For 6 percent foam concentrates, what is the concentration range for hand line nozzles?

For 6 percent foam concentrates, the appropriate concentration range for hand line nozzles is critical to ensure effective fire suppression. The range of 5.5 to 8.0 percent allows for some variability in application methods and conditions while maintaining the effectiveness of the foam.

Using this range, the lower end (5.5 percent) ensures that even at slightly diluted concentrations, the foam retains sufficient properties to encapsulate vapors and create a blanket over the fuel source, enhancing safety and efficacy in fire control. The upper end (8.0 percent), while exceeding the nominal concentration, provides flexibility for operational adjustments, ensuring that the foam can still perform well, even in challenging situations. This range supports the goal of achieving an effective balance between adequate coverage and optimal performance of the foam suppressants.