One Company


We have been processing and working with laboratory glass and technical glass since 1952. The production of our products is carried out by qualified personnel and is subject to constant control. This allows us to guarantee high QUALITY STANDARDS now and in the future.

Since 1969 we have been producing thermal ampoules for smoke and heat exhaust systems and sprinklers. Geissler is now one of the LEADING SPRINKLER GLASS AMPOULE MANUFACTURERS worldwide.

100% Made in Germany


It goes without saying that GEISSLER is certified according to DIN EN ISO 9001 : 2015. Furthermore, only certified companies are approved as suppliers. Both our products and our production methods are subject to constant control. Great emphasis is placed on occupational safety and environmental compatibility. The imprint of batch numbers ensures the TRACEABILITY of each ampoule back to the raw glass.


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