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Cole-Parmer™ Masterflex L/S Easy-Load II Pump Heads for High-Performance Precision Tubing

Masterflex L/S Easy-Load II Pump Heads for High-Performance Tubing with automatic retention holds tubing securely in place with no manual adjustment—just load the tubing and start the pump

Catalog No. 11-747-358

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Includes: single-channel mounting hardware and a 15'' (38-cm) length of silicone pump tubing.



  • Four-roller rotor improves pressure performance and mechanical stability while reducing pulsation
  • Improved occlusion bed geometry lengthens tubing life
  • Polyphenylene sulfide (PPS) housing with either stainless steel (SS) or cold-rolled steel (CRS) rotor—choose CRS for economy or SS for greater durability and chemical resistance
  • Model 77201-62 with adjustable occlusion gives you the option of loosening occlusion for longer tubing life or increasing occlusion for higher pressure
  • Each pump head for high-performance precision pump tubing accepts tubing sizes L/S™ 15, L/S™ 24, L/S™ 35, and L/S™ 36. Achieve flow rates of 1.7 to 2900 mL/min (1 to 600 rpm)


ISO 9002 registered

Warranty and Services

2 Years



L/S Easy-Load II
single-channel mounting hardware and a 15 in. (38cm) length of silicone pump tubing.
Fluid handling
1.8 lb
3.25 in.
0.034 to 2900 mL/min, depending on tubing size and drive rpm
Masterflex L/S Easy-Load II Head for High-Performance Tubing with Open-Head Sensor, PPS/SS
L/S 15, L/S 24, L/S 35, L/S 36 tubing and L/S drives with open-head sensor
PPS, stainless steel
4.75 in.
5 in.
L/S High-Performance Tubing (thick wall)
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