Contact angle meters // OCA product series
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OCA product series Optical contact angle measuring and contour analysis systems ranging from basic device to fully automated measuring systems for micro-structured samples

Optical contact angle measurement and drop contour analysis The optical analysis of drops that hang from a dosing needle or are placed on a solid surface facilitates the determination of different surface and interfacial parameters. The contact angle that a liquid drop establishes on a solid surface characterises the solid’s wetting behaviour with said liquid. Having measured the contact angles of multiple test liquids the surface energy of the solid can be determined and the latter can be used to calculate the work of adhesion for different liquids. Young-Laplace evaluation When no other...

OCA models The OCA models The optical contact angle measuring and contour analysis systems of the OCA series combine high resolution optics, exact liquid dosing and precise sample positioning into powerful and reliable measuring systems. schematic assembly of the OCA models surface tension measurement using the pendant drop method with an OCA 15EC OCA 15EC The modular approach to all hardware components allows for a multitude of configurations, ranging from manually operated basic devices to fully automated high-performance measuring systems. All OCA models are based on a common design...

OCA models OCA 25 The OCA 25 is the all-purpose measuring device for contact angle measurements and drop shape analysis. The sample table of the OCA 25 is adjustable along all three directions in space via precision axes with hand wheels. Hence, a fast and exact manual positioning of the sample is always guaranteed, even when using high-performance temperature chambers like the electrical temperature control unit TEC 700. determination of the surface energy with an OCA 25 with a threefold electronic direct dosing system DDE/3 and three electronic syringe modules ESr OCA 25 sample table with...

OCA models OCA 50 & OCA 50EC The OCA 50 is the fully automatic measuring device for the time-saving analysis of the wettability of solid surfaces and the determination of the surface energy of solids. The sample table of the OCA 50 can be positioned along all three directions in space via electronic high-performance axes, with both extraordinary speed and highest precision. OCA 50EC with a threefold electronic direct dosing system DDE/3 and three electronic syringe modules ESr-N OCA 50 sample table with electronic high-performance axes for automatic positioning tioning system. Hence it is...

OCA models OCA 200 The OCA 200 is the contact angle measuring and drop contour analysis system for microscopic and macroscopic structures. The software-controlled, electrically driven optic alignment enables the OCA 200 to adjust the observation angle and to focus automatically. With the trendsetting 10-fold zoom lens and the reliable auto focus system by DataPhysics, the OCA 200 is equipped to handle any kind of sample size from a macroscopic silicon wafer to the microscopic mesh structure of a coronary stent. contact angle measurements on micro-structured samples using an OCA 200 with...

Wide range of accessories Accessories for every task With manual and electronic direct dosing systems up to four liquids can be positioned above the sample table with ease. The electronic syringe modules ESr-N which are used with all dosing systems work with glass or disposable syringes and dose down to typically 1 µl small drops. This allows for a comfortable analysis of macroscopic samples. nanolitre dosing system and the picolitre dosing system PDDS. They reproducibly dose small droplets of down to 10 nl and down to 30 pl, respectively. Further details are found in a separate data sheet....

Wide range of accessories Pursuant to the modular design of the OCA series, DataPhysics provides a wide range of accessories facilitating measurements under various environmental conditions. With different environmental chambers measuring temperatures from -30 °C to 700 °C can be reached. Dedicated to investigating the properties of metals, polymers or hotmelts in their liquid state is the electrical needle heating device NHD 700. This special piece of development enables the dosing of molten solids at temperatures up to 700 °C. Hence the surface tension of, for example, molten aluminium...

Comprehensive software Comprehensive OCA-software dpiMAX is the innovative and easy-touse software companion for the optical contact angle measuring and contour analysis systems of the OCA series. The software makes measuring with OCA systems easier and more comfortable than ever before. dpiMAX helps you to Measure your samples quickly, Analyse the results easily and Xplore your data intuitively. easy determination of a solids’ surface energy Instant drop image evaluation overview of measurement methods Smart and helpful functions dpiMAX is a software designed to smoothly guide the operator...

Contact angle measuring range Surface energy Liquid bridge analysis Oscillation / relaxation Topview contact angle sliding magnetic base manual precision axes electronic precision axes electronic precision axes traversing speed (X-axis) traversing speed (Y-axis) traversing speed (Z-axis) positioning resolution electrical needle heating device (RT … 700 °C) humidity generator of the HGC series Surface and interfacial tension measuring range resolution Sample table traversing range (X-axis [mm] x Y-axis [mm] x Z-axis [mm]) max. sample weight LED-lighting with manual and software-controlled...

6.5-fold zoom lens with integrated manual focus (± 6 mm) 10-fold zoom lens with software-controlled focus (± 4,5 mm) and observation angle (-9° … +2°2‘) USB 3 camera, 1/3″ sensor max. resolution 1448 x 1086 pixel with 156 frames/s, max. frame rate 3246 frames/s with 1448 x 60 pixel USB 3 camera, 2/3″ sensor max. resolution 2048 x 1088 pixel with 180 frames/s, max. frame rate 3250 frames/s with 2048 x 60 pixel Number of connecting sockets for accessories/extensions high-speed camera system Dimensions (L [mm] x W [mm] x H [mm]) Weight Power supply ○ with optional software/ac