Foil-based heat seal suitable for polypropylene and polystyrene plates and can be easily pierced with a manual or auto pipette tip. Good solvent resistance (including DMSO). Seals can be applied on top of each other allowing multiple access/resealing of samples. A blue coloured stripe identifies the non-sealing surface for ease of application. Pierceable and non-peelable. Seal integrity range -20°C to 120°C
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