Portable, Rugged, and Refrigerated Samplers



  • Ideal for refrigerated wastewater, industrial and environmental sampling
  • Simple to operate – no programming required
  • Rugged construction for harsh environments
  • Meets federal, state and local wastewater regulations
  • Timed and external flow pulsed composite samples
  • Adjustable and repeatable sample volume
  • Peristaltic pump prevents sample contamination

Refrigerated Wastewater Samplers Product Description

Global Water’s WS700R Refrigerated Wastewater Samplers combine all the features you need to meet a wide variety of water sampling requirements, including those for stormwater, industrial discharge, water and wastewater treatment, waste collection systems, and rivers and streams.

The WS700R Refrigerated Wastewater Sampler’s state of the art water sampler controller gives you complete control over your water sampling process. With the water sample size control, you can take individual time-weighted composite samples or full-bottle discrete grab samples in a 2 gallon sample bottle. The water sample interval control allows you to set the time between individual refrigerated composite samples or enable the external trigger mode for flow proportional sampling. A start delay timer allows you to start multiple refrigerated water samplers in the field at the same time, or to delay drawing a water sample after a triggering event so that your water sample better represents the water source. An automatic 15 second backflush cycle clears any debris from the strainer and empties the water from the hose so the next refrigerated composite sample is not contaminated.

The WS700R Refrigerated Wastewater Samplers are easy to set up in the field. The refrigerated wastewater sampler requires two 120 V outlets to power the peristaltic pump and refrigerator. The refrigerated wastewater samplers are relatively small and can be easily hidden or protected inside of a fiberglass enclosure. The refrigerated wastewater sampler’s refrigerator does not have a compressor and is coolant free.

The WS700R Refrigerated Wastewater Samplers come with a 2.5-gallon polyethylene sample bottle for collecting refrigerated composite samples, a peristaltic sampling pump, a circuit board controller, and a rechargeable gel cell battery. Also provided is a sample pickup hose and a battery charger. Everything you need is provided for a successful wastewater management or environmental monitoring program.

Overflow Protection
The refrigerated wastewater sampler’s sample bottle is equipped with a float switch that automatically turns off the peristaltic sampling pump if the water bottle becomes full.

Sample Size
The user can adjust the refrigerated wastewater sampler’s sample size to one of 15 composite sample sizes from 50ml to 2 liters plus a full bottle discrete setting and the refrigerated wastewater sampler’s sample interval to one of 15 time settings from 5 minutes to 12 hours plus an external trigger mode setting for flow proportional sampling.

Flow Proportional Sampling
An external pulse-type flow meter can control the water sample interval for true flow proportional sampling.  Global Water’s Open Channel Flow Monitor has a flow-proportional output signal for triggering the WS700R refrigerated wastewater samplers.  If you already have a flow meter but it has a 4-20mA output, please look at the related products section of the Refrigerated Water Samplers Options

Remote Water Sampling Notification
Attach the AD200 Autodialer or CVD-2000P Cellular Autodialer to your refrigerated wastewater sampler to add remote sample notification.  This accessory will save you travel time by ensuring that you always know when your refrigerated wastewater samplers have taken a sample at your monitoring sites.

Refrigerated Wastewater Samplers Specifications

Operating Temperature: 32° to +158°F (0° to +70°C)
     Enclosure: Expanded UV protected PVC
     Bottle: 2.5 gallon Polyethylene
     Pickup Hose: 15 ft reinforced PVC 1/4 inch ID polyethylene flexible tubing section with intake strainer
     Pump Tubing: Norprene 1/4 inch ID, 7/16 inch OD
Sample Pump:
     Flow Rate: 1000 ml per minute at a 4 foot head
     Type: Peristaltic
     Maximum Lift: ~20 feet
Power: Internal 12V Rechargable Battery with AC 120 VAC adapter/charger (control panel), 115VAC 60Hz 1.6A 130W (refrigerator)
     Standby: 3 months while still retaining enough power to run the pump to capacity
Start Delay: 16 time settings from 0 to 12 hours
Composite Interval: 15 time settings from 5 min. to 12 hours plus an External Trigger mode setting
Sample Size: 15 composite sample sizes from 50 ml to 2 liters plus a Full Bottle discrete setting (Approximate sizes at 4 foot head)
External Trigger Input: 250mS minimum pulse width
     Switch closure or 4-24VDC
Pulse Output: 5VDC one-second pulse
     1000ohm output impedance
Bottle Switch Input: Switch closure input
     Floating switch in bottle
Rain and Water Sensors: Optional moisture sensors or switch closure inputs
Internal Fuse: 10A Slow-Blow
Size of unit: 21x18x21 inch (53.3×45.7×53.3 cm) (HxWxD)
Weight: 37 lb (17 kg)

Refrigerated Wastewater Samplers Options

WS700R Refrigerated Wastewater Sampler (PN# CD0500)
Refrigerated samplers for composite samples of stormwater or industrial discharge flows.

WS700R-QR Refrigerated Wastewater Sampler w/Quick Release Pump (PN# CD0600)
Refrigerated samplers for composite samples of stormwater or industrial discharge flows.


WSSWK Stormwater Kit (PN# CTU000)
Includes CA0400 Rain Sensor, CA0500 Flow Sensor and RG333 Auto-drain Rain Gauge.


BC100 Smart Charger (PN# FN0000)
Maintain constant battery voltage and increase battery life.

AD200-1 Voice Alarm Autodialers (PN# FA0100)
Voice alarm autodialers includes one inputs and four phone/pager numbers.

CVD-2000P Cellular Autodialer (PN# FA0350)
Includes the AD200-4 autodialer, cellular phone, and AC adapter.


12V 5AH Rechargable Battery (PN# 00-010)
¼ inch Pickup Hose (PN# 00-546)
Pickup Strainer (PN# CA0600)
Peristaltic Pump Tubing (PN# 00-744)
Rain Sensor (PN# CA0400)
Flow Sensor (PN# CA0500)
Float Switch for bottle 01-283 (PN# CD0300)
Float Switch for bottle 02-063 (PN# CD0400)
2.5 Gallon Plastic Bottle for refrigerator #00-333 (PN# 01-283)
2.5 Gallon Plastic Bottle for refrigerator #02-062 (PN# 02-063)
Cap for bottle #02-063 (PN# 02-064)
RG333 Auto-Drain Rain Gauge


WS700 Composite/Discrete Water Sample (PN# CU0000)
Single pump stormwater or wastewater sampler.

WS750 Stormwater/Wastewater Sampler (PN# CT0000)
Dual pump stormwater or wastewater sampler.

WS755 Improved Stormwater/Wastewater Sampler (PN# CT1000)
Includes the following parts: a rugged, rainproof, lockable carrying enclosure, two 1 gallon polyethylene sample bottles, two peristaltic sampling pumps, a control panel enclosed logic timer/controller, two 15′ reinforced PVC sample pickup hoses with removable debris strainers, a 5 AH rechargeable gel cell battery, and BC100 Smart Charger.

WS700-10G 10 Gallon Composite Sampler (CC0800)

WS700-PCO Portable Cooler Composite Sampler (PN# CM0500)
Mobile sampler with attached cooling unit.


WS700-IBO Ice Bag Composite Sampler (PN# CL0500)
Portable composite sampler with internal ice bag.  One gallon sample bottle included.


RG750/RG755 4-20mA to Pulse Converter Module (PN# ELC000/ELD000)
This module is for use with flow monitors that produce a 4-20mA output.  There are two versions available, one that pulses every 15 minutes at 20mA (RG750) and one that pulses every 30 minutes at 20mA (RG755).  Please specify the unit conversion that best suits your application at the time of order.

OxiTop® BOD Measurement Instrumentation
BOD measuring instrument for self-check with 6 measuring units, universal power supply, 50/60 Hz power plug, and accessories.

Long Handled Dipper

Swing Sampler w/Pole & Bottle (PN# CXA000)

Sludge Judge, 15 FT (PN# CY0000)

GL500-7-2 Multichannel Data Logger (PN# FQ0000)
Features 7 analog channels and 2 pulse channels, USB and serial communication port, and includes software and cables.  Requires an external 12 VDC power source.

GL500-2-1 Datalogger
Specify Serial or USB version when ordering.  Features 2 analog channels and 1 pulse channel.  Includes two internal 9V batteries, Windows-based Global Water Datalogger Software, and PDA software for the CE operating system. (PN# FR0000)

WQ900 Water Pollution Testing Kit (PN# DJ0000)

FSS Flow Sampling System
A unique combination of instruments that makes monitoring, sampling, and recording stormwater or industrial discharge water flows easy.

WQS Water Quality Sampling System
A unique combination of instruments that allows for monitoring, sampling, and recording of water flows that exceed a water quality parameter such as turbidity, pH, conductivity, ect.


SIT65 Satellite Internet Telemetry
Replace the datalogger on your composite sampler with a telemetry system that pages you or alerts you via text messaging that your sampler took a sample. (PN# FM1000)


SIT70 Premium Satellite Internet Telemetry