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The water sampling specialists

Exclusively designed and manufactured in Germany, WaterSam samplers feature high-quality materials and components to provide long-term reliability, requiring minimal maintenance. Each sampler undergoes an extensive quality control check before leaving their manufacturing facilities.

The success of WaterSam has been built on decades of experience with water sampling technology. Their technicians’ extensive knowledge and hands-on field experience enables them to continuously refine the WaterSam product designs, incorporating the latest technology and creating innovative new solutions such as the industry’s first multi-axis distributor system.





Wall Mount

Measuring Probes


WaterSam controllers feature user-friendly operation and reliability. Both controller types not only enable to the activation of programs at the same time, they can be also run simultaneously. Custom software modifications can easily made upon request.


Standard Controller

The standard WaterSam controller is suitable for a wide variety of applications. Its 4-key user interface is easy to operate, and yet it offers the possibility of running up to 9 sampling programs at the same time. In addition, the standard controller has multiple menu levels, enabling the user to set a code that restricts access to certain menus. The 4 analog inputs and 10 digital inputs enable time-, volume-, flow-, and event-proportional sampling.
A built-in RS-232 serial port permits communication with external devices. With an optional modem, even remote control is a possibility.



The WaterSam MS3 controller offers user-friendly operation in addition to a range of communications possibilities and the ability to retrieve data from internal and external sources.
Despite the wide-ranging possibilities available, sampler operation is very user-friendly thanks to the 24 keys and large graphic display. Color-coded direct function keys serve to start, pause and stop selected programs. A grab sample can be taken simply by pressing the blue key.
Intelligent sensors can be connected directly to the controller, without the need for a transmitter. If desired, a variety of data can be accessed and retrieved via a USB port.

Sampling Systems

Depending on conditions and requirements, samplers are available with diverse sampling systems:

VAC Vacuum Pump System

This high-performance standard system for WaterSam samplers operates with the vacuum/pressure principle and offers many benefits:

  • No recalibrating sample volumes after cleaning
  • Highest repeatability
  • No components to replace often (i.e. no peristaltic pump hose)
  • Borosilicate glass metering vessel
Sample MediaClean to very dirty water/wastewater
Optional: pure/ultrapure water
Sampling ModesTime-, volume-, event-proportional
Sample VolumesFixed, adjustable from:
12 – 200 ml (WS Porti, WS 312, WS 316 SE)
15 – 350 ml (WS 98, WS 316, WS 316 SR)
Optional: larger volumes
Wetted PartsBorosilicate glass (dishwasher-safe; resistant to acid, alkali, and temperature shock), silicone, PVC, stainless steel
Optional: custom materials upon request
Available forWS Porti, WS 98, WS 312, WS 316, WS 316 SE, WS 316 SR
VAR-B Vacuum Pump System
VAR-E Vacuum Pump System
VAR-C Vacuum Pump System
Peristaltic Pump
FMWW Water Switch
PRF Water Switch
VAC with Isolation Valve

Sample Distribution

Direct Bottle Filling with Numerous Possibilities
WaterSam's XY Distributor system has been in use successfully for nearly 20 years. Its wide array of possibilities, reliable operation and minimal follow-up costs have made it the distributor of choice among customers. The two-axis system makes full use of the entire sample storage chamber by using coordinates to travel and locate bottle positions.