(4)Glass safe and sampling. - The distiller shall, if the Commissioner so directs, provide between the stills and the spirit receivers a glass safe by which the quantity and strength of the spirits which are running will at any moment be visible to the operator, or a sampling apparatus so constructed that for every sample drawn off on exactly equal quantity shall be discharged into a closed and locked receptacle. If required both a safe and a sampling apparatus shall be provided. The distiller shall also, if so required, provide branch pipes fitted with locks by means of which spirits of different strengths and qualities may be diverted into separate receivers.
