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At Daicai Giken, we manufacture and sell rheometers (viscoelastic measurement devices). Along with the introduction of the air-bearing-less rheometer (viscometer) 'ONRH type', we are publishing technical explanation materials. 【Contents】 1. About Rheology 2. Benefits of Viscoelastic Measurement 3. About the Viscoelastic Measurement Device Rheometer 4. Visualization of Measurements (Example of Foam Detergent) 5. International Patent Technology "Elastic Hinge Bearing Mechanism" 6. Other Features and Measurement Values (Stability Test of Coffee Creamer, Gelation of Dilute Gelatin) The materials are organized in an easy-to-understand manner using various data, images, and real examples. Please download the PDF and take a look.

• Viscometer
• Other physical property measurements and component analysis
• Other analytical and testing equipment

This is a rheometer suitable for rheological measurements of low-viscosity liquids, employing a double cylindrical method with an outer cylinder rotation (capable of measuring viscosity and elasticity). The torque measurement section features a practical elastic hinge bearing developed by AIST, achieving high-sensitivity torque measurement without using air bearings. This eliminates the need for clean air management, allowing for more flexible installation locations. It also contributes to CO2 reduction. Additionally, it is easy to maintain and offers advantages in size and cost. New measurement method: Dynamic viscoelastic measurements can be performed under steady flow conditions. Please give it a try. 【Features】 - Outer cylinder rotation, inner cylinder detection method with a separated drive and detection axis (strain-controlled type) - Easy sampling due to the upper support method for inner and outer cylinders - The standard glass outer cylinder allows observation of the sample's condition from the outside during measurement - The standard sample volume is relatively small, around 4ml (minimum approximately 2.5ml) - Various measurements, including dynamic measurements, can be easily performed *For more details, please download the materials or contact us.

• Viscometer

This is a graph of the gelation of a dilute gelatin aqueous solution measured by a rheometer. • In the first few hours, only G” increases, and later G’ rises, surpassing G” and resulting in gelation after about one day. By the way, at a stiffness of 1 Pa, it cannot maintain its shape when taken out and will flow (edible jelly has a stiffness of several hundred 100 Pa). *For more details, please refer to the PDF document or feel free to contact us.

• Analytical Equipment and Devices

• It has been found that the elastic modulus G' of the spherical sample increases over time. • This indicates the potential for use in product stability testing. * Note that the measured strain amount is small at 1% due to the subsequent strain dependence. * For more details, please refer to the PDF document or feel free to contact us.

• Analytical Equipment and Devices

Measurement example by sample observation [Foam Hand Soap] The images show the final state immediately after sampling and after high shear measurement. • The state of the foam becomes finer under high shear. • When the shear is not large, coalescence and rising of the foam occur. • It can be seen that the viscosity and dynamic viscoelastic co-measurement values change in correspondence with the state of the sample before and after applying high shear rate. • The viscosity increases in response to the foam becoming finer. • The elasticity increases as the foam becomes finer. *For more details, please refer to the PDF document or feel free to contact us.

• Analytical Equipment and Devices

We would like to introduce a case study of viscoelasticity measurement using the 'ONRH-type rheometer' handled by Daicai Giken. In a measurement example through sample observation, when measuring foam hand soap, changes were observed where the viscosity increased in response to the foam becoming finer. The materials explain the shear rate dependence of viscosity, as well as frequency dependence and viscoelastic strain amplitude dependence, using graphs. 【Features】 ■ Supports rheological measurements of various samples ■ Temperature control with a dedicated constant temperature bath ■ Collaboration of rheological measurements with other measuring devices *For more details, please refer to the PDF materials or feel free to contact us.

• Analytical Equipment and Devices

This is a rheometer suitable for rheological measurements of low-viscosity liquids, adopting a double-cylinder method with an outer cylinder rotation (capable of measuring viscosity and elasticity). The torque measurement section features a practical elastic hinge-type bearing developed by AIST, achieving high-sensitivity torque measurement without using air bearings. This eliminates the need for clean air management, allowing for more flexible installation locations. It also contributes to CO2 reduction. Additionally, it is easy to maintain and offers advantages in terms of size and cost. New measurement method: Dynamic viscoelastic measurements can be performed under steady flow conditions. We encourage you to give it a try. 【Features】 ○ Outer cylinder rotation, inner cylinder detection method with separate drive and detection axes (strain-controlled type) ○ Upper support method for inner and outer cylinders facilitates sampling ○ The standard glass outer cylinder allows for observation of the sample's condition during measurement ○ The sample volume is relatively small, with a standard of about 4ml (minimum approximately 2.5ml) ○ Various measurements, including dynamic measurements, can be easily performed *Please feel free to contact us for more details.

• Viscometer

The "NRM-200 Series" is a rotational viscometer with a cone plate (standard) configuration. The measured data can be subjected to theoretical analysis, making it suitable for viscosity and flow measurements of non-Newtonian liquids. Additionally, it allows for stable viscosity measurements at high shear rates, enabling flow measurements that correspond to actual working conditions in coating, spraying, and printing. 【Features】 - The shear rate can be measured consistently at any part of the sample, allowing for theoretical calculations of the measurement data. - Shear rates of up to 18,000 s⁻¹ can be achieved (when using 1,000 RPM). - The measurement sample volume is less than 1 mℓ. - The gap between the cone and plate is set using an electrical sensing method and a micro-adjustment mechanism. - The sample history prior to measurement can be controlled programmatically. *For more details, please feel free to contact us.*

• Viscometer

The "L-A type viscometer (compliant with JIS K5701-1-2000)" is a so-called axial type viscometer with a shaft that moves in the length direction and has a concentric cylindrical shape. It can measure viscosity and yield value, which are important parameters for quality control of high-viscosity substances such as printing inks and varnishes. Shear rate and shear stress can be easily expressed through calculations. 【Features】 ○ Very easy to operate ○ The sample is placed in the gap between a temperature-controlled ring and a rod with applied load ○ Viscosity and yield value can be measured by measuring the descent time over a specified distance *For more details, please feel free to contact us.

• Viscometer

The friction coefficient meter "NRF Series" is a device for measuring the friction coefficient when filaments, tapes, hair, etc., come into friction with other materials, as well as for measuring the temporal changes in the friction coefficient due to the wear of the sample or the material being rubbed. It allows for variable friction speeds and sample tension, and measurements can be taken by changing the material being rubbed as needed. The measurement of the friction coefficient of filaments, fibers, hair, etc., can be easily and reproducibly performed by anyone. The measurement is simply done by applying the sample and rotating the pulley at a specified speed. 【Features】 ○ For samples with scales, such as hair, it can measure the friction coefficient when the friction direction (rotation direction) is changed. ○ The effect of lubricants and other factors on friction or wear can be measured. ○ Wear tests can be conducted. ○ The influence of the material and processing precision of pulleys, etc., on the same sample can be understood. ○ The force applied to the pulley shaft can be measured. *For more details, please feel free to contact us.

• Other measurement, recording and measuring instruments

■Presenters Kanako Sato, Isamu Kaneda <Paper Title> "Gelation Behavior of Egg White Protein Aqueous Solution Near the Thermal Setting Temperature" Proceedings of the 65th Rheology Discussion Meeting (2017) ■Presenters Shogo Shibata, Isamu Kaneda <Paper Title> "Rheological Properties of Complexes Formed by Saxagliptin and Egg White Protein" Proceedings of the 65th Rheology Discussion Meeting (2017) ■Presenter Isamu Kaneda <Paper Title> "Rheology of Egg Dishes" Journal of the Japanese Society of Biorheology 31(2) 37 (2017) ■Presenters Kanako Sato, Isamu Kaneda <Paper Title> "Gelation Behavior of Concentrated Aqueous Solution of Dried Egg White at Low Temperature" Journal of the Japanese Society of Biorheology 31(2) 97 (2017) *If necessary, we can send the literature upon request. *You can view the materials for the rheometer 'ONRH type' from the download section.

• Analytical Equipment and Devices

Daisai Giken Co., Ltd. was established with the aim of popularizing high-performance rheometers, including the ONRH type, through the transfer of excellent technology and human resources from the National Institute of Advanced Industrial Science and Technology. The ONRH type rheometer is a high-performance, double-cylinder rotational rheometer without air bearings, capable of stably measuring low-viscosity samples. It is a "National Institute of Advanced Industrial Science and Technology technology transfer venture" that always aims for the "advancement of technology" sought by our customers. 【Products】 ○ Rheometers ○ Contract sample measurement ○ High shear viscometers ○ L-A type viscometers (compliant with JIS K5701) ○ Friction coefficient meters, NRF type *Please feel free to contact us for more details.

• Viscometer
• Other measurement, recording and measuring instruments