Berghof provides an equipment warranty for its microwave digestion vessels. Pressure vessels are thus no longer seen as being consumables. According to the manufacturer, this allows users to annually save several thousands of Euros previously spent on replacement vessels. For ten years the company has manufactured solid and durable TFM-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.