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Our lab glassware factory was established in 1967, it is the first one passed through the certificate of ISO9002 system in all of lab glassware manufacturers in China. We are of the member of the National Glass Instrument Standardization Committee. For many years, we have been participating in drafting and revising the national standards of glass instruments. Our products are in good sales in USA, Italy, Spain, Russia, Ukraine, Iran, Brazil, Argentina etc, and enjoy very good reputation. For the Iodine Flask, it belong Conical Flasks ,It include 1123 Iodine Flask, conical, wide spout with standard ground mouth 5009 Flasks, Conical (Erlenmeyer) standard ground mouth 1120 Erlenmeyer flasks Wide Neck with Graduation DIN 12385 1121 Erlenmeyer flasks Narrow Neck with Graduation DIN 12380, ISO 1773 We also can makeboiling flask and otherlab glasswareaccording to the clients' inquiry. If youare interested in our products, please do not hesitate to contact us, we will give you prompt attention.