Sulfites: FDA limits uses, broadens labeling. Abstract: The Food and Drug Administration (FDA) took two major steps in 1986 toward protecting consumers who are sensitive to sulfites in food.bstract: The Food and Drug Administration (FDA) took two major steps in 1986 toward protecting consumers who are sensitive to sulfites in food.
A cake of rosin, made for use by violinists, used here for soldering. Rosin, also called colophony or Greek pitch (Pix graeca), grÃ¦ca is a solid form of resin obtained from pines and some other, plants mostly, conifers produced by heating fresh liquid resin to vaporize the volatile liquid terpene. components Rosin is often applied to the bow before playing the instrument. 2  Lighter rosin is used for violins and violas. 3  There are darker rosins for cellos and specific, distinguishing types for bassesâfor more see Bow (music) .
The violin, viola, cello, and double bass make up the family of  bowed string instruments. The bow is usually made of horse tail  hair stretched over a wood frame, and rosin (a solid resin  extracted from pine trees) is applied to the hair so that it has  sufficient friction to vibrate the strings. Like the guitar and  harpsichord, the strings on bowed instruments can also be plucked.