Retardant Contract: 2004 |
| Home > LAQA > Phos-Chek MV-F (3.7:1) | ||
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| Lot Acceptance and Quality Assurance Information | ||
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| Phos-Chek MV-F (3.7:1) | ||
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| Phos-Chek MV-F is a wet concentrate formulation that contains a mixture of monoammonium phosphate and ammonium sulfate as the fire retardant salts. The formulation is gum-thickened and yields a medium viscosity (450-750 centipoise) mixed retardant. MV-F contains corrosion inhibitors, stabilizers, and fugitive color. Mixing occurs through simple proportioning of the retardant concentrate and water. The resulting mixed retardant is pumped directly into aircraft without intermediate storage. | ||
| Product Type: | Medium-viscosity, gum-thickened, fluid concentrate; demand-mixed. | |
| Qualification: | Qualified for use from a temporary base and can be applied from a fixed-wing airtanker, helicopter bucket or ground engine. | |
| Use Level: | 1 gallon of fluid concentrate mixed with 3.7 gallons of water will produce 4.64 gallons of mixed retardant. Each gallon of mixed retardant contains the equivalent of 2.27 pounds or 0.22 gallons of fluid concentrate. | |
| Yield: | 1 ton of fluid concentrate yields 881 gallons of mixed retardant. | |
| Viscosity: | 450-750
centipoise (cP) for medium viscosity. Field measurement (Marsh funnel) 18-21 sec through the large tip for the medium viscosity. |
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| Salt Content: | 11.0
percent by weight active salt: 8.0 percent by weight AS, (NH4)2SO4, 1.5
percent by weight DAP, (NH4)2HPO4, and 1.5 percent by weight MAP, (NH4)H2PO4. Field measurement (refractometer): A reading of 12.0 indicates a proper salt content. A reading between 11.0 and 13.0 indicates an acceptable salt content. |
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| Specific Weight: | 8.90 and 10.55 pounds/gallon, respectively, for mixed retardant and fluid concentrate. | |
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E-mail: cjohnson12@fs.fed.usor szylstra@fs.fed.us |
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