Gas Chromatography
Cyclodextrins are oligosaccharides formed from the bonding of six to twelve glucopyranose (sugar) units into a cyclic, cone shaped structure. The number of sugar units varies from 6 to 12. Three sizes are commonly used in the manufacture of commercially available GC phases: alpha, beta & gamma corresponding to 6, 7 and 8 glucopyranose units …more
Conventional retention gaps offer a wider range of applications than Intelligent Retention GapsTM.
Typical uses are automated on-column injection, direct injection of large volumes and/or dirty samples.
Conventional retention gaps are lengths of fused silica tubing internally deactivated for:
General purpose applications
Apolar solvents
Polar solvents
Retention gaps are supplied without press-fit or ferrule type connector which are available separately.
Lengths available …more
•red® capillary GC columns can be supplied with an ‘intelligent’ retention gap for use at the injector end of the column.
These are an extension of the analytical column tubing with no union required between the deactivated and analytical column sections.
In addition, columns can be produced having the deactivated section at the detector end either as …more
For use with the Permeation Calibration System.
The permeation tubes are teflon / PTFE tubes filled with a specific component in a liquid-vapor phase. The permeation rate of the tube is a direct function of the temperature.
Tubes are supplied with a Certificate of Calibration showing permeation rate in ng/min plus expected useful lifetime of the permeation …more
100% Methyl siloxane
DR-1 phase is a 100% Methyl siloxane phase for GC columns.
DR-1 phase is Low Polarity
DR-1 phase GC columns are equivalent to:
Agilent/J&W: DB-1, HP-1
Alltech (Grace): AT-1
Phenomenex: ZB-1
Quadrex: 007-1
Restek: Rtx-1
SGE: BP-1
Supelco:SPB-1
Varian: CP-Sil 5CB
A complete range of GC Capillary columns. Large selection of phases, lengths, diameters and film thickness
Fast, Conventional and Wide Bore GC columns available.
Stationary phases include, High Polarity (eg. 100% Cyanopropyl Polysiloxane), Apolar (eg. 100% Polydimethylsiloxane) and Intermediate Polarity (eg. 20% Phenyl, 80% Methyl Polysiloxan). Many other phases available, including phases for specific applications like …more
The Nitro-F Nitrogen Generator is based on the hollow fiber technology, enabling the separation of air into Nitrogen and Oxygen enriched air from an external compressed air supply.
Safe, small, simple and silent
Upto 120L minute nitrogen gas can be produced using this line of gas generators
The Nitro-F is designed for LCMS applications by …more
2mL Crimp Cap Autosampler Vials
Large opening vials with 11mm crimp neck finish
1.8mL volume, standard size of 12×32mm diameter x height
Excellent for long term storage
Clear vials made from Type I Class A glass (33 expansion)
Amber vials made from Type I Class B glass (for light sensitive product)
Requires crimper (and decapper)
Sold …more
A constant uninterrupted supply of hydrogen gas in essential for many laboratory applications
As with all dot-red laboratory gas generators the Ultra Pure H2 Hydrogen Gas Generator is ideal for replacing bulky hydrogen cylinders in the laboratory.
This series of laboratory Hydrogen Gas Generator is suitable for generating Hydrogen Gas for all laboratory applications, including hydrogen carrier …more
The calibration gas generator from dot-red uses the technology of permeation. The permeation tubes are Teflon tubes filled with a specific component in a liquid-vapor phase. The permeation rate of the tube is a direct function of the temperature. With the dot-red calibration gas generator, a large scale of concentrations can be reached by changing the temperature or by modifying the dilution air flow. The device automatically calculates the flow in dependence of the requested final gas concentration.
External Ultra Zero Air generator is required to dilute what is going out of the permeation oven.
Laboratory Gas Generators