The Excellent Performance of Glass Syringes

The syringe is a core component in the liquid path of physico-chemical analytical instruments. It provides power for liquid flow, precisely controls the sampling volume of liquid reagents, and, combined with various valves, can control the direction of reagent flow, transporting reagents or samples through the pipeline to various detection units.

The Materials, Processing Technology, and Cost of Glass Syringes

Currently, the mainstream syringes in the market are categorized based on materials: they can be made of glass, ceramic, plastic, stainless steel, etc. Based on the form of piston sealing, they can be divided into end-face sealing type and axial sealing type. Based on the processing type, they can be divided into machining type and mold type. Glass syringes belong to the machining type, while plastic syringes can be of either machining type or mold type.

The material of glass syringes

Glass syringe has high borosilicate glass as the main material, (resistant to acid, alkali, and water, with excellent corrosion resistance, good thermal stability, chemical stability, and electrical performance, hence having characteristics of chemical corrosion resistance, thermal shock resistance, good mechanical performance, high-temperature resistance, etc.), with a very low thermal expansion coefficient and a Mohs hardness of about 6.5.

The processing of glass syringes

The processing technology directly determines the precision and quality of the syringe, the processing technology of the glass syringe mainly involves the rough processing of glass tubes (extrusion and stretching), fine processing (milling the outer shape, polishing the inner hole), machining of stainless steel parts, PTFE/UHMWPE piston head machining, gluing of glass tubes with stainless steel joints, and assembly. Basically, only inner hole polishing is technically challenging, while others are very basic processes.

The cost of glass syringes

Glass syringes use the cheapest and most reasonable materials, simple processing technology, and general parts, making them the lowest-cost combination compared to plunger-type and ceramic syringes. Plunger-type syringes have various shapes that are difficult to process and cannot be used universally. Ceramic syringes have high material costs and take time to process. Especially for large capacities like 10mL and above, the cost of a ceramic rod accounts for a large proportion, whereas glass syringes can achieve the same function with just a thicker piston head.

Glass syringes have played an important role in the development of the medical and health industry, contributing all their power to human health. Keyto, as a high-quality supplier of glass syringes, can provide you with syringes of various capacities, ensuring that glass syringes have extremely high and stable metering precision and accuracy throughout their lifecycle.