Tests for water purity are mainly aimed at detecting particular indicator organisms. ... Confirmed test includes Eosin ethylene Blue plate, which inhibits gram positive bacteria. ... Confirmed test, sample C confirmed positive for metallic green colonies on EMB plate. ... Water sample C tested positive for Coliform making it unsafe water to drink. ... Since both tap and bottled water showed no significant difference in purity, Bacterial count and mineral content, which water is really safer for Americans? ...

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• Approx Pages: 5

Once incubated to confirm the purity a gram and acid-fast stain were preformed. ... The casein test was negative because there was no clearing zone around the organism on the agar. ... The nitrate reduction test was positive. ... Table 1: Results of Biochemical Tests on Environmental Unknown Biochemical Test Results Rod/Cocci Cocci White/Colored White Casein - Starch Hydrolysis - Nitrate Reduction + Motility + Discussion The objective was to isolate and characterize and unknown environmental organism by determining the metabolic processes through the use of biochemical tests and stains. ... ...

• Word Count: 1658
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School