A sealing mat for sealing the open mouths of an array of test tubes. The mat
includes
a flexible carrier sheet having an array of mutually spaced pegs projecting downwardly
therefrom and a plurality of plugs. The plugs are externally configured and dimensioned
to be inserted in and to seal the open mouths of the test tubes. Each of the plugs
has an upwardly facing recess internally configured and dimensioned to receive
and coact in frictional engagement with a respective one of the pegs to thereby
releasably secure the plugs to the carrier sheet. The carrier sheet is separable
from the thus inserted plugs by flexure to extract the pegs from the recesses.
