AGAR AGAR

Agar is a phycocolloid, water soluble polysaccharide, extracted from a group of red-purple marine algae (Class
Rhodophyceae) including Gelidium and Gracilaria. Agar is normally used in final concentration of 1-2% for solidification
of culture media. Agar are routinely used as a solidifying agent because of several facts like, good transparency to allow
identification of colony type, consistent gelling (32?C-40?C) and melting (approximately 85?C) temperatures, free from
toxic substances that inhibits bacterial growth etc.

Used as a solidifying agent in bacteriological routine laboratory work like preparation of microbiological culture media,
plant tissue culture media, and for pharmaceutical preparations etc.