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Home  >>  Products  >>  Surface Tension  >>  PGX+
PGX+ Measuring Head

Complies with test method Tappi T458, ASTM D 724, ASTM D 5946


  • Camera captures 80 images/second

  • Measures Static/Dynamic Contact Angles to determine wetting, absorption and spreading over time

  • Surface Contamination Control

  • Checks the Liquid Surface Tension from the shape of the pendant droplet

  • Determines Surface Energy using one or more probing liquids





PGX+ Measuring Head is a video based instrument designed for quality control applications. This model has all the features of model PG3, with the addition of an automatic application of the droplet. In addition this model can test specimens of "any size" as it does not require cutting of samples.

The integrated pump delivers accurate droplets in steps of 0.5 μl and the built-in camera captures single droplet images to determine the static contact angle at "equilibrium" or a sequence of images to measure the dynamic wetting, rate of sorption and spreading as a function of time. The PGX+ software measures surface tension of the test liquid, calculates the surface energy of a solid and includes a report generator. The PGX+ is connected directly to the USB port of a laptop or a desktop computer.

  • Very small footprint - 90(L) x 55(W) x 90(H) mm
  • Integrated camera - Captures 80 images/second (640 x 480 pixels)
  • Remote Control from PC Keyboard
  • Integrated pump - Delivers precise droplets in 0.2 μl steps
  • Automatic Droplet Application - Static and Dynamic Mode
  • Runs on most PC & Laptops (USB)
  • Easy to install and transport - no hardware to fit inside computer!
  • User-friendly software for Windows 10 (64 bit), Windows 7 (32/64-bit), XP, Vista (32/64-bit)
  • Multiple language user dialogue
  • Free Software Updates
  • Complies with test method Tappi T458, ASTM D 724, ASTM D 5946

PGX Screenshots


Technical Data

Technical Data
Operation: Automatic
Sampling: Specimen Size: Any size sample
Max Specimen Thickness: Unlimited
Pump:** Automatic
Drop Applicator: Automatic
Contact Angle Readings: Automatic
Contact Angle Range: 0.5 - 180°
Accuracy: ±0.5°
Repeatability: ±1°, when measuring on a steel ball (calibration tool)
Power Supply: via USB Cable
Dimensions (LxWxH) mm: 90 x 55 x 90
Weight: 400 grams
Shipping Weight: 1200 grams
Program Functions: Static Contact Angle: Yes
Dynamic Contact Angle: Yes
Surface Tension: Yes
Surface Free Energy: Yes
**Pump Specifications
Droplet Size: 0.5µL, 14µL, in steps of 0.5µL. Liquid volume: one ml.






Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

PGX+, carrying case, user's manual in English, software for XP - Vista and Windows 7 (32bit and 64bit), calibration kit, spare pump tubing, droplet dispenser.
FT-302510 PGX+ Pocket Goniometer $13,430.00
Disposable Items:
FT-305035 PTFE Tubing Kit with +L - Cannulas and Pump Tubing 638.00
FT-305037 Silicone Tubing Kit with +L - Cannulas and Pump Tubing 536.00




PG Dosing Unit

This testing instrument is used to determine the interaction between a liquid droplet and a surface. Liquid droplets can be applied by means of a manual dispenser (syringe) or in some of the models an integrated miniature pump.

When tacky liquids or many different liquids are used, it is necessary to clean or replace the liquid system to avoid contamination

Dosing Unit Kit




  • Disposable Liquid System with low cost syringes and pure PTFE tubings
  • Small & portable size
  • Affordable & versatile
  • Programmable droplet size and cyclic pump sequences
  • Automatic testing of advancing/receding contact angles


Technical Data

Technical Data
Pump Functions
Preset Droplet Volumes: At 2, 4 and 8 μL
ProgrammableVolumes: Three user-defined (0.1 …20 μL)
Programmable Pump Cycles: Three user-defined (0.1 …20 μL)
Top-Up Function: Yes
General Specifications
Power Supply: 100-240 VAC or 12 VDC
Power Consumption: 2W
Dimensions (LxWxH): 6.3" x 2.2" x 2.2" (160 x 55 x 55 mm)
Weight (Incl Syringe): 0.7 lbs. (500 grams)




The new concept ‘Disposable Liquid System’ is an attractive alternative to tedious cleaning and replacement of expensive parts. In addition the new PG Dosing Unit will offer new opportunities not yet available with the standarrd instruments.


The PG Dosing Unit is based on a standard syringe pump for low-cost disposable syringes. The complete liquid system consists of a one mL syringe, a dispensing tip and a PTFE tubing. This standard syringe produces more than two hundred liquid droplets of four microlitres and when the syringe is emptied or not required any more, the entire liquid system is disposed of. A new syringe is then filled with the new test liquid, a new dispensing tip with tubing is attached and the syringe is put intoi the PG Dosing Unit. Disposable items like syringes, dispensing tips and PTFE tubings are offered in economical bulk packages.

The PG Dosing Unit can be operated in many modes. The most comon use is to set the pump to a preset droplet volume and pump out a new droplet for each new test position. The PG Dosing Unit can also be programmed for sophisticated analysis of the “wetting hysteresis” using the advancing/receding contact angles to characterize the surface properties.

Here the dynamic contact angle is measured as the droplet advances across the test surface (top view). The pump flow is then automatically reversed at a user-defined volume and the liquid droplet is now receding on the surface (center view). Finally the droplet will release from the dispensing tip (bottom view) and the test is aborted.

PG Dosing



Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

Plastic Case, 5 disposable syringes, 5 PTFE tubings with LILAC Dispensing Tip 0.2 mm, Power Adaptor 100-240 VAC, 5 PTFE tubings with RED Dispensing Tip 0.5 mm, 5 PTFE tubings with PINK Dispensing Tip 0.9 mm
FT-305201 PG Dosing Unit $3,995.00
Disposable Items:
FT-305911 Syringe w/o tip, 100 pcs, one mL volume 105.00
FT-305921 PTFE tubing, 1.5/0.2 mm, 100 pcs, L=250mm 179.00
FT-305931 PTFE tubing, 1.5/0.5 mm, 100 pcs, L=250 mm 179.00
FT-305941 PTFE tubing, 1.5/0.9 mm, 100 pcs, L=250 mm 179.00
FT-305951 Dispensing tip 0.2 mm, 50 pcs, LILAC 179.00
FT-305961 Dispensing tip 0.5 mm, 50 pcs, RED 179.00
FT-305971 Dispensing tip 0.9 mm, 50 pcs, PINK 179.00


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