12. The package labels of preparations intended for use by spraying shall bear the safety phrases S23 (do not breathe gas/fumes/vapour/spray [appropriate wording to be specified by the manufacturer]) and S38 (in case of insufficient ventilation wear suitable respiratory equipment) or S23 and S51 (use only in well ventilated areas), depending on the application criteria set out in the approved classification and labelling guide together with any other safety phrases which may be assigned to the preparation under these Regulations.