Turbidity+Test


 * Period 6 Group D Kelly Brett Julia

Hypothesis: We believe that there will be a JTU level of 30 for this test. We think this because we don't think that the river water is clean, clear, and unhealthy.

 **** Prediction: If the river is not clean and clear and is unhealthy, then the JTU level should come out as 30.

Procedure: ** ** 1) fill one of the turbidity tubes up with 50 milliliters of pond water.   2) look to see if how cleary you can see the black dot on the bottom if the tube. 

3)fill the second tube with 50 milliliters of distilled water 4) compare the tubes and see if the pond water is the same amount of cloudiness as the distilled water.

5) if they do have the same amount of cloudiness then the Jackson Turbidity Units (JTU) is zero   6) if the pond water is cloudier you must add .5 militers of turbidity reagent. 7) stir heavely for 30 seconds 8) if now the waters have the same amount of cloudy-ness then the JTU is 5 9) If still not the same repeat the prosses until they are ands see chart for JTU level.

Data-After adding .5 of the turbidity agent the waters were the same amount of cloudy ness. \

Conclusion- Our hypothisis was proven wrong. We said the JTU level would be thiry which would be pretty high. The level we got wasnt zero however which means the water isnt totally clean and clear. we got a level 5 JTU **


 * Period 6 Group F: Matt, Laura, and Juliette**

When we take water from the river we believe that we will be able to see the black dot clearly, but we will need to add reagent to the distilled water to make it the same as the sample. If the turbidity level of the stream water is 0 JT; then we believe that the river is healthy. We believe that the JTU will be above 5.
 * Hypothesis:**

If we take water from the river and compare it to the distilled water, and the distilled water is clearer than the sample, then we believe that the turbidity level of the river water is higher than the distilled; thus making the river healthy.
 * Prediction:**

1. Take 2 turbidity columns. 2. Fill 1 of them with 50ml. of distilled water. Fill the other with 50 ml. of stream sample. 3. Look in the column with stream water and see if you can see the black dot at the bottom. If you cannot see the black dot, empty both of the columns to 25 ml. each. 4. After you have done that look at the black dot in both and compare them. If the two dots look of the same clarity then the experiment is complete. If not, add 0.5 ml of the reagent to the distilled water. 5. Keep adding the reagent until the dots both look the same. 6. For each 0.5 ml of reagent, it is 5 JTU (if you are using 50 ml of water) to the total of the stream sample. If you are using 25 ml of water it is 10 JTU for each JTU.
 * Procedure:**

When we filled the two columns with 50 ml of water the distilled water's dot was clearer than the stream water. Once we added 0.5 ml of water to the the dots had the same clarity so the stream water has a measurement of 5 JTU.
 * Data**

Our hypothesis was disproved because we said that the JTU will be over 5. Our uncertainty was 0.5 JTU. When we did the experiment, the JTU was 5. Our prediction was correct because we said that the stream would have a higher turbidity than the distilled water. We believe that based on the results of our experiment, that the Passaic River is slightly unhealthy because of the high JTU of the water.
 * Conclusion**

Period 3 Group B: Turbidity
Adriel, Johnny, Josh L, Julia O


 * Hypothesis:** We believe that the water will be unhealthy and the turbidity level will be above 10 JTU.


 * Prediction:** If the river is unhealthy and has a high turbidity level, then the river is unhealthy.


 * Materials**:
 * Test tubes
 * Sample Water
 * Distilled Water
 * Pen/Pencil
 * Computer
 * JTU regiment

1 Get two turbidity columns. 2 Put 50ml of test water in one column 3 Put 50ml of distilled water 4 If you see the black dot on the bottom equally. 5 If the test water is you must add .5 turbidity regiment and the JTU is 5 6 Proceed if you can not see the dot equally in both columns
 * Procedure:**


 * Data:** We got 5 JTU which means the river is healthy.


 * Conclusion:** Our hypothesis was disproved by are results. We got 5 JTU which means that the turbidity in the water is low. This makes the river healthy. We encountered no problems throughout the testing

** Hypothesis: There will be a high turbidity level because I believe the river is unhealthy.
 * Group B per. 6: Turbidity nicole,natalie,jacob

Prediction: If the river is unhealthy and has a high turbididy level and we do an acurate turbidity test comparing distilled water and river water 3ft downstream of central ave. than we should expect a high turbidity level.

Procedure: 1. Take 2 turbidity collums. 2. Put 50 ml of river water 3ft downstream of central ave into the first collumn. 3. Observe ; if you cant see the black dot at the bottom of the collumn ,take out 25 ml of water. 4. In second collumn put 50 ml of distilled water. NOTE:if you took 25ml of water out of river water tube ,do the same with the second collum. 5.If you can see both dots equally the turbidity is 0 Jackson Turbidity Units.(JTU) 6. Take dropper into reagent and take .5 ml of reagent and drop it into the distilled water collumn to make it equally cloudy with river water tube. 7. Mix distilled water collumn making sure the reagent is spread out equally through the whole collumn. 8.If black dots are equal after .5 ml of reagent is into the distilled water collumn than the turbidity level is 5 JTU.

Data: Acordng to our hypothsis the water should have been a much higher JTU than just 5 but i could see the two dots equally when i put the .5 ml of the reagent. Acording to the chart that shows the water is 5 JTU.

Conclusion: My hypothesis was suprisingly disproven. The JTU was 5 JTU which is considered low. High JTU would be 100 depending on if you used 50 ml of distilled and river water or only 25 ml. If you used 25 ml the JTU would be 200. By observing the results, I now think the passaic river is somewhat unhealthy judging by the low JTU.If i had more time i would have done this test multiple times to prove my findings.

Uncertaintys: some uncertaintys could be + or - o.5 reagent. I could have falsely measured the reagent in the dropper throwing off the results and the false reading of the JTU chart.

Period 3 Group D: Joe, Jamie, Casey, Kaitlyn
Turbidity test Purpose: To find whether or not the river contains turbidity.

Hypothesis: We think that the water will contain turbidity and is unhealthy.

Prediction: If the water is unhealthy and contains turbidity and we perform a turbidity test to check for turbidity then we should find that there is turbidity in the water and that it is unhealthy.

Materials: Standard turbidity reagent, 2 turbidity columns, pipette, 0.5 ml with cap, plastic stirring rod.

Procedure:
 * 1) Fill one turbidity column with 50 ml of sample water
 * 2) Look down the column and if the black dot is not clearly visible go onto other steps
 * 3) Fill the second turbidity column with 50 ml of distilled water.
 * 4) Place the tubes side by side and note the difference in clarity
 * 5) If the black dot is not equally visible go onto other steps
 * 6) Shake the standard turbidity reagent and add 0.5 ml to distilled water
 * 7) Continue to add 0.5 ml until the black dots are equally visible
 * 8) For every o.5 ml you add the turbidity is 5 JTUs
 * 9) Rinse everything well after test

Conclusion: I discovered that the turbidity level in our sample water was 5 JTUs. It was taken near the construction site in a black pipe. This shows the water in this area is relatively healthy and can support life. If the turbidity levels were high then light would be unable to pass through the water to the bottom of the Passaic River and plant life would die. In turn this would cause the ecosystem to fall apart. The Passaic River has a relatively healthy turbidity level.

==== __Turbidity: Period 3,__ Group F Luke Chris Stacy Isabella  **Hypothesis:** knowing that tap water is always 0 Jackson turbidity units (jtu), which is healthy the river water will be 5 to 10 jtu. **Prediction:** If the river will be around 5 jtu and we take a sample from the river and compare it to tap water using the test we gathered, then the tap water should look just as foggy as the river water after we put .5 milliliters of standard turbidity reagent in it. **Procedure:** 1. you take a sample of the river and a constant like tap water and put it in the testing tube. 2. Look down both tubes and see if you can see the black dot at the bottom 3. If the black dot is just as visible in the river sample as in the tap water then the jtu level is 0. 4. If the river water is foggier than the tap than you take the standard turbidity reagent and drop one drop into the tap 5. If the tap water is just as foggy as the river water then the jtu level is 5  6. If not than you repeat the same procedure until the two samples look the same. **Conclusion:** The hypothesis, tap water is always 0 Jackson turbidity units (jtu), which is healthy the river water will be 5 to 10 jtu, was supported. The closer the jtu is to 0 the less turbidity the water has. Because the river water had only 5 jtu it is safe to say that the river is relatively healthy. 0 jtu is the best that the water can be so if the river water is only 5 jtu than it is safe to say that it is healthier than most waters. ====