SULPHUR FLOWER DISCS - 1kg package doses: One 10 g tablet per 6-7 hl capacity . To be used exclusively for 'cellar hygiene. Usage: you introduce accesses into the barrel by means of an iron wire that will be secured to the bunghole . In 'extracting the iron take care not to bump against the walls, in order to avoid the fall of the remaining unburned part . Dry and ventilate the drums before sulfurization.