Environmental Fixture
This accessory is designed for liquid/liquid studies including captive bubble, inverted and hanging pendant drops as well as regular and inverted sessile drops. Our standard Quartz Cell (p/n 100-07-50) is included to provide distortion-free viewing. Outfitted with a suspension stage for solid substrate fixturing and/or immersion in bulk liquid in the quartz vessel. The stage height is externally adjustable and the entire fixture can be easily disassembled for cleaning. All metal parts are stainless steel or anodized aluminum.
Environmental Chamber
The Environmental Chamber, in conjunction with any Model 100-00, 260, 500, 590, or 790 ramé-hart goniometer, permits controlled conditions for the study of contact angle, surface energy, and surface tension. Controlled elevated temperatures to 300° C are produced by the integral electrical heaters, while sub-ambient temperatures can be produced by circulating a suitable coolant through the base of the chamber. Fittings for this purpose, and others for atmosphere control, are furnished. The chamber is suitable for vacuum use and pressures to 0.6 Atmospheres. Custom designed environmental chambers are available by special request. This option requires a Proportional Temperature Controller (p/n 100-50) if regulated elevated temperature is desired. Order p/n 100-07-KIT if you require both the Environmental Chamber 100-07 and Proportional Temperature Controller 100-50.
Additionally, a quartz cell (p/n 100-07-50) is available for liquid/liquid, inverted sessile drop, and captive bubble studies. A Cover with Stage assembly (p/n 100-09-10, shown below) is also available to facilitate advanced studies requiring a submerged adjustable stage.
Rotating Wafer Support
The rotating wafer support maintains flatness and position of 4″, 6″, 8″, 10″, 12″, and 13.625″ diameter wafers in order to achieve contamination-free contact angle readings while preserving flatness. Each wafer support is hand lapped to a high-tolerance. The support incorporates a rotating stage plate which is graduated in 1° increments with displacement holes for creating the appropriate suction. The wafer support mounts directly to the leveling stage of the Contact Angle Goniometer. Model 400 supports and includes an 8″ wafer support (and other sizes can be added). Models 190, 200, 250, and 290 support the 4″ wafer support only. Larger supports may require an upgrade kit which will extend the working distance of the camera and extend the microsyringe fixture. We offer kits which include all of the necessary parts.
Film Clamps
The Film Clamps are furnished as a pair and mount directly to the working surface of the leveling stage of any ramé-hart goniometer. Their function is to maintain flatness of film-type substrates and they can also be utilized to secure specimens to the stage when using the tilting base to evaluate advancing and receding contact angles.
Imaging Upgrade Kit
For over 40 years, ramé-hart has built contact angle tools. Many of the legacy instruments, in particular Model 100-00 with a manual microscope, are still in use. Our manual-to-automated Imaging Kit (p/n 100-12-U1-00-UPG) provides all of the necessary components to upgrade a legacy instrument to function as a current-generation instrument. We add our U1 Series SuperSpeed Digital Camera, our DROPimage Standard software, PC and LCD, and all necessary components to convert a legacy tool to a current-generation tool allowing you to preserve your investment while keeping up with the advances in imaging and software technology. In order to provide a firm quotation, we suggest you email us a snapshot of your system so we can determine if any other upgrades or components are necessary in order install the kit. Please contact us for further details and current pricing
Heated Environmental Cell
The Heated Environmental Cell can be added to any ramé-hart instrument (current or legacy model). This cell provides temperature control to 300° C. The Temperature Controller (100-50) is included. Cooling ports are included for cycling chilled water or a coolant to bring the temperature down quickly or to below ambient temperatures. Optional temperature logging is possible with DROPimage Advanced v 2.7 or higher.
Lead Frame Support
This accessory maintains flatness and position of lead frames in order to achieve accurate contact angle measurements. Precise positioning of each testing surface is accomplished with ease. This support mounts directly to the stage of the Contact Angle Goniometer. Size requirements for various lead frames are easily accommodated by our manufacturing facility.
Quartz Cell
This Quartz Cell option is included with the Environmental Fixture p/n 100-14 and can be ordered as a replacement part for that option. The quartz cell also is designed to work inside of the Environmental Chamber p/n 100-07 and Advanced Chamber p/n 100-26 and Peltier Environmental Chamber p/n 100-30. It can also be used stand-alone for liquid/liquid and liquid/gas studies when no stage is required. The internal volume is 45mL.
Manual Tilting Base
This tilting base is the same as 100-25-A except instead of being software-driven, it’s manually driven with a hand crank. The 100-25-M can be upgraded to the Automated version with the upgrade kit p/n 100-25-U. This option is supported on every current-generation ramé-hart instrument and is an excellent choice for measuring advancing and receding contact angles as well as determining contact angle hysteresis and roll-off angle.
Microsyringe Fixture
The microsyringe fixture facilitates rapid and precise formation of pendant and sessile drops. Following placement of a sessile drop, the syringe is easily swung from the field of view. It will return to its exact working location for placement of the subsequent drop. Alternatively, it can remain at the working location, allowing the user to continuously add or withdraw fluid from a sessile drop for the purpose of forming advancing or receding contact angles. This attachment is now included with all ramé-hart goniometer systems but is available as an option for users of our legacy instruments that did not include this accessory. Note that the Microsyringe Fixture supports both the manual Microsyringe Assembly (p/n 100-10-20) as well as any adapter for the Automated Dispensing System (p/n 100-22).
Proportional Temperature Controller
The ramé-hart Proportional Temperature Controller permits precisely regulated temperatures between ambient and 300° C and is used in conjunction with the ramé-hart Environmental Chamber p/n 100-07, Elevated Temperature Syringe p/n 100-11, ramé-hart Advanced Chamber with Temperature Control p/n 100-26-T*, and the ramé-hart High Pressure Chamber p/n 100-08. Available in 115V and 230V versions. This product now (since July 2013) features an RS-485 port which will allow temperature logging when used with DROPimage Advanced v2.7 or higher.
*Note that p/n 100-26-T and p/n 100-11 are limited to 230° C.
Oscillator
The ramé-hart Oscillator, when used in conjunction with the ramé-hart Automated Dispensing System, provides precision-controlled periodic oscillatory deformation of pendant and sessile drops and bubbles in order to measure surface dilatational elasticity and viscosity using DROPimage Advanced v2.4 or above. The Oscillator supports speeds between 0 and 25Hz and is ideally suited for many dynamic surface tension and surface rheology studies.