31. The salts in use are the tartrate ( free base conversion ratio 0.644 ) and hydrobromide ( 0.958 ). 32. The salts in use are the hydrobromide ( free base conversion ratio 0.806 ) and hydrochloride ( 0.902 ). 33. The salts in use are the bitartrate ( free base conversion ratio 0.643 ) and hydrochloride ( 0.770 ). 34. Nicocodeine is almost always used as the hydrochloride salt, which has a free base conversion ratio of . 917. 35. The salts in use are the tartrate ( free base conversion ratio 0.58 ) and hydrobromide ( 0.76 ). 36. It has been almost exclusively used as the fumarate salt, which has a free base conversion ratio of 0.70. 37. The salts in use are the hydrobromide ( free base conversion ratio 0.770 ) and the tartrate ( 0.644) 38. Belgian Blue cattle have improved feed conversion ratio ( FCR ) due to lower feed intake compared to weight gain. 39. The salts in use are the free base hexahydrate ( free base conversion ratio 0.715 ), and hydrochloride ( 0.833 ). 40. I did the second conversion in the lede based on the first ( original ) conversion ratio and short form billion.