協和界面科学 List of Products and Services

- Measurement data can be automatically saved and transferred to a predetermined location. - There will be no reading errors or transcription errors of measurement data, and the need to extract data using USB memory or similar devices will be eliminated. - Concerns about computer virus infections from USB memory or similar devices will be removed. - We will implement customizations tailored to your environment. Please let us know your requests, such as transferring all measurement data or only part of it. - We accept custom orders. We will accommodate previously delivered equipment as much as possible. Please feel free to consult with us. - For other functions and details, please download the catalog or contact us. - For more information, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

A new evaluation method for liquid membranes as an alternative to lamella length measurement has been devised! - Available as an option for the DyneMaster series of surface tension meters. - This evaluation method serves as an effective means for cases where clear differences exist in sensory evaluations, but differences are not easily visible in surface tension or lamella length measurements, making quantitative assessment difficult. - For other features and details, please download the catalog or contact us. *For more information, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

"Anti-fogging" refers to the technology and function that prevents fogging, and it is used in glass materials, lenses, glasses, and other transparent materials, as well as reflective materials like mirrors, where maintaining visibility is crucial, such as in building materials, vehicles, and bathrooms. One example of anti-fogging technology includes hydrophilic and hydrophobic treatments on material surfaces, and various anti-fogging technologies have been developed to prevent surfaces from fogging. At Kyowa Interface Science, we have a device that quantitatively and objectively evaluates the degree of fogging of glass and lenses from the perspective of "whether distant scenery can be seen clearly." It captures images of the fogging of transparent materials and mirrors and quantifies the degree of fogging using analysis methods such as brightness, contours, or compression. Our company offers contract measurements for contact angles, surface and interfacial tension, friction and wear analysis, adhesion and film peeling analysis, zeta potential, and anti-fogging evaluations. Contract measurements (contract analysis) are conducted using high-performance equipment, with dedicated measurement personnel handling everything from measurement to reporting. Please contact us if you need our services. *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

Particles with a negative charge are surrounded by ions with a positive charge, which is the opposite. Additionally, they are enveloped by a diffusion layer where both positive and negative ions are mixed, and these two layers together are referred to as the electric double layer. Moreover, when an electric field causes the particles to move and shear forces are applied, a boundary interface forms between the ions that move separately from the particles and the ions that accompany the particles within the diffusion layer. This boundary interface is called the "slip plane," and the potential at this plane is referred to as the "zeta potential." The zeta potential varies depending on the types and concentrations of ions in the surrounding environment. [Zeta potential meters we handle] ■ Concentrated systems / Particle size distribution and zeta potential meter ■ Diluted systems (particle observation) zeta potential meter *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

Adhesive tape has the basic characteristic of being able to bond instantly under relatively low pressure and can be easily peeled off, making it simple to handle and widely used in various fields. The method for measuring the peel strength of adhesive tape is defined by JIS Z0237:2009 (Test Methods for Adhesive Tapes and Adhesive Sheets), with the 180-degree peel test method and the 90-degree peel test method being the mainstream for testing and evaluation. The tensile testing machine proposed by our company has the following features: • Easy setting of the peel angle. • No special fixtures are required for changing the angle. • The stage movement speed equals the peel speed, allowing for simple setting of test conditions. • It is possible to measure the peel angle dependence of peel strength, which was previously difficult. • High-speed peel testing is possible. (VPA-H200: 30000 mm/min, VPA-H100: 12000 mm/min) • A spectrum of peel strength from low to high speed can be obtained in a single measurement. • It can measure very small peel forces on the order of 0.01 N. • Low-angle peel tests can be conducted while minimizing material deformation. • The camera and observation position are synchronized, making dynamic observation easy. (Optional) *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

In the field of interface science, there are interface phenomena that are very familiar to us in our daily lives, such as "wetting," "adhesion," "surface tension," "dispersion," and "emulsification." The resistance encountered when two solid surfaces in contact undergo relative motion is called "friction," and the force that arises during this process is referred to as "frictional force." Frictional force can be divided into static frictional force (static friction) and kinetic frictional force, where the former refers to the resistance until motion begins, and the latter refers to the resistance after motion has started. Additionally, the point within static friction that exhibits a significant resistance (the resistance just before motion begins) is called the maximum static frictional force. 【Products Suitable for Friction Measurement】 ■TSf-503 ■TSf-303 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

Liquids are in a state where molecules can move relatively freely. Focusing on the molecules present at the surface (more precisely, the "interface" between the liquid and the atmosphere), intermolecular forces act not only between the molecules on the bulk side but also between the molecules in the atmosphere. However, due to the overwhelmingly high density of the molecules on the bulk side, the molecules present at the surface are constantly being pulled inward (toward the bulk side). As a result, it appears that a tension is acting to contract the surface. This is known as "surface tension" (more precisely, interfacial tension). Our company offers contract measurements for contact angle, surface and interfacial tension, friction and wear analysis, adhesion and film peeling analysis, zeta potential, anti-fogging evaluation, and more. Please feel free to contact us when you need our services. *For more details, please refer to the PDF document or feel free to reach out to us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

For example, frying pans are processed to "repel" oil, making it "difficult for oil stains to adhere." If the windshield is treated to "repel" rainwater, there is no need to use wipers. Additionally, if coffee is spilled on a water-repellent suit, it will not leave a stain. The measurement of the sliding angle is an effective evaluation method for the "water-repellent (oil-repellent) properties" of such liquids and solids. We introduce "contact angle and sliding angle," "adhesion energy," "dynamic sliding method," and "value case studies of sliding contact angle meters." *For more details, please refer to the PDF materials or feel free to contact us. Our company offers contract measurements for contact angle, surface and interfacial tension, friction and wear analysis, adhesion and film peeling analysis, zeta potential, fogging resistance evaluation, and more. Even if you do not usually require measurements, please feel free to use our services if a temporary need arises, such as when clients request data or for investigating the causes of complaints.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

In the field of interface science, there are very familiar interfacial phenomena in our daily lives, such as "wetting," "adhesion," "surface tension," "dispersion," and "emulsion." Surface free energy is a term used when the surface tension is composed of several forces. The surface tension of solids is often referred to as surface free energy, in contrast to the surface tension of liquids. While surface tension (mN/m) is the force required to pull a line of unit length, surface free energy (mJ/m²) is expressed as the energy required to expand a unit area, and although the units are different, the values are equivalent. *For more details, please refer to the PDF document or feel free to contact us.*

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

The term that quantifies the degree of wetting is "contact angle." A well-cleaned "clean" glass surface wets well with water, while surfaces treated with fluorine coatings repel water. This phenomenon of "wetting" affects many phenomena not only in the field of engineering but also in the natural world. The "contact angle" is a very intuitive and easy-to-understand indicator of "wetting," and it is adopted as a surface evaluation method in various industrial fields. Our company continues to provide high-performance scientific instruments that allow customers to confidently publish the values indicated by measurements of "wetting" and "surface tension," contributing to the development of industries and the promotion of academia. Please feel free to contact us when needed. *For more details, please refer to the PDF materials or feel free to reach out to us.

• Contract manufacturing
• Other physicochemical equipment
• Contract measurement

DropMaster is the definitive surface and interface analysis system that has achieved "easy to use for anyone, maintainable performance, and immediate understanding of desired information," thanks to Kyowa Interface Science products, which have been loved worldwide since its founding as a specialized manufacturer of interfacial science measuring instruments. It caters to a wide range of needs, from reasonably priced image processing systems to fully automated control systems that enable labor-saving solutions. 【Features】 ○ A "reasonable" and "multi-purpose" surface and interface analysis system ○ A comprehensive lineup ○ Consideration for the environment and recycling ○ More compact with enhanced functionality For more details, please contact us or refer to the catalog. * We also accept commissioned measurements.

• Other measurement, recording and measuring instruments

"Main Contracted Measurement Items" - Static/Dynamic/Contact Angle (Wettability, Liquid Repellency, Cleaning Evaluation, Surface Free Energy Analysis, etc.) - Static/Dynamic Surface/Interfacial Tension (Permeability, Emulsification, Solubility, Wettability, Foaming, etc.) - Lamella Length (Foam Stability, Coating Pickup, Liquid Drainage, Wicking Evaluation, etc.) - Powder Wettability (Wettability of Powders, Wettability due to Surface Treatment/Surface Roughness of Powders, Wettability Evaluation based on Powder Permeation Rate, etc.) - Static/Dynamic Friction Wear Analysis (Friction Wear, Lubricity, Stickiness, Slipperiness, etc.) - Tensile Test (Adhesion, Angle Dependence, Light Peeling, High-Speed Peeling, etc.) - Zeta Potential (Particle Size Distribution, Dispersion Stability, Aggregation, Settling, etc.) - Anti-Fogging Evaluation (Degree of Fogging, Transparency, Condensation, etc.)

• Contract measurement

Simple, lightweight, and compact! A portable contact angle meter perfect for large substrates and actual measurements! Easy-to-use handheld type!

• Other measurement, recording and measuring instruments

The VPA series of adhesive and film peeling analysis devices enables simple and accurate peeling tests at any angle. We propose a testing method that controls the peeling angle with a different approach from conventional testing methods, called the "Flat Plate Cross Stage Method (Patent 4717156)." It is ideal for analyzing the adhesive peeling characteristics of various adhesive films, labels, and tapes, evaluating the adhesion of paints and coatings, and assessing adhesive properties. 【Features】 - Breaks the conventional concepts of peeling tests, realizing a groundbreaking evaluation method - Analyzes adhesive and peeling behavior from multiple perspectives with new ideas - Achieves peeling analysis with a compact design and flexible pulling angles - Allows for simple and accurate peeling tests at any angle - Adopts the unique testing method "Flat Plate Cross Stage Method" For more details, please contact us or refer to the catalog.

• Testing Equipment and Devices

The "AFA-2" is a measuring device that quantitatively and objectively evaluates the anti-fog properties of transparent materials from the perspective of whether distant scenery can be seen clearly. Transparent materials such as glass used in building materials, vehicles, and bathrooms, as well as lenses and glasses, or mirrors, have visibility assurance as one of their important functions. This product captures images of the fogging of transparent materials and mirrors, quantifying the degree of fogging using either brightness, contour, or compression analysis methods. 【Features】 ■ Quantitative evaluation of the anti-fog properties of mirrors and transparent materials ■ Evaluation of opaque materials such as aluminum and tiles is possible ■ Fogging evaluation in various situations is possible using natural condensation methods and humidification spraying methods ■ Can be installed horizontally or rotated 90 degrees ■ Quantitative evaluation of solid samples ranging from super hydrophobic to super hydrophilic is possible *For more details, please refer to the PDF document or feel free to contact us.

• Other physicochemical equipment
• Other measurement, recording and measuring instruments
• others

The DyneMaster series is a surface tension meter that consolidates all the technology, know-how, and applications cultivated over nearly half a century by Kyowa Interface Science Co., Ltd., a specialized manufacturer. With computer control, it significantly enhances the user interface. Packed with a variety of features, it achieves high operability that does not discriminate against the user. 【Product Lineup】 ○ High-Precision Surface Tension Meter DY-700 → An fully automatic surface tension meter that pursues high precision at a practical level to solve various interfacial phenomenon problems. ○ High-Function Surface Tension Meter DY-500 → A reasonably priced fully automatic surface tension meter that also boasts a variety of extensibility beyond just surface tension measurement. ○ Automatic Surface Tension Meter DY-300 → Automatically analyzes surface tension reliably. → A basic automatic surface tension meter. For more details, please contact us or refer to the catalog.

• Other measurement, recording and measuring instruments

Kyowa Interface Science Co., Ltd. has developed a rich lineup of measurement instruments specializing in evaluating surface properties such as wettability, slip, and adhesion. Kyowa Interface Science provides suitable solutions for various issues in the coating process. 【Product Lineup】 ○ 'Contact Angle Meter' that transforms "wettability" into technology ○ 'Surface Tension Meter' to understand the "force" of liquids ○ 'Friction and Wear Tester' that studies friction ○ 'Other Surface and Interface Related Products' such as adhesion, peel strength, and zeta potential For more details, please contact us or refer to our catalog.

• Testing Equipment and Devices
• Other measurement, recording and measuring instruments

The automatic dynamic tensiometer BP-D5 is a system that continuously measures dynamic surface tension from the moment the interface is formed by adopting the maximum bubble pressure method. Various controls and measurements are performed using the FAMAS software, which is also well-regarded for contact angle measurements in cooperative interfacial science. 【Features】 ○ Continuous measurement while varying the lifetime (20 to 5,000 ms) → Measurement up to 15,000 ms is possible as an option ○ Dynamic surface tension measurement at a constant lifetime is possible ○ Real-time display function of bubble pressure waveforms and LED strobe lighting function allow for monitoring the state of the bubbles ○ A series of operations from adjusting the probe depth to starting the measurement can be performed with the push of a button ○ During surface tension measurement, the temperature (°C) of the liquid sample can be recorded, allowing for temperature correction of surface tension for liquid samples with known temperature coefficients For more details, please contact us or refer to the catalog.

• Other measurement, recording and measuring instruments

The automatic friction wear analysis device, Triboster, is a friction meter proposed by Kyowa Interface Science, a specialized manufacturer of interfacial science instruments. Kyowa Interface Science has supported customers from a comprehensive perspective of surface and interfacial phenomena, addressing various issues that arise during the coating process. Leveraging this experience, we contribute to the evaluation of friction and wear characteristics of coating films and material surfaces. 【Features】 ○ Adopts a balance mechanism based on a new concept → Newly developed crank-type dual-axis balance ○ Does not detect unnecessary forces ○ Achieves more accurate acquisition of friction waveforms For more details, please contact us or refer to the catalog.

• Other measurement, recording and measuring instruments

In ZetaProbe, an alternating voltage is applied to the solution, and the zeta potential is measured from the ESA signal generated by the vibrations of colloidal particles. In high-concentration colloidal solutions, light cannot penetrate, making measurements using optical methods difficult; however, the electroacoustic method uses sound waves, allowing for the measurement of zeta potential even in more concentrated solutions. There is no need to worry about changes in electrolyte concentration or pH due to dilution. 【Features】 - Compatible with high-concentration and high-viscosity samples, allowing measurements in the original solution. - High-precision measurements possible using electroacoustic methods and multi-frequency analysis [patent obtained]. - Accurate zeta potential measurements can be made. → Signals from ions similar to those from particles are removed through background correction. - Parameters can be changed later for re-analysis. - An automatic titration system necessary for isoelectric point measurements is standard equipment. For more details, please contact us or refer to the catalog.

• Other measurement, recording and measuring instruments

You can download a comprehensive catalog of devices that support the analysis and optimization of interfacial phenomena in wet process coating, including contact angle meters, surface tension meters, friction and wear testers, zeta potential meters, and adhesive film peeling analysis devices, for free.

• Other environmental analysis equipment

Patterns etched onto wafers and glass substrates are becoming finer. The automatic micro contact angle meter (MCA) is gaining attention as the next surface evaluation device in the field of micromachines/MEMS.

• Other measurement, recording and measuring instruments
• Analytical Equipment and Devices

The analysis of the sliding method using conventional contact angle meters incorporates the concepts of sliding velocity and sliding acceleration, allowing for a comprehensive evaluation of droplet sliding behavior on inclined surfaces. This is expected to be widely adopted in the development of materials and coatings for water-repellent applications. (Technology provided by: Kanagawa Prefectural Institute of Industrial Technology, a local independent administrative agency) *KYOWA is pleased to offer customers a new proposal for a "dynamic sliding method" that adds time parameters to the conventional sliding method system.

• Other measurement, recording and measuring instruments
• Analytical Equipment and Devices

DyneMaster Series Surface Tension Meter CMC (Critical Micelle Concentration) Measurement Option Until now, CMC measurements were performed manually by adjusting the concentration, but by adding this kit to the DyneMaster series, concentration adjustment, stirring, and surface tension measurements can be automatically conducted until reaching the CMC (Critical Micelle Concentration).

• Weight related measuring instruments

The optical system and software have been completely renewed. With automation through computer control, it has become easier to use.

• Other measurement, recording and measuring instruments

Powder is a collection of finely crushed solids and possesses unique properties that differ from the three states of matter: solid, liquid, and gas. This leads to various challenges in research and development as well as in production environments. Today, powders have become essential in a wide range of fields, from pharmaceuticals, food, and cosmetics to advanced industries such as paints, batteries, and nanotechnology. While the use of powders and processed products is generally in the form of tablets or dispersions, in order for them to fulfill their roles as products, the penetration of liquids and wettability are important factors in almost all cases, regardless of the form. The measurement of liquid penetration speed and contact angles in powders is an old yet new technology, and by utilizing the latest know-how, it is possible to obtain reproducible data.

• Other powder equipment

A versatile and lightweight peeling analysis device that adopts our unique testing method, the "Flat Plate Cross Stage Method," enabling easy and accurate peeling tests from all angles.

• Testing Equipment and Devices