# Chemistry

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Here's is what I did:

Collect water samples from Farm Lane bridge (500 mL minimum)þ
Filter water samples using small mesh filter
Note: Weigh the dried filter before filtration!
Dry the filter in drying oven (~24 hours)þ
Weigh the filter after drying.

Day Initial Weight Final Weight
4-Apr 0.122 0.12
5-Apr 0.122 0.12
6-Apr 0.12 0.12
11-Apr 0.122 0.121
12-Apr 0.12 0.123
13-Apr 0.12 0.123
18-Apr 0.122 0.123
20-Apr 0.122 0.122
25-Apr 0.122 0.121

Do I measure turbidity using a before and after measurment of my water samples?

• Chemistry -

Normally you measure the turbidity before sampling.

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