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Chromatography / Stationary phases / More about chromatography

Dosing pumps

Dosing pumps

Dosing pumps are used in many applications, in laboratories and within industry. Often we see the needs, when we require dose liquids under specific conditions:

  • High pressure dosing (reaction chambers, aparatures)
  • High temperatures dosing
  • Injection of reactive substances
  • Dosing of viscous media

Pump HeadFor all above mentioned applications it is possible to use technology that has been proven in the area of high performance liquid chromatography (HPLC). These are double-piston pumps AZURA (Knauer), which use sphire pistons enabling precise continuous dosing under high pressure. These pumps can work with flow of 0,01 to 1000 ml/min, under temperatures of -10°C to +120°C and with viscous media up to 1000 mPa.s.

The pumps can be especially equipped so they can be used in specific application like hazardous areas.

Nice example of use of AZURA pumps is dosing of sulphur trioxide in production of methanesulfonic acid (MSA).

Materials

Pump head are available in following materials:

  • Ceramic
  • Hastelloy C-276
  • Stainless steel
  • Titanum
  • Stainless steel/Titanum

Further information about models are available here.

 



ZB-MultiResidue 1

(Application Specific Phase)GC columns

  • Proprietary phase specially designed for the separation of all types of pesticides.
  • When used in parallel with the Zebron MR-1 and MR-2 column, provides baseline resolution and confirmation of all 20.chlorinated pesticides regulated under EPA Method 8081 in <10 min.
  • MS Certified phases provide low bleed performance for pesticide confirmation by MS.
  • Low activity, decreased breakdown of sensitive pesticides such as DDT.
  • Provides robust column performance for high temperature bake outs.
  • ESC Equipped.

Zebron MultiResidue columns provide baseline resolution of all EPA Method 8081A chlorinated pesticides in less than 10 minutes. In calibration curves ranging from 5-250 ppb, the columns provided results that far exceeded the EPA requirements for % breakdown of DDT and Endrin, linearity (% RSD), and resolution of critical isomers.

The unique selectivity offered by each phase allows for increased resolution of critical compounds vs. standard 5ms type phases. Retention time data is available for over 300 different pesticides on GC/MS, further simplifying new method development.

Applications
  • Aroclors/PCBs
  • Multi-pesticide Residue Methods
  • Haloacetic Acids
  • Nitrogen Containing Pesticides
  • Organochlorine Pesticides
  • Organophosphorous Pesticides
  • Herbicides
  • Insecticides
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.25 -60 to 320/340
0.32 0.50 -60 to 320/340
0.53 0.50 -60 to 320/340

ZB-35 HT Interferno

(35% Phenyl 65% Dimethylpolysiloxane Phase)GC columns

  • First non-metal, 35 % phenyl columns stable to 400 ˚C
  • Robust column for high temperature analysis
  • Great for high molecular weight compounds
  • Eliminate carry-over with high temperature bake outs
  • Longer lifetime with rugged high temperature, polyimide coated, fused silica tubing
  • Temperature Limits: -60 to 400 °C (Isothermal/TPGC)
  • Equivalent to USP Phase G42

 

High temperature stable intermediate polarity GC column used to effectively resolve compounds that have similar boiling points, but different functionalities. High temperature limits also allow you to bake off contaminants and extend column lifetime.

Applications
  • Amines
  • Pesticides
  • Aroclors
  • Semivolatiles
  • Drugs of Abuse
  • Steroids
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.25 -60 to 400
0.32 0.25 -60 to 400

ZB-MultiResidue 2

(Application Specific Phase)GC columns

  • Proprietary phase specially designed for the separation of all types of pesticides, herbicides, and insecticides.
  • When used in parallel with the Zebron MR-1 and MR-2 column, provides baseline resolution and confirmation of all 20 chlorinated pesticides regulated under EPA Method 8081 in <10 min.
  • MS Certified phases provide low bleed performance for pesticide confirmation by MS.
  • Low activity, decreased breakdown of sensitive pesticides such as DDT.
  • Provides robust column performance for high temperature bake outs.
  • ESC Equipped.

Zebron MultiResidue columns provide baseline resolution of all EPA Method 8081A chlorinated pesticides in less than 10 minutes. In calibration curves ranging from 5-250 ppb, the columns provided results that far exceeded the EPA requirements for % breakdown of DDT and Endrin, linearity (% RSD), and resolution of critical isomers.

The unique selectivity offered by each phase allows for increased resolution of critical compounds vs. standard 5ms type phases. Retention time data is available for over 300 different pesticides on GC/MS, further simplifying new method development.

Applications
  • Aroclors/PCBs
  • Multi-pesticide Residue Methods
  • Haloacetic Acids
  • Nitrogen Containing Pesticides
  • Organochlorine Pesticides
  • Organophosphorous Pesticides
  • Herbicides
  • Insecticides
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.20 -60 to 320/340
0.32 0.25 -60 to 320/340
0.53 0.50 -60 to 320/340

ZB-BAC 1&2

(Application Specific Phases)GC columns

  • Proprietary phase specially designed for blood alcohol analysis.
  • Fast run time with baseline resolution of key components in just 2 min.
  • Enhanced resolution of ethanol and acetone peaks.
  • Achieve confirmation with two elution order chenges when running columns in paraller.
  • Allows for the use of t-butanol ir n-propanol as internal standard.
  • Enhanced accuracy for post mortem samples.

The Zebron ZB-BAC-1 and -BAC2 columns efficiently separate methanol, acetaldehyde, ethanol, isopropanol and acetone. It also resolves t-butanol from other volatile solvents, enabling the use of this compound as the internal standard. This avoids the problems associated with using propanol, the traditional standard.

Applications
  • Blood Alcohol Analysis
  • Glycerols
  • Abused Inhalant Anesthetics
  • Industrial Solvents
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.32 1.20 -20 to 260/280
0.32 1.80 -20 to 260/280
0.53 2.00 -20 to 260/280
0.53 3.00 -20 to 260/280

ZB-Drug-1

(Application Specific Phase)GC columns

  • Optimized phase for the sepration drugs of abuse.
  • Provides fast analysis with greats shape.
  • Improves resolution of targed analytes from matrix interferencies.
  • Specially deactivated fo improve quantification for drug compounds.
Applications
  • Drugs of Abuse
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.18 0.18 -60 to 320/340
0.32 0.25 -60 to 320/340

ZB-XLB-HT Inferno

(Low-polarity proprietary phase)GC columns

  • Non-metal si-arylene GC column stable to 400 ˚C
  • Robust column for high temperature analysis
  • Provides unique selectivity for conformational analyses
  • Longer lifetime with high temperature, polyimide coated, fused silica tubing
  • Good tool for general screening to identify unknown samples

Zebron™ ZB-XLB-HT Inferno is a phenyl-si-arylene bonded phase that can withstand temperatures up to 400˚ C, enabling analyses of compounds with high molecular weights and boiling points. The Zebron Inferno non-metal columns are stable at high temperatures due to proprietary coating and binding technologies, providing long lifetime, low bleed and low activity. They are ideal for analyses in environmental, food and beverage, pharmaceutical, toxicology and biofuels applications.

The ZB-XLB-HT Inferno provides unique selectivity for confirmational analyses. This MS-certified column offers low activity and good peak shape for acidic and basic samples. It is also ideal for polychlorinated biphenyls (PCBs), pesticides, herbicides and many EPA methods.

Applications
  • PCBs
  • Pesticides
  • Herbicides
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.10 -60 to 400
0.25 0.25 -60 to 400
0.32 0.10 -60 to 400
0.32 0.25 -60 to 400

ZB-1XT SimDist

(Application Specific Phase)GC columns

  • Aplication phase specially designed for the simulated destilation and high temperature simulated destilation.
  • Multi-layer Glass Infusion™ ensure a uniform glass thickness of internal metal surface throughout all lenght of the column.
  • Glass Infusion™ technology provides improved efficiency, allowing sharper peaks and improved signal-to-noise ratio for later eluting low level compounds.
  • Offer greater resolution for C50 and C52 than 2 and er longer lifetime.
  • Each ZB-1XT SimDist column is individually tested to eliminate column to column variability.
Applications
  • SimDist and HT SimDist
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.53 0.09 -60 to 450
0.53 0.15 -60 to 450
0.53 2.65 -60 to 400

Thermo Fisher TriPlus GC AS syringes with fixed needles

Syringe with fixed needle
Volume [ µl ] Needle length [ mm ] Gauge Needle ID [ mm ] Tip Gastight 1 pc Six pack
5 50 23 0.11 Cone x Click to select  
10 80 23 0.11 Cone x    
10 80 26 0.11 Cone x Click to select  
10 50 25 0.125 Cone x Click to select  
10 80 22 0.175 Cone x    
10 50 23 0.11 Cone yes Click to select  
10 50 23 0.11 Cone x Click to select  
10 50 26 0.11 Cone x Click to select  

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