AGE 11-13
Lesson 10- Things needed for science experiment
Kim K c
7 years ago
I couldn't find 71% alcohol. What did everyone else use?
Rachael W c
7 years ago
70% isopropyl rubbing alcohol--Walgreens, Walmart, etc.
Amanda J c
3 years ago
What are people using for the "saline solution" in Hydrosphere 4: Marine Ecosystems? It calls for 3.5% saline. Is this homemade solution as used before, a contact lense Solution or nasal wash? Any suggestions?
Angela D c e
3 years ago
3.5% saline is equivalent to ocean water. Here is a good website with directions (you will use the 35 ppm recipe)
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