02:08duration 2 minutes 8 seconds
Balancing a balance -OC
From jtlipari@stkate.edu
04:32duration 4 minutes 32 seconds
Dissecting microscope - OC
05:40duration 5 minutes 40 seconds
Making chemical solutions - OC
Microscope use - OC
05:46duration 5 minutes 46 seconds
Pipetting - OC
04:54duration 4 minutes 54 seconds
Using a ph meter - OC