The 4ml screw vial produced by Aijiren uses first-grade hydrolyzed glass, which is resistant to strong acids and has a long service life. The threaded port is designed with a threaded cap, which has good sealing performance and is not easy to fall off. The vial has complete specifications, uniform scale on the surface, and easy to read. The inside of the vial cap is equipped with a silicone gasket, which has good sealing performance and is not easy to leak.
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