PRF 4-44/335 is a U.S. Military Pulsed Radio Frequency (PRF) explosive simulant. This simulant is part of a series of materials developed to simulate post-Vietnam era plastic bonded explosives such as Composition A-3, Composition B, PETN (pentaerythritol tetranitrate) and others.
The PRF 4-44/335 simulant is composed of a nitrocellulose, a highly flammable oxidizer, and a plasticizer. This mixture is pressed and cured, forming a powder. In its ready to use form it is a light to medium tan and beige powder with a particle size of +44 mesh to -335 mesh.
PRF 4-44/335 is used to simulate the blast and fragmentation effects of high explosives and weapons for training and testing military personnel, security forces, and civilian contractors and responders. The simulant is also used in explosive ordnance disposal training simulators, explosive ordnance disposal robots, blast mitigation and shock cell tests, detonator development and testing, and other explosive related activities.