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- General laboratory consumables
- Occupational safety, Security
- Analytical measurement and testing
- Stirring, Shaking, Mixing
- Sample preparation
- Distillation, separation, filtration
- Heating and cooling technology
- Liquid Handling
- Vacuum technology, Drying, Dry storage
- Optical instruments and microscopes
- Cleaning and sterilisation
- Environmental-, soil-, water-, food analysis
- Chromatography
- Cleanroom
Test tubes
Test tubes are available in various shapes, for example with round, conical or straight bottom as well as with beaded or straight rim. Depending on the type, the test tubes are suitable for chemical reactions, examinations, for storing of small quantities of liquids, cultivation of bacteria and much more. The test tubes can be sealed with plastic foils, aluminium caps, cork or plastic stoppers, Please see the separate section on stoppers, closures and lids.
Sample hydrolysis and digestion vessels
For the digestion of small sample volumes up to 0.5g in microwave ovens. Made of isostatically pressed, high-grade PTFE (TFM). The chemical resistance and usual PTFE properties remain unchanged. TFM is a modified PTFE by Hoechst and contains thermoplastic elements. This gives rise to a homogeneous, non-porous surface. Contaminating residues from earlier digestions are therefore avoided. Resists pressure deformation (to max. 25 bar) and temperature (max. 160 °C). An accessory burst-proof, sealing membrane prevents loss of volatile compounds and provides safety against overpressure. Optional digestion vessels with interchangeable inserts (internal liners) enable precise weighing-in (in most cases the complete vessels would be too heavy for balances). In addition, different digestion processes can be carried out in only one basic vessel by using several inserts....
