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ramé-hart instrument co. July 2014 Newsletter
 

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ramé-hart Model 790 High Speed Automated Goniometer / Tensiometer
Here at ramé-hart we've been busy working on a new high-end model instrument that will fit the needs of the most demanding surface science researchers. We're pleased to announce our all new Model 790-G1 High Speed Automated Goniometer / Tensiometer. This system sports our 21" optical bench and Advanced 3-Axis Stage with fine and coarse vertical adjustment. The Automated Tilting Base is an integrated component used for measuring advancing and receding contact angle, roll-off angle, and contact angle hysteresis. The system includes both manual and automated dispensing - the latter is with our Automated Dispensing System which is capable of being switched from one liquid to another in less than a minute. The included Oscillator allows this instrument to also measure surface dilatational elasticity and viscosity. The standard Environmental Chamber with Temperature Controller is included for conducting studies at elevated temperatures up to 300° C. The Environmental Fixture (also included) is used for liquid/liquid studies including interfacial tension and captive bubble experiments. The system also includes our new Peltier Environmental Chamber for working at chilled temperatures down to -50° C or at elevated temperatures as high as +150° C. The overhead optical imaging component allows for the measurement of contact angle on hydrophilic surfaces on the specimen stage or surfaces with valleys that prevent direct line of sight viewing. The G1 Series High Speed Camera with GigE interface is standard on Model 790 and spare parts for the instrument and dispensing system are also included in the base price.


ramé-hart Model 790 High Speed Automated Goniometer / Tensiometer

Model 790 is an ideal platform if your application calls for a wide variety of analytical tools including: static static contact angle, dynamic contact angle, advancing and receding contact angle, roll-off angle, contact angle hysteresis, surface energy, surface tension, interfacial tension, surface dilatational elasticity and viscosity. The methods-based DROPimage Advanced offers unlimited possibilities for a wide variety of studies including wetting, roughness, absorption, spreading, cleanliness, and surface heterogeneity and characterization at ambient, chilled, or elevated temperatures.

If you are interested in Model 790, feel free to contact us today for a quotation or for more information.
 


Thirty-five Things You Can Measure with a ramé-hart Model 790
The following is a list of (35) things you can measure with a Model 790 out of the box - that is, no additional accessories or parts are necessary.

1. Measure static contact angle.

2. Measure the surface tension of a liquid using the pendant drop method.

3. Measure the surface energy of a surface using the Acid-Base tool.

4. Measure the advancing and receding contact angle using the tilting plate method.

5. Measure the contact angle hysteresis.

6. Measure the roll-off angle.

7. Measure the contact angle as a function of temperature (chilled or elevated).

8. Measure the contact angle as a function of time.

9. Measure the rate of absorption.

10. Measure the work of adhesion.

11. Measure interfacial tension.

12. Measure the surface dilatational elasticity and viscosity.

13. Measure dynamic contact angle (as a function of volume).

14. Measure contact angle on a superhydrophilic surface using the overhead method.

15. Measure the Cassie to Wenzel transition (using the included high-speed camera).

16. Measure the contact angle of a captive bubble.

17. Measure surface tension as a function of temperature (chilled or elevated).

18. Measure drop volume, drop height, and drop width.

19. Measure surface energy using the 2-liquid SE tool.

20. Summarize wetting behavior using Zisman's plot tool.

21. Measure surface energy using the Solid-Liquid-Liquid Tool.

22. Use the Trigger command to capture contact angle at the moment of drop deposition when working on a surface that has fast wetting or absorption properties.

23. Measure wetting properties on superhydrophobic surfaces.

24. Measure surface tension using a sessile drop.

25. Measure the contact angle of a fiber.

26. Record a video of a dynamic or time-dependent study using one of two different methods.

27. Measure the contact angle of a sessile drop that is in the valley or recess of a part (using the overhead method).

28. Automatically add or remove volume while measuring contact angle (using the Automated Dispensing System).

29. Measure relaxation.

30. Use the constant volume option to study surface tension or contact angle over time.

31. Measure contact angle or surface tension on previously saved image.

32. Use video replay to measure contact angle or surface tension on a series of previously captured images that were taken over time.

33. Measure the contact angle of an inverted sessile drop in a liquid/liquid environment (using the included Environmental Fixture).

34. Measure surface energy as a function of temperature (elevated or chilled).

35. Measure distances (using the Measure Distance command) between any two points on an image.

Of course, with the power of our methods-based DROPimage Advanced software, along with the wide variety of hardware included with Model 790, the possibilities are endless. There are indeed many additional studies and experiments which can be designed and executed using this powerful platform.

 

Regards,

Carl Clegg
Director of Sales
Phone 973-448-0305
www.ramehart.com
Contact us


 

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