LaMotte CARBON MONOXIDE IN AIR TEST KIT - Manual (Page 3)

PROCEDURE
1.
Pour *Carbon Monoxide Absorbing Solution (7799) into a clean
test tube (0822) to the 10 mL line.
2. Insert the test tube into the Carbon Monoxide Comparator (7783)
with the Axial Reader (2071). Match the reagent color to a color
standard.
3. Use the chart to convert the index number to concentration. Record
the reagent blank as ppm Carbon Monoxide.
4. Pour the *Carbon Monoxide Absorbing Solution from the test tube
into the impinging tube to the 10 mL line.
5. Connect the impinging apparatus to the intake of the air sampling
pump.
NOTE:
Make sure the long tube is immersed in the absorbing
solution.
6. Adjust the flowmeter to collect air at a rate of 1.0 Lpm. Collect air for
30 minutes or for a sampling period that allows a measurable amount
of carbon monoxide to be absorbed.
NOTE:
A measurable amount of carbon monoxide is indicated by an
increase in the yellow color of the absorbing solution.
7. At the end of the sampling period, pour the contents of the
impinging tube into a clean test tube.
8. Insert the test tube into the Carbon Monoxide in Air Comparator
(7783) with the Axial Reader (2071). Match the reaction color to a
color standard.
9. Use the chart on the back page to convert the index number to
concentration. Record the test result as ppm Carbon Monoxide.
10. Subtract the reagent blank result from the test result to determine
the carbon monoxide concentration.