Page 37 - Trainer Aid v3 _Neat
P. 37

Foam works by:
              •  Smothering
              •  Suppressing
              •  Separating
              •  Cooling



              Properties of Foam:
              •  Stability
              •  Fluidity
              •  Contamination Resistance
              •  Sealing and Resealing
              •  Knockdown and Extinction
              •  Burn-back Resistance



              Induction Rates:
              Class A              0.1% - 1% (opti-
              mum 0.3%)
              Class B              3% - 6%





                                              FOAM
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