The Peristaltic Pump Tubing is a round tube made of purple/orange tygon (grade R-3603) and has an inner diameter of 2.54 mm. It is 3 meters long. This tubing comes standard in NIR Autosampler Shipping Kits (L1195032).
PerkinElmer provides a host of Autosampler and Sipper supplies such as tubing, needles, and ferrules that can be ordered separately as replacements or spare parts.