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Using Daphnia to Monitor Water Toxicity
Posted: Mon Nov 23, 2009 5:05 pm
by nataliexoxo334
I was wondering if anyone could tell me exactly how much water or how much sediment to use in step 7?
Thanks.
Re: Using Daphnia to Monitor Water Toxicity
Posted: Mon Nov 23, 2009 6:16 pm
by ScienceExpert123
what are you referring to when you said "step 7"?
Re: Using Daphnia to Monitor Water Toxicity
Posted: Mon Nov 23, 2009 8:42 pm
by nataliexoxo334
Under experimental procedure, towards the bottom, there is a #7.
Re: Using Daphnia to Monitor Water Toxicity
Posted: Wed Nov 25, 2009 6:57 pm
by MelissaB
I believe the student is referring to:
https://www.sciencebuddies.org/science- ... ?from=Home. It this is right, the idea is to use different amounts of both. I would probably only use 1-10g of sediment in half a liter or so of water...but I'm just guessing. Try that and see if it really does look like runoff from a storm; if it's too murky or not murky enough, add more sediment or water.