Determination of the zeta potential of the surface of PTFE

The surface zeta potential cell is an accessory for the Zetasizer Nano. In this document, the cell is used to study the surface potential of PTFE giving accurate and reproducible results in excellent agreement with literature values. The zeta potential spans the range from +20mV at pH2 down to -75mV at pH9. Two different tracers were employed: 300nm carboxylated latex from Invitrogen and coffee compliment milk substitute.

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