PHOS-CHEK 259-Fx is an ultra highly visibility powder concentrate that mixes readily with water by agitation or PHOS-CHEK eductor-mixing systems. 259-Fx provides superior visibility in the air and on the ground when applied, but slowly fades during exposure to sunlight.
PHOS-CHEK 259-Fx is an all phosphate, gum thickened, low-viscosity retardant that provides highly effective and accurate aerial drops from all air tankers. The elastic nature of PHOS-CHEK 259-Fx solution improves aerial delivery performance by reducing drift, dispersion, and evaporation and facilitates increased fuel coverage, wrap around and penetration through canopy and ladder fuels to ground vegetation. PHOS-CHEK 259-Fx exhibits extremely low corrosion to most metals including magnesium.