This compact micro torch is ideally suited for melting the ends of sample tubes precisely and safely. As a very small flame can be adjusted, it is possible to melt the capillary precisely at a defined point without excessively heating the remaining capillary, as is the case with standard torches. The torch is operated with a hydrogen/oxygen or a propane/oxygen mixture, both of which provide a very hot flame that even permits quartz glass to be processed. This torch is an extremely versatile tool with which practically all types of glass can be processed – from simple flaming to highly complex tasks.

Features of the micro torch

  • Fine, concentrated needle-point flame
  • High heating capacity
  • Mixed-gas operation
  • Two separate needle valves
  • Complete with fine nozzles
  • Torch length >130 mm (without nozzle)

Operating principle

The torch consists of a gas mixing chamber and two gas inlets, which are also suitable for aggressive media such as hydrogen and oxygen. Two needle valves at the front of the mixing chamber are used to regulate the gas flows separately and precisely. The torch comes complete with an angled nozzle that has an internal diameter of 0,3 mm.


On request, we can supply a table holder that greatly simplifies your work. By clamping the torch in the holder, both hands are kept free to hold the test tube during melting. Moreover, the torch flame is kept absolutely steady.

For highly specific work, we can also supply a special stainless steel nozzle fitted with a ruby insert in the tip that has an orifice of only 0,18 mm. This nozzle permits extremely fine and hot flames to be used.

In order to generate more heat simultaneously, we can provide a distributor that permits the use of two nozzles at the end of the torch.

Application areas

  • Melting the ends of capillaries and test tubes
  • Sealing and flame burnishing of glass capillaries
  • Fine soldering & brazing work
  • Glass tube with side-opening
  • Glass fibers with sphere formed end
  • NMR Tubes with thread for low vacuum applications
  • Mark tubes with special inner surface
  • Mini test tubes with extended flange
  • New preform for redrawing of capillaries
  • Test tubes with sagging at the bottom
  • Cloning cylinders with numbering
  • Large-volume theta cross-section capillaries
  • High tightness with new standard cap
  • Complex component made of quartz glass
  • Dropper pipettes in many sizes and designs
  • Packing glasses protected from light
  • Ampoules with built-in test leckage
  • Thick-walled sample vessels
  • Measuring ampoules with conical bottom
  • Special glass capillaries for measurements
  • Glass capillaries with constriction
  • Finely scaled glass cannulas
  • CNC processing of glass plates
  • New 5 mm NMR standard caps
  • Glass crucible for thermal analyses
  • Glass capillaries with graduation
  • Square capillary with 9 internal channels
  • 9-fold capillary made of borosilicate glass 3.3
  • Our tool for cutting glass capillaries
  • Diamond wire for cutting capillaries
  • Sight glasses (laser structured)
  • Very thick-walled capillaries
  • Polyimide coated filling needles
  • Ampoules with small volume
  • NMR tubes colored (UV protection)
  • NMR septum caps (increased denseness)
  • NMR tubes (barcode & constriction)
  • Mark tubes with perforated bottom
  • Test tubes with hole e.g. as vent
  • Test tubes with grooved rim
  • Oval capillaires (thin-walled)
  • Triangular capillaries (thin-walled)
  • Twisted capillaries by hot forming
  • Multi-channel capillaries (circular array)
  • Special light pipe made of glass
  • Luggin-capillary for measurements
  • Test mandrels (different materials)
  • Carpoules with special-rolled rim
  • Glass capillary for the stimulation
  • XRD-capillary with Luer-connector
  • Glass nozzle with seal-and retaining ring
  • Glass capillary with side-mounted connectors
  • Easily destructible glass ampoules
  • Glass rods with surface patterning
  • Long-conical focusing nozzles
  • Surface patterning of glass substrates
  • Laser sublimation-drilling in flat capillaries
  • Thin needles up to 180 ° flexible
  • Glass needles with curved tip
  • Polished to precision glass rings
  • Glass rods with partially-frosted surface
  • Sealing glass with high thermal expansion