GELRITE®, for microbiology, 500 g, plastic

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GELRITE®, for microbiology, Storage temp. +15 to +25 °C, CAS No. 71010-52-1, EC No. 275-117-5 GELRITE® is a highly-purified, natural heteropolysaccharide which forms stable, agar-l ike gels when exposed to soluble salts. Compared to agar however, only about half the amount is required. Advantages over agar: consistent product quality almost 100 % batch-to-batch conformity forms remarkably clear gels reduces preparation time as gels form faster remains stable even at high temperatures and is therefore also ideal for thermophilic microorganisms; gels can withstand repeated autoclaving without any changes to gel strength indicates no toxic contaminations (e.g. through phenols, as found in agar) is chemically inert against most media additives is resistant to enzymatic degradation is non-toxic (no signs of toxicity in rats exposed to a dose of 5.000 mg/kg) is very economical to use GELRITE® has been specially developed as a gelling agent for microbiological culture media. It can however, replace agar in other applications, too.Polymerisation of GELRITE® is enhanced in the presence of (bivalent) kations. It is therefore supplemented by MgCl2 if a solid gel structure is required. Elevated salt concentrations increase gelling temperature (e.g. 500 mM Na+ to approx. 68 °C with 1 % GELRITE®). When using very high salt concentrations like e.g. seawater, gelling capacity may be significantly reduced. Chemical composition:Linear polysaccharide comprising of O-acetylate glycuronic acid, glucose and rhamnose units. PDF Technical Documentation (PDF) Show more