Cole Palmer MasterFlex L/S 7557-04 w/ 7557-02 Easy-Load II Peristaltic Pump & 77200-50 head

Cole Palmer


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Web Information

Pump Head

  • Automatic retention holds tubing securely in place with no manual adjustment—just load the tubing and start the pump
  • 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
  • Each pump head for precision pump tubing accepts tubing sizes L/S® 13, L/S® 14, L/S® 16, L/S® 25, L/S® 17, and L/S® 18. Achieve flow rates of 0.06 to 2300 mL/min (1 to 600 rpm)


Product Type Pump Head
mL/rev Depends on tubing selected.
Accepted tubing L/S® 13, L/S 14, L/S 16, L/S 25, L/S 17, L/S 18
Rotor material Cold-rolled steel
Housing material Polyphenylene sulfide
Rollers Four; cold-rolled steel
Occlusion Fixed
Automatic tubing retention Yes
Qty/ea 1
Brand Masterflex
Dimensions 5"W x 4-3/4"H x 2-3/4"D
(12.7 x 12.1 x 7.0 cm)

Pump Motor


Product Type Motor
Power (Amps) 2.2
Motor (hp) 1/10
Motor (watts) 75
rpm 6 to 600
IP rating (Motor) IP33
Dimensions (Motor) 10.75"L x 3.75"W x 4.5"H
(27.7 x 9.7 x 11.7 cm)
Qty/ea 1
No. of Pump heads accepted 2
Brand Masterflex



Product Type Controller
Power (Amps) 2.2
rpm 6 to 600
IP rating (Controller) IP33
Dimensions (Controller) 10.4"L x 8.4"W x 5.5"H
(26.3 x 21.1 x 14 cm)
Speed control ±0.25%
Qty/ea 1
Brand Masterflex


Seller refurbished. Excellent functional and cosmetic condition.

Video of this unit in operation:


(1) Cole Palmer MasterFlex L/S 7557-04 w/ 7557-02 Easy-Load II Pump & 77200-50 head


      30 Day warranty. We pledge to offer the best service and warranty to all of our customers!  We are extending a 30 Day warranty on this item. This is our way of saying thank you for allowing us to serve you.


      This is a genuine product from this manufacturer.