VENTILATION SMOKE TUBE KITS	ÿ
FEATURES	ÿ
ÿÿÿÿÿ Controlled smoke generation for determining flow and velocity of slow-moving air currents	ÿ
ÿÿÿÿÿ Excellent for tracing air currents in shafts, mines, tunnels, as well as heating, ventilating	ÿ
ÿÿÿÿ and air-conditioning systems	ÿ
ÿÿÿÿÿ Kits come with everything needed for smoke generation	ÿ
DESCRIPTION	ÿ
MSA Ventilation Smoke Tube Kits are for use where controlled generation of a visible smoke is	ÿ
desired in order to determine the velocity, direction and flow patterns of slow-moving air currents
in shafts, mines and tunnels. They can also be used in commercial buildings and industrial processingÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
plants to determine the velocity and flow patterns of heating, ventilating and air-conditioning systems.
Ventilation Smoke Tube Kits consist of a hand-held rubber aspirator bulb, two rubber plugs and
smoke-producing tubes of either plastic or glass design.
Plastic Smoke Tubes
Every plastic tube contains two hermetically sealed glass ampoules that each contain a different chemical.
To use, the user slips the sheath of the tube over the exhaust fitting of the aspirator bulb. The user then
crushes the glass ampoules in the tube. The vapors of the two chemicals contained in the ampoules mix and
create smoke when the user pushes air through the plastic tube by squeezing the rubber aspirator bulb.
Two domed metal screens are mounted inside each plastic tube to trap the glass fragments from the
broken ampoules.
Glass Smoke Tubes
Glass tubes contain a chemically impregnated media that generates smoke when it is exposed to air being
pushed through the tube by the aspirator bulb. To operate, the user simply snaps off and discards both of
the scored ends of the tube. Next, the user inserts one end of the tube into the exhaust fitting of the
aspirator bulb. To generate smoke, the user squeezes the aspirator bulb.
With either style, a single tube is intended to supply smoke for one day of normal use. Once smoke has been
emitted from the tube, the user should watch the direction and speed of the smoke movement. To determine
velocity, the travel time of the smoke should be taken over a premeasured distance. When testing is complete,
simply remove the bulb from the plastic or glass tube and plug both ends of the tube with rubber stoppers
supplied with the kit.

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