Or you can make yours. You need 0.1 ml of benzyl alcohol to reconstitute 10ml of BAC water.
0.1 ml BA + 9.9 ml sterile water (%0.9 NaCl solution) = 10 ml BAC water
Some pharmacies will do it for you if you give the recipe to them, depending on your location.
Try to buy the least amount of BA since you won’t use it that much.
Good luck!