OCA 25
The&nbsp;video-based optical contact angle measuring system, OCA 25, is our most versatile instrument for the measurement and&nbsp;analysis of contact angle and drop shape. The OCA 25 is available in the variants: OCA 25L, and OCA 25LHT.&nbsp;
Features of the basic instrument configuration: 
 Sample table with manual adjustment in three axes, via high-precision mechanics, for the precise and accurate positioning of the sample. High performance 6x parfocal zoom lens with integrated continuous fine focus, and adjustable observation and camera tilt angle. Video measuring system with high-resolution USB camera (max. 123 images/s sample rate). Lighting of the optical path with software controlled intensity adjustment, without hysteresis. Max. sample dimensions (L x W x H):&nbsp; OCA 25: 220 x ¤&nbsp;x 70 mm. OCA 25L: 330 x ¤&nbsp;x 70 mm. OCA 25LHT:330 x ¤&nbsp;x 70 mm, HTFQ 1200 or HTFC 1800.
 Optional OCA accessories: Some of the most important components and accessories are listed below:&nbsp;
 High-speed option for USB camera (max. 215 or 311 images/s sample rate), High-speed video system UpHSV1220 (max. 1220 images/s sample rate), or UpHSV3000 (sample rate 3000 images/s). Software controlled electronic multiple dosing systems, E-MDr, for the precise automatic positioning of up to six dosing needles. Direct dosing system, SD-DM, DD-DM, SD-DE or DDE/x, Up to six electronic syringe units, ESr, with precise adjustable dosing volume (min. 50 nl) and dosing speed (0.06 µl/sâ¦26.4 µl/s). Electronic tilting base unit, TBU 95, for a maximum tilt angle of 90° and manual tilting base attachment, TBA 60M, for a maximum tilt angle of 70°. Electronic turn table with vacuum fixation, ETTr/VAC, with wide range of top plates. Temperature and environmental control systems (-30â¦1800 °C und 1 mPaâ¦ 5·106&nbsp;Pa). Wide range of sample holding and positioning units. Inc holders for foils or papers, FSH 30 and FSC 80/150, for single fibres, FHO 40plus, or the suction plate, SP 100, for holding thin flexible samples flat on the stage, with an adjustable suction area. Oscillating drop generators, ODG 20 and ODG 20P, for the measurement of surface elasticities and for relaxational studies at phase boundaries. Electro-wetting platform, EWP 100, for the analysis of sessile and pendant drops in an electrical field. Top view video system, TV-VS, for the qualitative view and image capture of the of the drop position (USB camera with 52 images/s sample rate, 6x parfocal zoom lens and adjustable observation angle). The available software modules for the OCA 25 are: SCA 20 â contact angle. SCA 21 â surface free energy. SCA 22 â pendant drop. SCA 23 â lamella contour. SCA 26 â oscillation / relaxation. &nbsp;
 Data Sheet OCA 25
