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Note the yellow tabs at both ends of each tube. These are for breaking the ends of the tubes to open them.
IMPORTANT!
Break the ends of only one tube at a time.
Press the tab hard to break off the end of the tube to be used. (The broken glass is held inside the
cartridge.)
Press the tab at the other end to break open the other end of the tube.
IMPORTANT!
Once a tube's ends are broken off, the material inside is exposed. Therefore, use the tube for
sampling as soon as possible.
Before performing a benzene measurement, check that the tab labeled "B" is pulled all the way out.
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