We may earn a commission from links on this page. Well, as it turns out, not really. Phos-Chek, the pink fire retardant that firefighters are dropping on LA County, is actually reasonably safe for ...

Phos-Chek is made from ammonium phosphate ... The front steps and mailbox of an house in Mandeville Canyon after fire retardant was dropped on the neighborhood. AFP via Getty Images Use ...

Los Angeles firefighters are using Phos-Chek, a bright pink fire retardant, to combat wildfires threatening lives and property. Developed by Perimeter Solutions, Phos-Chek helps slow the spread of ...

Phos-Chek is an aerial fire suppressant, generally a mixture of water, ammonium phosphate—essentially fertiliser—and iron oxide, which is added to make the pink flame retardant visible.

The Phos-Chek retardant is widely used by authorities ... The heat from the fire activates the retardant's components, preventing plant cellulose from fueling the flames, releasing water vapor ...

The vibrant red fire retardant is known as Phos-Chek and has been used by firefighters battling wildland blazes for over 50 years, according to its manufacturer, Perimeter Solutions. Between 2009 ...

Common fire retardants, such PHOS-CHEK, which is used in Los Angeles, include fertilizers, such as ammonium polyphosphate, diammonium phosphate and diammonium sulfate, as well as monoammonium ...

The substance, vivid against the grey smoke and charred landscape, is fire retardant -- much of it a product called Phos-Chek that has been used by the US Forest Service since the 1960s.

Aircraft that douse flames with water and bright red Phos-Chek fire retardant are a common sight in California. Aerial firefighting requires municipal, county, state and federal agencies to ...