The Lighthouse LS-20 Liquid Sampler has an integrated syringe sampler and optical particle counting system. It’ s easy-to-use Windows™ based software interface is designed to meet the international regulatory EP and JP, as well as USP 788, requirements.


     Following a quality standard of reliability and dependability, Lighthouse Worldwide Solutions developed the LS-20 Liquid Sampler using the latest in laser optical particle counter technology.


     The LS-20 uses a high accuracy syringe pump flow control system and a high sample volume sensor. With sample volumes adjustable from 1 to 1000 milli Liters (10 mL syringe), it is a perfect tool for multiple batch sampling applications.


     The graphical user interface makes the LS-20 easy to configure and operate. Data is automatically recorded from up to eight particle size channels ranging from 1.0 to 50.0 microns and is easily available in graph and tabular form in real time. All reports can be preconfigured and printed at the touch of a button.



  • 1.0 μm to 50 μm Size Range
  • Integrated “Light Obscuration” Particle Counter
  • Software Designed for 21 CFR part 11
  • International Regulatory EP & JP Reports
  • USP 788 Reports
  • Sample Volumes from 1 to 1000 milli Liters
  • Preconfi gured USP 788 Recipes
  • Precise Syringe Pump Flow Control
  • Stainless Steel Enclosure
  • Built-in Magnetic Stirrer
  • Automated Sample Handling Maximizes
  • Repeatability
  • Compact Footprint


  • 2 Year Limited Warranty
  • Industry’s Easiest and Fastest Out-of-Box Set Up and Integration
  • Excellent ROI
  • Proven Data Integrity
  • Industry’s Lowest Cost of Ownership

LS-20 Main Screen View


 Size Range:  1.0 - 50.0 μm
 Channel Sizes:  1.0, 2.0, 3.0, 5.0, 10.0, 15.0, 25.0, 50.0μm
 Flow Rate:  20 mL per minute
 Light Source:  Laser Diode
 Calibration:  NIST Traceable
 Syringe Sizes:  10mL, 25mL
 Maximum Sample:  1 liter
 Communication Modes:  RS-232
 Wetted Components:  Tefl on (PFA), Quartz, Kalrez, Kel F, Polypropylene
 Stirrer:  Magnetic, Adjustable Speed
 Connectors:  RJ45
 Supporting Software:  LS-20 Software
 Enclosure:  Stainless Steel
 Power:  100-240VAC, 24 VDC to LS20
 Dimensions:  12.875”(l) x 8.75”(w) x 14.75”(h) [ 32.7 x 22.2 x 37.5cm]
 Weight:  20.5 lbs (9.3kg)

Environmental Conditions

 Operating:  50°F to 104°F (10°C to 40°C) / 20% to 95% non-condensing
 Storage:  14°F to 122°F (-10°C to 50°C) / Up to 98% non-condensing



Operating Manual on CD; LS-20 Software; Power Supply; Flow Cell Cleaning Solution and Brush;
Cable; RJ-45 to DB9 Adapter; Sample Tubing; Nut and Ferrule Kit; 500mL Beaker; Magnetic Stir Bar.


Printed Operating Manual; 10mL Syringe; 5-piece Beaker Set (50, 100, 250, 600, 1000mL Beakers);
Carrying Case with Wheels; Certifi cate of Origin.