KBr Pellet Dies
For powder samples, a common way to do things is with the KBr pellet method. Samples are crushed into a powder with a laboratory-grade mortar and pestle and mixed with KBr powder at a ratio of 1:100 and then installed into a pellet-forming die. The fun part comes next, where a force of about 8 tons is applied via hydraulic press to convert the powder into a transparent pellet. The next phase involves degassing to eliminate moisture and finally drying off. Once pellets are ready they can be inserted into a pellet holder, which snaps into a standard FTIR spectrophotometer holder.
Water-Jacketed Evacuable KBr Pellet Dies
Water-Jacketed Evacuable KBr Pellet Dies
Allows heating of solid samples while under pressure, when electrical appliances cannot be used.
Boiling water is passed through flow through tube and circulates heating the die body to between 80-100ºC.
Water jacket can also be used to cool sample under pressure
Dies suitable for producing discs of 5, 6, 8, 10, 13, and 16mm diameter as available as standard within the size range for the KB-WJ series. Non-standard sizes are available on request.
KBr Disc Technique: This widely practiced method consists of grinding and mixing a sample with dry KBr or KCl powder, which is then compressed within an evacuated die to produce a transparent disc, since KBr and KCl are transparent from the ultra-violet well into the infrared. The method may be used for investigation in the ultra-violet and the visible as well as the infrared region.
All dies in the KB series are constructed entirely of stainless tool steel, and parts are precision machined.
Pellets are optically flat and mirror polished.
Tungsten carbide pellets and component parts can be supplied to special order.
Dies are supplied with black anodised sleeves.
Maximum load limits:
3mm die- 0.5 tons
5mm die- 2 tons
6mm die- 2 tons
8mm die- 5 tons
10mm die- 7 tons
13mm die- 10 tons
16mm die- 15 tons