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  • Usually ships in 6-8 weeks



  • Lightweight, rugged, portable
  • Mains powered / rechargeable battery pack
  • Dual oxygen analyzers for % and PPM
  • Measurement ranges:
    • 0 - 1000 PPM Oxygen
    • 0 - 25% Oxygen
    • 0 - 96% Oxygen (BOX300)
  • Long life zirconia sensor with electrochemical options
  • Integral flow meter


The Ntron Yellow Box is a compact, intelligent, transportable oxygen analyzer providing an affordable and versatile solution for portable high purity oxygen measurement applications. Housed in a rugged high impact case and with microprocessor based electronics, makes the Ntron Yellow Box the instrument for demanding applications where a portable, accurate, fast and reliable high purity analysis is required.