PG-X PocketGoniometer
Unique, portable and robust goniometer instrument for determining the wettability of substrates without having to cut or prepare them. Measures static contact angle, dynamic contact angle, surface tension and calculates surface free energy, by placing the instrument directly on the test surface. Huge range of wetting and contact angle applications.
The PG-X is a unique, robust and portable instrument for investigating the wetting behaviour of a liquid on a solid surface. Static contact angles, dynamic contact angles, surface free energy and surface tension can be measured by placing the PG-X directly on to the surface of the material to be tested – no preparation of sample test strips is required.
The PG-X is a semi-automated instrument with an integrated automatic micro-pump that delivers a droplet of test liquid of consistent size for reliable, repeatable results. The droplet size is selectable in 0.5 µl increments and an integrated video camera captures up to 15 images per second to show precisely what happens from the moment of droplet contact.
Connecting directly to the USB port of a laptop or PC, the PG-X software is compatible with Windows ® 2000/XP (32 bit only), enabling the selection of test parameters and the storage of test data, which can subsequently be exported to other Windows ¨ programs such as Microsoft ® Access and Microsoft ® Excel. A movie of the dynamic test image can be replayed and exported and the results from two different tests can be compared.
The PG-X is compact, portable and available as a stand-alone instrument or as part of a Technical Field Kit, making it ideal for use in the laboratory and off-site.
Measuring a Curved Surface
Features
- No sample preparation – PG-X placed directly on to the surface to be tested
- Measures static contact angle as low as 2°
- Automatic calibration procedure
- Automatic droplet application for consistent results
- Integrated video camera for real-time dynamic contact angle measurements
- Selectable test parameters and storage of test data
- Movie of dynamic test image can be replayed and exported
- Software license permits use on unlimited number of computers simultaneously
- Free software updates for the life of the instrument
- Supplied in a carry case with spare Teflon ¨ droplet applicator tubing and a calibration standard syringe for filling the test liquid container
Carry Case
Performance data
- Integrated micro-pump delivers in 0.5 µl increments
- Export of test data to Windows ® programs such as Microsoft ® Access and Microsoft ® Excel
- Easy viewing of results as data and/or graphs
- Recall of previous test results and comparison of results from two different tests
Physical specifications
- Dimensions – 60 x 90 x 65 mm (W x L x H)
- Net weight – 400 g
- Power – Via USB cable link to laptop or PC
Standards
ASTM D724, D5946, TAPPI T458
Options
- Service and maintenance contract
- PG-X Technical Field Kit:
- PG-X system – Standard test liquid container
- Two manual dispensing units – PC laptop
- Field carry case for the transport of the laptop and the PG-X
Disposable Liquid Dispensing Unit
The Disposable Liquid Dispensing Unit
When tacky or different types of liquids are used with PocketGoniometers, it is necessary to clean and replace parts or the liquid system each time to avoid contamination. The new Disposable Liquid Dispensing Unit is an excellent alternative to this and also offers options not available with the standard instruments.
The disposable part of the system consists of a 1 ml syringe, a dispensing tip and a length of PTFE tubing. The syringe produces more than 200 liquid droplets of 4 µl and when emptied, or not required any more, the entire system can be disposed of. For each test liquid, a new syringe, dispensing tip and length of tubing is used and inserted into the dispensing unit.
The Disposable Liquid Dispensing Unit can be programmed to carry out the complex analysis of the wetting hysteresis by measuring the advancing/receding angles when the PG-X is in dynamic mode. After placing a droplet on the surface, the pump flow can be reversed automatically at a user-defined volume to make the droplet recede. The droplet is released on completion of the test.
Related Products
PG1-PocketGoniometer; PG3-PocketGoniometer