High-quality media additives and gelling agents are the key for good growth and selection of microorganisms.
According to your needs you can choose between an economic type of agar agar like Agar Agar SERVA Kobe I (cat. no. 11395) or a highly purified type like Agar Agar SERVA High Gel-Strength (cat. no. 11396). If you need clear gels and virtually no lot to lot variations, use Gelrite® (cat. no. 22168) as alternative for agar agar.