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Puran Singh

Puran Singh, Indian plant chemist (Abbotabad District, Punjab 17 February 1881 – Dehradun 31 March 1931)
Determined the oil yielding qualities of many oilseeds
Analyzed, extracted and isolated essential oils from many forest tree and plants
Devised improved methods of extraction, distillation and purification of turpentine oil from various sources like pine trees
Developed a new condenser for distillation of camphor oil
Devised a chemical test for estimation of tannins using nickel hydroxide
Devised a technique for manufacturing charcoal briquettes from Indian woods
Patented a novel technique for cleaning and discolouring crystalline from raw sugar