Are the petri dishes made of glass?

No, they are a thin, plastic petri dish. So they can still be seen through for observations. ~Heather Steve Spangler Science | Customer Service Representative

Is the agar nutrient liquid or dehydrated?

It was dehydrated but for the experiment that we did we added water and then we boiled it all together and then poured it.

Thanks for your question! The kit includes: 6 large, 10 cm (3.5″) diameter Petri dishes, 6 cotton swabs, 5 grams of Nutrient Agar, 600 mL plastic beaker, and a comprehensive activity guide written with an option for Science Fair. If I can provide anything else, please don't hesitate to reach out, -Heather Heather Wankum | Customer Service Representative SteveSpanglerScience.com | SpanglerScienceClub.com 4400 S. Federal Blvd., Englewood, CO 80110 Office: 800-223-9080

what is the recommended age group for this kit?

We used it for my 13-year-old daughter's science experiment. They worked well for her project. Little supervision was needed for her age. I think 8 years old and up but younger children could use it with adult help.

Brand	Steve Spangler Science
Manufacturer	Steve Spangler Science
Country of Origin	USA
Model number	WAGR-600
Number of Memory Sticks	1
Item Weight	472 g
Product Dimensions	2.54 x 2.54 x 2.54 cm; 472 g
Item model number	WAGR-600
Item Height	1 Inches
Item Width	1 Inches
Included Components	6 large, 10 cm (3.5″) diameter Petri Dishes, 6 cotton swabs, 5 g (0.17 oz) of Nutrient Agar, 600 mL Plastic Beaker, Activity Guide
Are batteries included?	No

Steve Spangler's Growing Bacteria Science Experiment Kit

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