BS EN ISO 21563:2013 Dentistry. Hydrocolloid impression materials has been changed from BS EN ISO 1564:1999 Dental aqueous impression materials based on agar.
BS EN ISO 21563:2013 Dentistry. Hydrocolloid impression materials has been changed from BS 4269-2:1991 Dental elastic impression material - Specification for alginate impression material.
BS EN ISO 21563:2013 Dentistry. Hydrocolloid impression materials has been changed from BS EN ISO 13716:2000 .
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