Technical information

BOLA Hydrolyzing and Digestion Vessels for Microwave Ovens

Microwave ovens are often used for making quick and easy digestions. The energy of a microwave oven penetrates the material of the vessel almost without any loss. It only heats the liquid within a few seconds over the boiling point.

BOLA Digestion Vessels are made of TFM, a modified PTFEGlossaryPTFE Polytetrafluoroethylene with thermoplastic parts for a homogenous, non-porous surface which avoids contaminations and memory effects.

They are available in 2 versions:
» Cat. No. A 240-..: consisting of basic vessel, screw cover and mounted sealing and rupture membrane.
» Cat. No. A 250-..: consisting of basic vessel, screw cover, mounted sealing and rupture membrane and exchangeable liner which allows a more precise weighted sample and different digestions with only one basic vessel.

As soon as the pressure exceeds the maximum limit, the rupture membrane bursts and the released liquid will be drained through an optional tubing (O.D. 6,35 mm / 1/4”) into a separately available collecting vessel.

Plastics in microwave ovens

Plastics in general and fluoroplasticsGlossaryfluoroplasticsbelong to the group of thermoplastics. with their high thermal resistance in particular are suitable for microwave energy. The microwaves heat solely the contents of the vessel. Fluoroplastic vessels are particularly suitable for heating of aggressive chemicals such as acids or solvents. However, it should be noted that produced vapours are sufficiently drawn off. The more, a controlled drainage to a collecting vessel has to be arranged in case of bursture of the rupture membrane in the digestion vessel. Other vessels or containers than digestion vessels may only be heated when open.