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Guidance on how to prepare the stains needed for gram staining - to distinguish between Gram-positive and Gram-negative bacteria.
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An updated method of staining gram-positive and gram-negative bacteria using basic equipment. 
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Using common dyes and indicators safely in practical activities. Many such compounds , or their solvents, are hazardous but are used in such small amounts and in a very controlled way so as to limit e.. more
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An invaluable practical guide on how to safely undertake a range of visually and intellectually appealing chemical reactions. Includes alternatives to some traditional activities such as the thermit r.. more
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Risk assessment guidance for dyes, indicators and stains.
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Make-it guide on how to make a staining rack and drip tray for gram staining microbes.
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Observing gram-positive and gram-negative bacteria using a microscope with oil immersion lens.
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As well as some basic information on using agar in microbiology, this document includes recipes for over 20 different, commonly-used microbiological agars.
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Risk assessment guidance for potassium manganate(VII).
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Complete index for the Student Safety Sheets
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