Magnaflux, MG-450A Fluorescent Magnetic Particles Magnaflux| Magnaflux, MG-450A Fluorescent Magnetic Particles Print Magnaflux| Magnaflux, MG-450A Fluorescent Magnetic Particles Ultra-high sensitivity borax-free dry fluorescent magnetic particles powder (to be mixed with water with an additive). If used with water, a conditioning agent such as the WA-2B or the WA-4 is required. MG-450A: Magnaglo MG-410 ultra-high sensitivity borax-free dry powder, 2lb (907g) jar. Magnaflux SPECIAL ORDER – 4 to 8 week lead time. Request for information