From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Laboratory report comparing the distillation properties and specific gravity of two petrol samples, 'Mex' and 'BP1'.
| Identifier | ExFiles\Box 30\5\ Scan009 | |
| Date | 11th February 1921 | |
| X.1356 EP.{G. Eric Platford - Chief Quality Engineer} from H1. c. to Wd.{Mr Wood/Mr Whitehead} c. to Mr. Alvey. c. to Mr. Warwick. H19/EB11.2.21. Laboratory. X.976. Re. Two Tins of Petrol submitted today X.985 one marked Mex, and one marked BP1, with X.1356 covering note from Mr. Warwick. Mex. Specific Gravity .780 Boils at 84°C. First distilled over at 91°C. 6% distilled over at 100°C 11% " " " 105°C 15% " " " 110°C 22% " " " 115°C 28.5% " " " 120°C 36% " " " 125°C 43% " " " 130°C BP1 Specific Gravity .727 Faint bubbles at 49°C Boils at 72°C. First distillate over at 78°C 8.5% distilled over at 85°C 15% " " " 90°C 24% " " " 95°C 32% " " " 100°C 40.5% " " " 105°C 49% " " " 110°C 60% " " " 115°C 65% " " " 120°C 72% " " " 125°C 78% " " " 130°C 83% " " " 135°C 86% " " " 140°C 90% " " " 145°C 92% " " " 150°C 94% " " " 155°C H1 | ||