As the materials of both the cap and the tube are the same, they have the same coefficient of expansion. This means that the materials will change shape at the same rate with changing temperature, for example when thawing or freezing. This in turn means that the possibility of leakage is minimised.
The range of coloured caps combined with the range of coloured cap inserts gives a vast array of colour possibilities. By using contrasting colours for cap and insert you can colour code your samples with a wealth of different colour combinations.
Manufacturer Alpha Laboratories Ltd
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