Met-L-X Powder : trade name A dry powder extinguishing agent with a sodium chloride base used to control fires in magnesium, sodium, potassium, zirconium, uranium, titanium and powdered aluminum
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}