Digestion devices take responsibility for the initial stage of the Kjeldahl process and are often considered among the most sensitive and accurate laboratory equipment. There are three heating systems in these devices, which will include oven, infrared, and microwave. It is a cost-effective and cheap infrared oven with no heat loss and long life and a fast and expensive microwave oven. Bakhshi Laboratory Industries has used part of the second type and has provided you with some of the best and highest quality models of these tools available in the Iranian market. Meanwhile, the twenty-four model has the largest testing capacity and is considered the largest device in this series.