CO2 is calculated and
measured in parts per million
-
ppm
.
Country air contains about 300 ppm. City air usually contains about 400 ppm. Most researchers put the ideal level for maximum growth rate at about 1500 ppm, or five times the amount of CO2 found in fresh air.
Inexpensive CO2 Tester
The simple inexpensive test kit pictured here is available
from a number of garden supply distributors across the country.
Each glass tube is good for just one test, and costs about $7.50.
This is a small price to pay for the benefits that come from proper
CO2 enhancement, no matter what size the garden.
Using the CO2 Test Kit
plastic syringe.
air.
tested.
through the glass tube. The entire
process should take about
one minute.
band in the indicator tube. |