JOHNEX MEGAPRIME is a Pentolite cast booster with a plastic protective outer shell.


JOHNEX MEGAPRIME primers are ideal for initiating bulk ANFO or emulsions and are compatible with 8 gram detonating cord or a standard No 8 detonator

Features and Benefits

  • Excellent water resistance
  • 1.65 g/cm3 assists downhole loading
  • High VOD 7400m/s
  • Can be used at elevated temperature up to 65ºc
  • User friendly
  • Totally sealed plastic outer shell
  • Designed for easier loading and user safety
  • Unique “self centering” primer basket
  • Provides easier and faster priming of boreholes