Long-term retardant and fire-suppressing gel compositions

A method of preparing a fire-fighting concentrate, the method comprising mixing a SAP concentrate and a long-term fire-retardant concentrate, wherein:

• the fire-fighting concentrate composition comprising a homogeneous mixture of a super absorbent polymer (SAP) concentrate and a long-term fire-retardant concentrate, wherein,
• the SAP concentrate is a non-aqueous liquid comprising less than about 4% free water and the long-term fire-retardant concentrate is an aqueous liquid concentrate that contains less than about 1% free water, and
• the composition comprises about 40 to 60 parts by volume or weight SAP concentrate and about 60 to 40 parts by volume or weight long-term fire-retardant concentrate, and wherein:
• the free water content of the composition is less than about 5%;
• the composition further comprises a thickener, and optionally a corrosion inhibitor, a coloring agent, a flow conditioner, or a combination thereof;
• and
• the long-term fire-retardant concentrate comprises an ammonium phosphate fire retardant and/or an ammonium sulfate fire retardant.