1.  During calibration, what is the recommended flow rate for both the iTX and the iBrid?

2.  Marginal calibration occurs if the (gas) sensor's full span value or span reserve is between 40% to 60% of the applied (calibration) gas value concentration.

3.  Both the iTX and the iBrid gas instruments can accept zinc-ion battery types.

4.  All over-range conditions will clear automatically when the gas concentration has decreased to a level within the display range of the gas instrument in non-latching mode.

5.  Prior to entering the normal GAS READING mode during start-up, the gas instrument will display all installed sensor types.

6.  The specific gravity of nitrogen dioxide is:

7.  Although smoke may irritate your lungs when you inhale it, it is not normally considered to be an asphyxiant.

8.  Blackdamp is a mixture of carbon monoxide and air which results from a mine fire.

9.  The smoke tube is used to show the direction and velocity of slow-moving air (below __________ feet per minute).

10.  The pitot tube has a J-tube water gauge or some other differential pressure gauge for determining the velocity pressure inside the duct or tubing.