Students can gather water samples from any desired depth with this efficient, yet inexpensive mechanism. The single line trigger mechanism uses one line to both raise and lower the sampler as well as trigger the device to seal the collection chamber. The efficient flowthrough design provides 1.5 liter volume of water from which temperature and dissolved oxygen content can be determined. Invaluable to monitor water quality and determine how oxygen content varies with depth. Size: 6-1/4"L x 3-1/2"D.
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