Capillary electrophoresis apparatus

A Capillary electrophoresis system, comprising

• a. a capillary electrophoresis apparatus comprising a hose-shaped or tubular element formed of a membrane of amorphous fluoroplastic or of polytetrafluoroethylene (PTFE) and which forms at least part of the channel of the degassing conduit;
• b. a second electrode which is arranged at the outlet or in a region of the outlet of the separation capillary further comprising a needle or tip for a spray ionization;
• c. a first terminal, which is electrically conductively connected to the first electrode;
• d. a second terminal which is electrically conductively connected to the second electrode;
• e. a voltage divider which is electrically conductively connected to the first terminal and, when a voltage U1 is applied to the first terminal, provides a second voltage U2 at a tap terminal, where U2=U1/T with T>1, preferably T>5, T>10, or T>>1 or 1 kV<|U2,HV|<3 kV, preferably |U2,HV|≈1.3 kV;
• and where
• f. the tap connection is electrically conductively connected to the second electrode;
• and
• g. a voltage source for providing a high voltage U1,HV at the first electrode.

A Capillary electrophoresis system, comprising

• a. a capillary electrophoresis apparatus comprising a hose-shaped or tubular element formed of a membrane of amorphous fluoroplastic or of polytetrafluoroethylene (PTFE) and which forms at least part of the channel of the degassing conduit;
• b. a second electrode which is arranged at the outlet or in a region of the outlet of the separation capillary further comprising a needle or tip for a spray ionization;
• c. a first terminal, which is electrically conductively connected to the first electrode;
• d. a second terminal which is electrically conductively connected to the second electrode;
• e. a voltage divider which is electrically conductively connected to the first terminal and, when a voltage U1 is applied to the first terminal, provides a second voltage U2 at a tap terminal, where U2=U1/T with T>1, preferably T>5, T>10, or T>>1 or 1 kV<|U|2,HV<3 kV, preferably |U|2,HV≈1.3 kV;
• and wherein the tap connection is electrically conductively connected to the mass spectrometry apparatus, in particular to an inlet opening of the mass spectrometry apparatus;
• f. the second electrode is preferably grounded or connected to a neutral potential;
• and
• g. a voltage source for providing a high voltage U1,HV at the first electrode.