroleum oils and solvents.
All important features of FOA
- Electronically adjustable gas flow
- Overflow valve regulates cell pressure
- Each cell can be controlled independently
- Variable pore sizes of the diffuser enable different bubble sizes
- Easy handling thanks to pneumatic lift
Application Areas of the Foam Tester FOA
Analysing aqueous and organic samples
Test of defoamer performance
Investigate foam stability
Test of foamer performance
Investigate foaming behaviour under pressure
Quality control
Short story Foam Tester FOA
Foaming behaviour under different conditions
The Foam Tester FOA can be equipped with one or two measuring cells. This enables the test of foams at variable conditions. The foam production (foaming), the foam stability and also the foam decomposition can be tested.
The foam is produced by injecting nitrogen or compressed air through a nozzle. The gas enters the sample through a diffuser, so it is very finely distributed. This results in very homogeneous foam formation. The gas is also brought to test temperature in a preheating column.
IN USE WORLDWIDE
Used by Leading Labs
Different measuring methods for foam
Carry-over Test
In a carry-over test the produced foam is discharged and collected outside the test cell. The collected mass is measured by a laboratory balance.
The foam is produced and discharged depending on the temperature, gas flow rate, pressure and pore size of the diffusor.
The ratio between total mass of discharged foam and liquid used with and without foaming agent gives the effectiveness for the foaming agent.
For tests at higher temperatures the foam can be cooled while it is discharged.
Foam Stability Test
To test foam stability a specific amount of foam is produced in the test cell in relation to temperature, gas flow rate, pressure and diffusor pore size. The foam is decomposing simultaneously so an equillibrium between production and decomposition can be achieved. The resulting height of the foam in the test cell can be measured directly on the scale imprinted on the test cells.
Additives which effects the foam stability can be injected during the test.
Collapse Test
For a collapse test a certain amount of foam is produced similar to the stability test. After reaching equilibrium or a pre-defined height of foam, the gas flow is interrupted and foam generation stops.
The collapse of the foam is monitored over a certain period of time.
Everything under control
The gas flow rate is controlled via the software by an electronic flow regulator. The pressure is regulated by a back pressure relief valve and displayed on an analogue pressure gauge and in the software. The temperature of the specially designed drying bath oven is maintained and controlled via the software.
Online Demo for Foam Tester FOA
During the product demonstration, you will gain many insights into how it works. You can follow the measuring process live and then discuss your questions with our experts.
The most important facts at a glance
| Number of Fingers | 2 |
| Pressure Range | 0 .. 10 bar (145 psi) |
| Temperature range | +30 .. +150 °C (+86 .. +302 °F) |
| Sample Volume | 50 .. 200 ml per station |
| Standard | Based on principles of ASTM D892 |
Data Sheet Foam Tester
In the product data sheet you will find the exact specification as well as many data and options to help you decide in favour of the Foam Tester FOA.
WHY PSL?
We set new laboratory standards with our instruments
We have been developing, manufacturing and selling innovative laboratory instruments specifically for Flow Assurance for 25 years, setting new standards in the laboratory for professionals. We have been awarded innovation prizes for this. Our export quota of 90 % earned us the Export Oscar of Northern Germany.
PSL stands for reliability, quality and innovation. We are proud that the Big Five in the industry are among our satisfied customers.
WHAT WILL BE YOUR BENEFIT?
Reliable, high-quality instruments for your success
SAVE TIME IN EVERYDAY LAB WORK
with automated test cycles, cleaning procedures and easy-to-clean parts.
EASY TO USE
with a user-friendly, high-quality design for simple, correct and safe handling.
LONG LIFETIME MADE IN GERMANY
thanks to the sophisticated and robust design as well as the high-quality materials and manufacturing.
TRUSTED SERVICE - WORLDWIDE
with our online support, maintenance contracts and on-site service. We guarantee 20 years of repair service.
MEASURE LIKE INDUSTRY LEADERS
With innovative and advanced instruments, you can measure future-proof like the leading laboratories.
PLEASURE TO MEASURE
Our instruments make work a pleasure. They were developed together with the users.
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