Sievers GC nitrogen detector

The Sievers NCD-255 is a GC nitrogen specific detector  that produces a linear and equimolar response to nitrogen compounds. This is accomplished by using a stainless steel burner to achieve high temperature combustion of nitrogen containing compounds to form nitric oxide (NO). A photomultiplier tube detects the light produced by the subsequent chemiluminescent reaction of NO with ozone. Because of the specificity of the reaction, complex sample matrices can be analyzed with little or no interference.

  • Nitrogen specific detection for GC or SFC with no quenching from hydrocarbons
  • Picogram detection limits
  • Linear equimolar response over 4 orders of magnitude
  • Compact burner design and easy to mount onto any gas chromatograph
  • Adapters available for simultaneous NCD and FID operation
  • Choice of pumps - oil sealed and oil free
  • Easy to operate and maintain
  • Nitrosamine analysis option 

Dual plasma system introduction

Improvements in dual plasma system

  • Nitrosamine mode option
  • Improved sensitivity and selectivity over previous single plasma burner
  • Improved stability over previous single plasma burner
  • Faster start-up and equilibration times
  • Electronic flow sensors for gas flow control with digital display
  • Controlled heated base for enhanced baseline stability
  • Drop-in burner mount for ease of installation and maintenance
  • Longer ceramic tube life
  • Narrow footprint
  • Elimination of internal sulphur traps and decoking valve
  • Easy to operate and maintain

Applications and publications

Information request