Rose oil the aromatics unaltered by heat. Because CO is gas at normal atmospheric pressure, it leaves no trace of itself in the final product. The equipment for CO extraction is expensive, which is reflected in the price of the essential oils obtained from the process. It takes a large amount of rose petals to distill a small amount of essential oil. Depending on extraction method and plant species, the typical yield can be approximately 1:3,000. To mitigate the cost, some dishonest dealers will dilute rose oil with geranium ("Pelargonium graveolens") or palmarosa ("Cymbopogon martinii") essential oils, both of which are rich
Attar of Nishapur Attar of Nishapur Abū Ḥamīd bin Abū Bakr Ibrāhīm (c. 1145 – c. 1221; ), better known by his pen-names Farīd ud-Dīn () and ʿAṭṭār (, Attar means apothecary), was a twelfth-century Persian poet, theoretician of Sufism, and hagiographer from Nishapur who had an immense and lasting influence on Persian poetry and Sufism. Manṭiq-uṭ-Ṭayr ["The Conference of the Birds"] and "Ilāhī-Nāma" are among his most famous works. Information about Attar's life is rare and scarce. He is mentioned by only two of his contemporaries, `Awfi and Tusi. However, all sources confirm that he was from Nishapur, a major city of