Originally Posted by
EuroMom
If I read the instructions correctly then the small part of air is accounted for (assuming you kept the tip in the liquid the whole time and the air is just what was in the tip of the syringe to begin with) and the results should be read from the edge of the black rubber part - not the liquid.
+1
The "air" space is the equivalent to the volume of air that is added when you snap the tip on. If you were to remove that tip, submerge and draw the reagent, then the liquid level would be at the 1.00mL mark.
Just to keep things the same (on my end at least), I always fill till the bottom (as I hold the syringe point down) of the plunger is at the 1.00 mark. Then, when I read the reagent level, I hold it point up, and read the number at the top of the black ring. That number corresponds to the numbers on the chart. You should not have to do any math unless you are using the low end test.
HTH.
Jim
“Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.”
-Jim
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