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BS EN 228 premium unleaded gasoline quality testing and regulatory specifications.

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BS EN 228 Gasoline Test	BS EN 228 Test Method
Appearance, Colour	Visual
Water & Suspended matter	Visual
Density	IP 160, ASTM D4052, ISO 3675, EN IOS 12185
Distillation Characteristics	IP 123, ISO 3405
I.B.P. 10, 20, 50, 90 % (Initial Boiling Point)
F.B.P. Evaporation @ 70º, 100º, 150º (Final Boiling Point)
Final Boiling Point: Recovery and Residue %
Copper Corrosion Test	IP 154, ASTM D130, ISO 2160
Sulphur Content	IP 336, ISO 14596, ISO8754, IP 373
Existent Gum, (solvent washed)	IP 131, EN26246, ISO 6246
Oxidation Stability, min	IP 40, ASTM D525, ISO 7536
Lead Content	ASTM D3237,D333 , EN237
Benzene Content, % (vol/vol)	ASTM D2267, BS EN238, EN 12177
Research Octane Number	ASTM D2699, 86/BS 2637 :1991, EN25164
Motor Octane Number	ASTM D2700, 86, BS 2638:1991, EN25163
Vapour Pressure Psi/kPa DVPE/ASVP	ASTM D5191, ASTM D323, PR EN 13016
Hydro carbon types (F.I.A.)	IP156, ASTM D1319
Oxygenates
Methanol, Ethanol, IPA, TBA, Ethers C5+	ASTM D4815, EN 13132
Other organic oxygenates
Oxygen Content	Calculated from ASTM D4815
* Vapour Lock Index	Calc EN228 (Excluding Analysis)