The ion transfer tube is a metal, cylindrical tube that assists in desolvating ions produced by the API spray insert while transferring them into the vacuum system. The design of the ion transfer tube is different for each mass spectrometer (MS).

For information about maintaining the ion transfer tube, see Maintain the external components of the API source interface. For information about ordering a new ion transfer tube, see API source interface replaceable parts.

Table Descriptions of the ion transfer tubes

MS model

Ion transfer tube description

TSQ Altis Plus

TSQ Altis

These mass spectrometers use a high-capacity transfer tube (HCTT) which is a short tube with a stadium-shaped orifice. Its internal bore has a non-circular cross section, and its nose cone has the letter "L" etched on its front face. This etched letter lets you quickly identify the high-capacity transfer tube. The quarter-turn pin behind the nose cone secures the tube to the API source interface.

Stadium-shaped orifice "L" etched letterQuarter-turn pin

TSQ Quantiva

The ion transfer tube is a short tube with a stadium-shaped orifice. Its internal bore has a non-circular cross section. The quarter-turn pin behind the nose cone secures the tube to the API source interface.

Quarter-turn pinStadium-shaped orifice

TSQ Quantis Plus

TSQ Quantis

TSQ Endura

The ion transfer tube is a short tube with a cylindrical bore. Its internal bore has a circular cross section. The nose cone has the letter "V" etched into its front face. The threading behind the nose cone secures the tube to the API source interface.

"V" etched letterThreads

TSQ Fortis Plus

TSQ Fortis

The ion transfer tube is a long tube with a cylindrical bore. Its internal bore has a circular cross section. The threading behind the nose cone secures the tube to the API source interface.

ThreadsCylindrical bore