Air regulator Type HM-2
For tubes:8mm to 15mm diameter, 6mm to 12.5mm diameterFor air-leak capillary tubes. Acts as a fine regulation valve (needle valve). Plastic body. Brass needle with fine thread.
Boiling chips, type Resistent
Developed for preparatory and analytical purposes. Suitable for biochemistry, biotechnology, microbiology, microanalysis. Can even be used in strong acids and alkalis, and in all solvents and oxidants. Suitable for vacuum and high-vacuum distillation. Reduces distillation times in rotary evaporators. No abrasion, absorption of substances or solvents. Softening (evaporation) occurs at 2500°C. Can be sterilised by dry heating. Effective in even the smallest volumes of liquid, even after multiple interruptions. Prevents any bumping. Highly resistant.
Boiling stones behrotest®
behrotest® boiling stones are made from a ceramic material. Compared to conventional boiling stones made of glass, they provide optimum protection against defervescence due to their porosity and their shape, even with badly blended samples.behrotest® boiling stones are chemically pure and guarantee unadulterated results when determining the COD, the Kjeldahl nitrogen etc.
Boiling stones, PTFE
Prevents bubbling and bumping when boiling a medium.Long lifeUniversal chemical resistanceOperating temperature -200 °C to 250 °C
Boiling stones, Type A
Developed for use in preparatory work. For distillation and reflux in aqueous, neutral and alkaline solvents, even under a vacuum. Effective in even the smallest volumes of liquid and after multiple interruptions. Prevents any bumping. Natural product.
Boiling stones, Type B
Specifically for analytical work. Can be used for distillation in a clean, neutral and basic environment. Not suitable for vacuum distillation. Effective in the smallest amounts of liquid, also after multiple distillations. Prevents " bumping". Ceramic product with relatively high level of purity and abrasion resistance.
Gas inlet tube with valve stopcock, DURAN® tubing
Made of DURAN® tubing. With valve stopcock for dosing, with glass olive (angle: 90°).
Gas inlet tubes, bent, DURAN® tubing
Made of DURAN® tubing. Bent air leak tubes (angle: 90°), built-in length: 250mm, with NS cone and thin capillary (easily to draw by burner).
Gas inlet tubes, straight, ground glass joint, DURAN® tubing
Made of DURAN® tubing. Straight air leak tubes, built-in length: 200mm, with NS cone and thin capillary (easily to draw by burner).