top of page
  • Heat resistant high borosilicate 21mm glass test tubes
  • Well annealed, chemically stable and resistant  to thermal stress

  • Clear and transparent walls ensure optimal visibility

  • Cork stopper provides secure sealing mechanism

  • Natural corks and synthetic corks are optional 

  • Flat-bottommed test tubes predominate, round bottom also available

  • MOQ 300pcs available while MOQ for custom size is 1,000pcs


Meet ASTM E982 specification, Type II requirements

21mm Flat Bottom Glass Test Tube with Cork

  •  Usually is 0.9-1.2mm according to different sizes while 1.5mm thickened wall test tubes are available to customize with MOQ 10,000pcs.

bottom of page