ISO 20783-2:2003 specifies three test methods to assess the stability of emulsions within the category HFB, as defined in ISO 6743-4.
Method A describes a method for the determination of stability during storage at ambient temperature [(20 ± 2) °C] and is applicable to HFB and HFB.LT fluids.
Method B describes a method for the determination of stability during storage at medium temperature [(70 ± 2) °C] and is again applicable to HFB and HFB.LT fluids.
Method C describes a method for the determination of stability during storage at low temperature [(-10 ± 2) °C] and is applicable only to HFB.LT fluids.
BS EN ISO 20783-2:2004 history
2004BS EN ISO 20783-2:2004 Petroleum and related products - Determination of emulsion stability of fire-resistant fluids - Fluids in category HFB
2004BS EN ISO 20783-2:2003 Petroleum and related products. Determination of emulsion stability of fire-resistant fluids - Fluids in category HFB