flasks – clear -glass – round bottom – for nitrogen

  • Manufactured from heat resistant, durable borosilicate glass according to DIN and ISO standards. Featured with an 25? angle PTFE stopcock.
  • Thick wall, heavy base and reinforced rim prevent breakage during washing and transportation.
  • Perfectly grinded NS necks with smooth interior guarantee excellent leak-proof closure.
  • Volume graduations and inscriptions are printed with white enamel.
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