Phos-Chek 259-Fx is an ultra highly visibility powder concentrate that mixes readily with water by recirculation, 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 in most metals including magnesium.