Jinan Youlyy Industrial Co., Ltd.

The core supplier in pharmaceutical packagings

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Tubular Glass Vial ​Hydrolytic resistance
- Aug 04, 2018 -

When tested in accordance with ISO 4802-1 or ISO 4802-2, the hydrolytic resistance of the internal surface of

injection vials shall comply with the requirements specified for one of the following hydrolytic resistance

container classes:

⎯ ISO 4802 – HC 1

⎯ ISO 4802 – HC 2

⎯ ISO 4802 – HC 3


The tubular glass vial produced by Youlyy Industrial Co., Ltd can reach the water resistance values 0.75, in accordance with the HC1 grade required by the ISO standard.


This is an important technical improvement. It marks that our tube production technology has reached the advanced level in the industry!