WS700 Composite Discrete Water Sampler

Global Water’s WS700 Composite Discrete Water Sampler

Our new WS700 single-bottle composite/discrete water 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.

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The WS700 composite/discrete water 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 (7.5 L) sample bottle.

The water sample interval control allows you set the time between individual composite samples or enable the external trigger mode for flow proportional sampling. A start delay timer allows you to start multiple composite/discrete 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 back-flush cycle clears any debris from the strainer and empties the water from the hose so the next composite sample is not contaminated.

The WS700 composite/discrete water samplers are easy to set up in the field, and their rugged rainproof enclosure can be padlocked and/or chained to prevent tampering, plus they can be easily hidden or camouflaged to prevent vandalism. The sampler’s also lightweight enough that even with a full sample bottle it can be suspended in a manhole for wastewater or stormwater sampling.

Comes with: a 2-gallon polyethylene sample bottle for collecting composite samples, a peristaltic sampling pump, a circuit board controller, and a rechargeable gel cell battery. Also provided is a sample pick-up hose and a battery charger. Everything you need is provided for a successful wastewater management or environmental monitoring program.

Low Power
The composite/discrete water sampler’s 5 AH rechargeable battery will power the sampler for several months or several sampling events.

Overflow Protection
The composite/discrete water 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 composite/discrete water sampler’s sample size to one of 15 composite sample sizes from 50ml to 2 litres plus a full bottle discrete setting and the composite/discrete water sampler’s sample interval to one of 15 time settings from 5 min. 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. The Open Channel Flow Monitor has a flow-proportional output signal for triggering the WS700 composite/discrete water samplers.


Operating Temperature: 0 to +70C
Size of unit: 22″H X 17″W X 9″D
Weight: 20lb (Shipping Weight 22lb)
Enclosure: Expanded UV protected PVC
Bottle: 2.5 gallon Polyethylene
Pickup Hose: 15′ reinforced PVC 1/4″ ID polyethylene flexible tubing section with intake strainer
Pump Tubing: Norprene 1/4″ ID, 7/16″ OD
Sample Pump Type: Peristaltic
Flow Rate: 1000 ml per minute at a 4 foot head
Maximum Lift: 20 feet

Battery: Rechargeable 5 AH Gel Cell
Battery Life: 1 hour, continuous pumping under load
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 50ml to 2 litres 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 read switch in bottle

Rain and Water Sensors: Optional moisture sensors or switch closure inputs
Internal Fuse: 10A Slow-Blow

Ordering Information:
WS700 Composite/Discrete Water Sampler
Includes the following parts: a rugged, rainproof, lockable carrying enclosure, two gallon polyethylene sample bottle for composite sample, one peristaltic sampling pump, a control panel enclosed logic timer/controller, one 15′ reinforced PVC sample pick-up hose with removable debris strainer, a 5 AH rechargeable gel cell battery, and a battery charger.



Weight 12 kg
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