The Primadet® series is available in numerous combinations of lengths and delay times for various surface and underground specific blasting operations. Primadet® are factory-assembled units with the following main components:

• Shock tube to transmit a signal to the delay cap. The shock tube is a 3mm diameter plastic laminated tube coated inside with a thin layer of HMX / Aluminium dust, which reliably transmits a low energy signal at approximately 2000m/s from one point to another. Due to the shock tube construction and inner Surly tube, the low energy signal will propagate through most sharp bends, knots and kinks that may occur in the shock tube. The outer surface of the tube remains intact during and after functioning. The distinguishable tough, orange outer jacket gives excellent abrasive, oil resistant and tensile properties.
• A precise surface and in-hole detonator containing integral delay elements, anti-static protection and other patented safety devices. This detonator will initiate all compatible cast boosters and cap sensitive explosives.