MonnexTM is listed against UL299C. MonnexTM was the first powder of its kind to attain such a high approval rating. Today, MonnexTM remains the most trusted high performance firefighting powder. When MonnexTM is tested in an EN3 rated extinguisher body, it is possible to extinguish a 144B pan fire (4.54m2) with just 1.5kg of powder. When the same test is repeated on a 233B pan (7.23m2), just 2.3kg of powder is used. This demonstrates the power of Monnex™, making the first strike – the only strike.