Abstract: A thin-walled microplate suitable for use in the Polymerase Chain Reaction (PCR) technique comprising a plurality of thin-walled tubes or wells arranged in a fixed array, each well having an upper portion with an open top and a lower, frustoconical portion having a substantially flat bottom.

Abstract: A heat sealing product suitable for seating one or more individual containers, said heat sealing product comprising: (i) a plurality of individual heat seals set out in a configuration substantially corresponding to the shape and configuration of the container(s) to be sealed, the size and shape of the individual heat seals corresponding substantially to the size and shape of the tops of the individual container(s) to be sealed; (ii) a peelable support film layer coated on one side with a low tack adhesive, the low tack adhesive serving to hold the individual heat seals in place on the support film layer in the desired configuration prior to the sealing process; (iii) alignment points in the sealing product adapted to enable the heat sealing product and therefore the individual heat seals of the heat sealing product to be aligned substantially exactly with respect to the individual containers to be sealed.

Abstract: The application discloses a heat weldable film comprising the flowing layers: (i) a first plastic polymer layer consisting of a material weldable to a plastic polymer reaction tube; (ii) an opaque second layer comprising pigments; (iii) a third layer consisting of a clear transparent material; wherein the material of the first and third layer differ. Furthermore, a reaction tube comprising a heat weldable film according to the invention is disclosed as well as a method for labelling of reaction tubes.