Velocity of detonation (VOD) is cited as the performance specification for explosives. If you are not measuring VOD then you cannot be sure that your explosives are performing properly.

 If you want to profile the VOD continuously along a sample of explosives or along an explosives column in a single blasthole, the world's most affordable and easiest to use recorder is the HandiTrap II™ VOD Recorder.

EXPLOSIVES CONSUMERS
You are paying for explosives to provide you with the energy your blasts need under your specific blasting conditions. The
HandiTrap II™ VOD Recorder is used by mines and quarries to perform spot checks of explosives performance during blasts to compare the actual VOD results to the VOD specification published by the explosives manufacturer.

EXPLOSIVES MANUFACTURERS
Your customers depend on you for their explosives. At explosives plants, the HandiTrap II™ VOD Recorder is used as part of the quality control process to test the VOD performance of samples of explosives including cartridges, boosters, detonating cord, bulk explosives of all types, and military explosives. At the customer’s blast site, technicians providing in-hole delivery of explosives use the HandiTrap II™ VOD Recorder to proactively document the VOD performance of the explosives being sold to the customer.