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|Tips In Using A Dissolved Oxygen Test Kit Tips In Using A Dissolved Oxygen Test Kit January 2 New York Giants Hats , 2014 | Author: Cornelia White | Posted in Education It is normal for people to use the dissolved oxygen test kit. This is especially true if the person wants to identify what the state of an aquatic ecosystem is. The result of this testing will surely help a lot in assessing productivity and pollution within areas like streams, rivers, and lakes. For the testing, here are the steps to follow.
First of all, the person should fill the BOD bottle with sample H2O. One can just dip this bottle to a stream or lake and wait for it to fill up. One should make sure that there are zero air bubbles inside the said bottle too since this will alter the results. If there are some bubbles, just tip the bottle from one side to the other to let them escape.
Get the manganese sulfate and add this using the calibrated pipette. One should insert this pipette underneath the surface of the H2O that one considers testing. Squeeze it slowly as well while securing that there are zero bubbles introduced into the said sample. Otherwise New York Giants T-Shirts , the results will be altered.
Take note of the alkali-iodide-azide reagent. The individual will have to prepare this since this will be added to the sample. To be able to make use of this reagent, one should use the same technique that one has used when one is adding manganese sulfate into the reagent. It should be easier this time around.
Carefully stopper the bottle too. Make sure that no air bubbles are being introduced inside. To ensure this, turn the said bottle upside over. Do this several times to mix the contents. Of course, check that there are no bubbles in there every once in a while. If there are bubbles, then just discard the sample then start over.
Sulfuric acid will have to be added to this sample too. The person will have to utilize the calibrated pipette as well when it comes to the addition of the sulfuric acid into this sample. This time around, instead of dipping this pipette below the surface New York Giants Hoodie , one just needs to tip the pipette about the surface. Stopper the bottle again and turn it over, mixing the content.
There should be an Erlenmeyer flask prepared beforehand too. The person will then have to place 201ml of the sample solution into the Erlenmeyer flask. Make sure to get the right amount for this to get better results. For the person to get the right amount for the sample solution, utilize a graduated cylinder. After that, add sodium thiosulfate with the pipette to change this into a pale straw color.
This time, one should then add starch solution into the sample. The starch solution should be in the amount of two milliliter. After adding the said solution, this sample should then turn to blue. Continue adding more sodium thiosulfate into the said solution until it becomes a clear color.
One should then record the total amount of the added sodium thiosulfate that one has added into the solution. This is the best way to calculate the O content of this sample. When using the dissolved oxygen test kit Customized Giants Jersey , every sodium thiosulfate one has added means that the sample contains one milligram per liter of dissolved oxygen.
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