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m-Endo Agar, LES Dehydrated Media 500g

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Price:
$94.76
SKU:
M13-124AB
Brand:
Weight:
2.00 LBS
Availability:
Usually Ships within 24 hours
Shipping:
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Product Description

McCarthy, Delaney and Grasso formulated Endo Agar LES (Lawrence Experimental Station) for testing water for coliform bacteria by a two-step filter procedure using Lauryl Tryptose Broth as a preliminary enrichment. They recovered higher numbers of coliforms by this method compared with the one step technique using m Endo Broth. The American Public Health Association specifies using m Endo Agar, LES in the standard total coliform membrane filtration procedure for testing drinking water and bottled water. It is also specified for use in the completed phase of the standard total coliform fermentation technique. The coliform bacteria are bacteria that produce a red colony with a metallic (golden) sheen within 24 hours incubation at 35.0¡C on an Endo-type medium. The U.S. Environmental Protection Agency specifies using m Endo Agar, LES in the total coliform methods for testing water using single-step, two-step and delayed incubation membrane filtration methods.. Amount: 500g. Final pH:Ê7.2 ± 0.2 at 25.0¡C. The powder is homogeneous, free flowing and purple.. Visually the prepared medium is rose colored, slightly opalescent with a precipitate.. Expected cultural response after 20-24 hours at 35.0¡C.. Instructions for use and preparation are provided as well as a certificate of analysis.

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