AR-AFFF Firefighting Foam Concentrate OLAS 33 – Vina Foam

OLAS 33 is a film-forming synthetic foam concentrate, formulated from fluorinated surfactants, hydrocarbon-based surfactants, high molecular weight polymers, and various solvents.

OLAS 33 requires relatively low energy to generate foam. The foam solution is capable of forming a film layer over most hydrocarbon fuel surfaces as well as water-soluble polar solvents such as alcohol-based fuels and acetone.

These film layers separate the fuel from oxygen and prevent fuel evaporation. The water contained in the foam solution also provides a cooling effect.

Suitable for use with seawater, freshwater, and hard water at a mixing ratio of 3%.

• Recommended at 3% for Class B fires (hydrocarbon fuels)
• Also used at 3% for polar solvent fires
• Excellent wetting properties make OLAS 33 suitable for Class A fires

OLAS 33 can be used with:

• Low expansion foam equipment (foam nozzles)
• Spray devices (sprinklers, standard nozzles)

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TECHNICAL SPECIFICATIONS

1	APPLICATION RATE		Can be easily proportioned using standard equipment such as balanced pressure pumps, proportioners, and inductor nozzles.
2	PHYSICAL PROPERTIES OF FOAM CONCENTRATE	Appearance, color	Light yellow gel liquid
		Density at 20°C	1.030 ± 0.02 g/ml
		Freezing point	≤ -3°C
		pH at 25°C	7.5 – 8.5
		Sediment	< 0.1%
		Viscosity (Brookfield)	375 s⁻¹: 100–140 mPa·s / 60 s⁻¹: 1800 ± 650 mPa·s
		Surface tension	17 ± 1.0 mN/m
		Expansion ratio (3%)	≥ 6.5
		25% drainage time	≥ 7 minutes
		50% drainage time	≥ 12 minutes
4	STANDARDS AND CERTIFICATIONS	Tested in compliance with: TCVN 7278-3:2003, EN 1568-3:2008, EN 1568-4:2008
5	COMPATIBILITY WITH STORAGE MATERIALS	Compatible with carbon steel, stainless steel (304, 316), and brass. Recommended materials include polyethylene and aluminum. Avoid galvanized pipes and fittings due to corrosion risk.
6	SHELF LIFE	Approximately 10–15 years if stored according to manufacturer guidelines. Annual quality testing is recommended.
7	STORAGE AND HANDLING	Storage temperature: 0°C to +50°C. If frozen, thawing restores full performance. Stir well after thawing.
8	ENVIRONMENTAL AND TOXICITY PROPERTIES	Aquatic toxicity	No harmful effects on aquatic environments, including sensitive species.
		Biodegradability	Readily biodegradable with BOD₂₈/COD > 0.65