The DyneMaster series DY-300 is a pretty new surface / interfacial tensiometer that has been developed with KYOWA’s experiences and know-how acquired by the past 50 year's manufacturing surface / interfacial tensiometers. It operates fully automatically by computer and is applicable to both Wilhelmy plate and du Nouy ring methods. Lamella length and liquid density can be measured as well as surface / interfacial tension. These physical properties and phenomena present significant index for wettability, foaming and its stability, permeability, and absorbing, etc., which are typically studied among the industries of coating from row material to additives. 　　Features: 　　　　　　-          Very supportive for operator with dialog guidance and movies 　　　　　　-          Repetition of measurement can be pre-set for simple checking 　　　　　　　　 repeatability with unmanned 　　　　　　-          Pre-wetting function of Wilhelmy plate method is available. It 　　　　　　　　 eliminates error to be caused by liquid-plate repulsion in dry. 　　Examples of plot: 　　　 Surface tension variations over time　　Lamella length 　　　 The PCA-1 is designed to measure contact angle by putting the body on an object, and is portable for its hand-held size and lightweight body. Those allow measuring the following objects in situ: 　　　　　　-          Large panels and objects without cutting into pieces 　　　　　　-          Coating of automobile body, building-block directly 　　　　　　-          Part of human body Automatic operation. Pushing the start button on the body or the software screen performs fully automatic measurement from dispensing a droplet to displaying contact angle results. Liquid sample is prepared in the syringe, which can be easily mounted and dismounted on the body. 30fps image capture is available to obtain data in the time function. Surface free energy analysis and surface tension measurement by pendant drop method are possible. 　　　　　Measurement of large panel　　　　　Measurement of human arm New model of KYOWA’s dynamic surface tensiometer BP (bubble pressure method) series with simplified functions. The dynamic surface tension presents effective data for the following applications: 　　　-          Characterizing surfactants in the view of surface adsorbing speed 　　　-         Estimating instantaneous liquid wettability in flowing or stirring condition Bubble is generated continuously and the flow rate is changed automatically to plot dynamic variations of surface tension over time. Variations of pressure can be monitored with the display of waveform. Stability of pressure change and life time can be confirmed. Rosen fitting characterizes the slop of surface tension decrease, which is a reference for studying bubbling phenomena. 　　　　　　　　　Surface tension of surfactant changes according to 　　　　　　　　　concentration of surfactant molecules.