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About product and suppliers:
        Alibaba.com offers 12,599 glass test tube products. About 32% of these are test tube, 1% are packaging tubes, and 1% are plastic tubes. 

A wide variety of glass test tube options are available to you, such as paper, glass, and plastic. You can also choose from hot stamping, screen printing, and offset printing. As well as from clear quartz pipe, insulated glass, and tempered glass. And whether glass test tube is free samples, or paid samples. 

There are 12,571 glass test tube suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Pakistan, which supply 99%, 1%, and 1% of glass test tube respectively. 

Glass test tube products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 2,340 with ISO9001, 1,985 with Other, and 1,297 with ISO13485 certification.