Berghof offers warranty on microwave digestion vessels. A warranty on consumables is that even possible? It is and provides an equipment warranty for its microwave digestion vessels. With this, pressure vessels are no longer seen as being consumables. This allows users to annually save several thousands of Euros previously spent on replacement vessels. For 10 years BERGHOF has successfully manufactured solid and durable TFMTM-PTFE pressure vessels for microwave digestion applications and quotes 3 to 5 year service lives for its vessels, depending on their area of application and frequency of use.