#Japan #Tokyo #Advanced Analytics #Nippon Kinzoku #Capillary Tubes

Nippon Kinzoku's Innovative High-Precision Capillary Tubes

Nippon Kinzoku Co., a leading manufacturer based in Tokyo, has embarked on a new journey by establishing a sample provision system for its state-of-the-art capillary tubes. These tubes boast exceptional internal surface smoothness, significantly enhanced through proprietary polishing techniques, catering specifically to the rising demands for extremely small diameter sizes in analytical equipment and medical biotechnology industries.

Background of the Development: Increasing Demand for 'Small Diameter x Ultra-Smooth'

Over recent years, there has been a swift increase in demand for high-performance analytical and medical instruments. Specifically, smaller diameter and smoother internal capillary tubes have become a necessity. Nippon Kinzoku previously developed precision tubes using austenitic stainless steel, achieving an internal diameter of 0.50 mm with a surface roughness less than Ra 0.5 µm. With insights derived from this successful track record, the company has now advanced to producing tubes with even finer specifications— those with an internal diameter of 0.30 mm.

Capillary tubes play a vital role in modern analytical devices, such as High-Performance Liquid Chromatography (HPLC) and Gas Chromatography (GC). These tubes connect the analysis column with high-pressure pumps and detectors, ensuring effective workflow in laboratories. Recent advancements have led to an increased need for tighter tolerances and enhanced internal surface characteristics, like roundness and smoothness, to improve the overall efficacy of these equipment.

Features of the High-Precision Capillary Tubes

The new capillary tubes are crafted from austenitic stainless steel, guaranteeing high corrosion resistance and durability, which makes them suitable for various applications—not just in analytical devices but also in the medical and semiconductor fields. Key highlights include:

• - Remarkable Internal Smoothness: Surface roughness is reduced from the previous standard of Ra 0.5 µm to an impressive Ra 0.2 µm or less.
• - Superior Dimensional Accuracy: Successfully maintaining an internal diameter tolerance of ±0.03 mm for extremely fine diameters ranging from 0.30 mm to 0.70 mm.
• - Wide Application Range: Enhanced corrosion resistance allows their use in high-purity gas delivery systems and various biomedical applications.

Future Outlook

Currently, Nippon Kinzoku aims to achieve mass production of these innovative capillary tubes by the fiscal year of 2027. This endeavor aligns with the company’s 11th management plan,