nitrates by victor diaz

How you measure nitrate:

The first step that you need to do is take out the test tube
and put the water in it. And then you take out the two
droppers and add ten drops into it. Next you
put the lid on the testube and shake for thirty seconds and then
you add ten drops from a second bottle. Now you gently shake for one minute.
After waiting five minutes you compare it with the color card.




How to use color card:


You compare the color of the water
whi the color card and then you see the number that the color of the water
has