The partial slit septa offers both a penetration aid for thick and dull needles plus prevents evaporation resulting in concentration changes. Only the silicone rubber is cut, the PTFE is not pre cut acting as an evaporation barrier.
The partial slit septa offers both a penetration aid for thick and dull needles plus prevents evaporation resulting in concentration changes. Only the silicone rubber is cut, the PTFE is not pre cut acting as an evaporation barrier.
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