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This introductory bacteria set contains three live cultures selected to give students a good overview of bacteria shapes of rods, spheres, and spirals. You get one culture tube of each bacteria: Bacillus subtilis (rod-shaped, Gram-positive), Micrococcus luteus (sphere-shaped, Gram-positive) and Rhodospirillum rubrum (spiral-shaped, Gram-negative). These bacteria species grow well on nutrient agar and can be viewed using 400+ magnification.
Each culture comes in a test tube on agar media. These slant cultures are made with 5ml of agar that is rotated diagonally to provide the maximum surface area for the bacteria culture growth. The culture can be transferred with an inoculating needle. Each culture provides sufficient bacteria to streak 10-15 petri dishes, enough for a classroom of 30 students.
Live cultures can be difficult to sustain. The culture will come with care instructions, but plan to use it within 1-2 days of arrival for best results. This item cannot be returned.
Shipping Note: This item ships only to a street address in the contiguous 48 US states with Economy or Ground Service shipping. Specify a delivery date Wednesday through Friday, at least seven days after your order date. An additional $13 shipping charge applies to each delivery date.
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