Accordingly the invention consists in {HEAD ~ a dispenser} comprising a bag or sachet having {TAIL ~ a wall}, through which liquid may pass, material within said bag or sachet being able to dissolve or be subjected to a leaching action in a selected liquid so as to release a selected material into said selected liquid 
Accordingly the invention consists in { HEAD ~ a dispenser } comprising a bag or sachet having { TAIL ~ a wall } , through which liquid may pass , material within said bag or sachet being able to dissolve or be subjected to a leaching action in a selected liquid so as to release a selected material into said selected liquid
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH