Free Flow Water Sampler

Free-flushing oceanographic water sampler

The Free Flow Water Sampler is an innovative design which avoids the limitations of the PWS/Niskin bottles caused by their reduced inlet and outlet diameters. The outstanding feature of the Free Flow Water Sampler is the really free-flushing construction of the sampler where no cone or ball-valve influences the water exchange inside the sampling tube.

The Free Flow Water Sampler features all plastic (PVC and POM) design, consisting of a tube with two lids connected by a latex rubber tubing. The lids are kept open during descent, caring for a perfect flushing of the sampling tube. Like the PWS, the Free Flow Water Sampler on the one hand can be used on Multi Water Sampler/ Rosette/ Carousel arrays and on the other hand it can be used as single or series instrument connected to a hydrographic wire. When used directly connected to a hydrographic wire, a messenger (not incl.), dropped down the wire from the surface, releases the end stoppers for closure. For the use of several Free Flow Water Samplers in a row a second messenger below the first sampler is used to actuate a series of samplers along the wire.

When operated as a single instrument without bottom weight, we recommend to use a Centered Mounting Rack (436 380) which cares for a vertical position of the sampler. Retrieve the water sample via the discharge cock/tube at the lower end of the sampler.

Category:
  Free Flow Water Sampler 1 l

Free Flow Water Sampler 5 l

Free Flow Water Sampler 10 l

Length 515 mm (C) 700 mm (C) 1150 mm (C)
Width 165 mm (A) 190 mm (A) 190 mm (A)
Height 140 mm (B) 210 mm (B) 210 mm (B)
Diameter 90 mm (D) 140 mm (D) 140 mm (D)
Sample volume 1 L 5 L 10 L
Weight on air 3 kg (empty) 6 kg (empty) 8.5 kg (empty)
operational temperature -2 to +60 °C -2 to +60 °C -2 to +60 °C
product ID  436 340 436 344 436 346

Datasheet Free Flow 1 l ( 436 340 )

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Datasheet Free Flow 5 l ( 436 344 )

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Datasheet Free Flow 10 l ( 436 346 )

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Manual 436 300-345

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