Wednesday, 28 March 2012

Experimental Results--> sample 2; water


Second Set of results

Silver nitrate testing
Results
Area 1
 There was a mild presence of silver chloride in the water
Area 2
There was a mild presence of silver chloride in the water
 Area 3
There was a mild presence of silver chloride in the water

Salinity Test
Test 1(ppm)
Test 2(ppm)
Average (ppm)
Tap water
210

Area 1
180
179
179.5
Area 2
175
176
175.5
Area 3
172
174
173


Phosphate Testing
Test 1(ppm)
Test 2(ppm)
Average (ppm)
Area 1
25
25
25
Area 2
25
25
25
Area 3
25
10
15

Turbidity
Test 1 (NTU)
Test 2(NTU)
Average (NTU)
Area 1
2.1
2.2
2.15
 Area 2
3.8
3.7
3.75
Area 3
1
1.2
1.1

pH testing
Test 1(mV)
Test 2(mV)
Average(mV)
Area 1
6.9
7
6.95
Area 2
7.3
7.1
7.2
Area 3
7
7.1
7.05



Problems 
When testing for the turbidity i was getting extremely high readings. These results were counteracting my hypothesis that the turbidity of the water would be lower due to less movement in water. This test was done numerous time with the same samples with each result still being high. However the minor bubbles in the top of the water storage container which was placed in the turbidimeter completely threw out results. I had to re-do all my samples ensuring that i filled each container/flask to the complete top so there was no air between the lid and the container.

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