Products
Vacuum Pumps
Peristaltic Pumps
Vacuum Gauges and Controllers
Vacuum Pump Oils
Vacuum Pump OilsHigh Vacuum Grease (100g)Gold Oil 1LGold Oil 1 Gal.Gold Oil 5 Gal. Premium Vacuum Oil (1 Liter)Premium Vacuum Oil (5 Liter)Premium Vacuum Oil (10 liter)Premium Vacuum Oil (20 liter) Premium Vacuum Oil (200 liter) Labovac 10 Rotary Vane Pump Oil 1L Labovac 10 Mineral Oil (5 Liter)Labovac 10 Mineral Oil (10 liter)Labovac 10 Mineral Oil (20 Liter)Labovac 10 Mineral Oil (200 Liter)Labovac 11 Synthetic Oil (1 Liter)Labovac 11 Synthetic Oil (10 Liter)Labovac 11 Synthetic Oil (20 Liter)Labovac 12 S Rotary Vane Pump Oil 1L Labovac 12 S Rotary Vane Pump Oil 10L Labovac 12S Mineral Oil (20 liter)Labovac 13 PFPE Oil (1 liter)Labovac 13 PFPE Oil (5 Liter)Labovac 13 PFPE Oil (10 liter)Labovac 14 PAO Oil (1 liter)Labovac 14 PAO Oil (2 liter)Labovac 14 PAO Oil (5 liter)Labovac 14 PAO Oil (10 Liter)
Applications
Mass Spectrometry
Botanicals Processing
HVAC Pumps
Leak Detection
Rotary Evaporator
Vacuum Concentrator
Vacuum Manifold
Freeze Dryer
Vacuum Oven
Vacuum Filtration
Vacuum Distillation
Aspiration (Cell Culture)
Glove Box
Gel Dryer
Vacuum Measurement & Control
Pick & Place
Vacuum Workhholding
DEGASSING / DESSICATOR
Gas Analysis
Service
Maintenance Kits
FAQ
About Us
News
Careers
History
Our Values
Downloads
Global Presence
Back to the product list

Peristaltic Pump LP500-H

Precision Fluid Handling Peristaltic Pumps

  • Digitally controlled speed accuracy up to 0.2% for precise dosing and filling
  • Longer lifetime stepper motor
  • Easy to read digital display
  • No tube adjustments required, innovative tube holders and occlusion design
  • External control via RS485, 0-5V, or 0-20mA for integration with DeltaV and other controllers
  • Includes pre-installed and tested 5502K-01 High-Flow pump head
  • Tool-free pump head change for easy maintenance or changing to a Low-Flow head
  • Engineered to deliver reliable performance with silicone tubing of 1.6 mm (1/16") wall thickness at designated bore sizes.
  • Max. Flow 1955 mL/min

The Welch LP500 Series peristaltic pumps are purpose-built for laboratory applications, featuring an intuitive keypad interface for easy speed adjustment, reversible flow direction, soft start/stop, and full-speed operation.

Fluid remains fully contained within the tubing, eliminating contamination risk and making the pump ideal for sterile or corrosive fluids. Its robust design handles thick or particulate-laden liquids with ease, while precise control ensures accurate dosing and metering. With few moving parts and no seals, the LP500 delivers exceptional reliability and reduces maintenance costs.

 

LP500 hotspots

Max. Flow

1955 mL/min

Voltage

100-240 VAC, 50/60 Hz

Motor Speed Resolution

0.1 rpm (<100 rpm), 1 rpm (≥100 rpm)

Reversible Motor

Yes

Max Continuous Pressure

0.3 bar

Dimensions

12.44” x 7.09” x 7.76”  (316 × 180 × 197 mm)

Weight

9.69 lbs (4.4 kg)

Motor speed adjustment range

0.1-600 rpm

Ambient temperature

0-40°C  (32-104°F)

Operating modes

  • Internal control
  • External control 
  • Timing
  • Foot switch
  • Dual foot switch

Compatible Tubing (Silicone) 

Flow (mL/min) @ 0.3 bar rel.

Tubing ID

Tubing Wall-Thickness

100 rpm

300 rpm

600 rpm

6.4mm
(1/4")

1.6mm
(1/16")

310

876

1569

8.0mm
(5/16")

1.6mm
(1/16")

494

1188

1955

 

  • Medical Devices: IV infusion, dialysis, and blood handling
  • Laboratories: Sample transfer, reagent dosing, and filtration
  • Industrial Processes: Chemical metering, wastewater treatment, and slurry handling
  • Food & Beverage: Flavor dosing, syrup transfer, and hygienic fluid movement
  • Bacterial/Cell Culture: The LP500 ensures precise delivery of media and efficient waste liquid discharge, making it indispensable in biopharmaceuticals, vaccine research and development, genetic engineering, and other fields.
  • Cardiac Perfusion in Animal Research: Simulate blood circulation with the LP500, for cardiovascular disease research, drug screening, and related studies.
  • Chemical Synthesis Reactions: Achieve precise liquid addition and waste liquid discharge, essential for pharmaceutical, chemical, and materials science applications.
  • Density Gradient Tube Filling: Separate different cell types or cell organelles, ribosomes or DNA from crude cellular extracts.
  • General Media dispensing

 

DESCRIPTION

MODEL

PART NO.

LP500 Drive with Pump Head – High Flow Configuration
Wired 100-240 VAC 50/60Hz

LP500H

5502-01

ETL500 Pump Head – High Flow Configuration

 

5502K-01

Platinum Cured Silicone Tubing 6.4mm ID x 1.6mm wall thickness; Length 15m

 

5500KT-06

Platinum Cured Silicone Tubing 8.0mm ID x 1.6mm wall thickness; Length 15m  

 

5500KT-08

 

REACH OUT TO US