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TOOLS OF THE OCEANOGRAPHER: Equipment: Water Samplers

A.  Taking Samples of the Marine Environment
1. Water Samplers • Van Dorn Bottle • Nansen Bottle • Niskin Bottle • JZ Bacterialogical Bottle • Surface Sample Bottle	2. Messengers Most of the water samplers can be sent to a particular depth and then "triggered" to take the water sample by a "messenger". This is also the case with several other types of samplers (bottom, organism).
3. Bottom Samplers • Ekman Grab • Petersen Grab • Soft Bottom Modified Petersen Grab • Wash Bucket • Bottom Corer	4. Animal and Plant Samplers • Plankton: Standard Plankton Net, Deck Plankton Collector, Folsom Plankton Splitter, Sedgewick-Rafter    Plankton Counting Chamber • Succession Plates • Transects • Quadrants • Biological Dredge • Beach Seine • Otter Trawl • Isaacs-Kidd Midwater Trawl

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Ruler used in many images for scale
	Size: Six inches (15+ centimeters)

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1. Water Samplers

Van Dorn Bottle
	Samples: Water Operates: At any depth on a cable or line with a messenger Notes: Developed by Dr. W. Van Dorn

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Nansen Bottle
	Samples: Water Operates: At any depth on a cable or line with a messenger that makes bottle rotate 180 degrees while trapping water and closing Notes: Racks on side for reversing thermometers that record temperature of water when rotated 180 degrees (thus, when bottle rotates, temperature at that depth is recorded)

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Niskin Bottle
	Samples: Water Operates: At any depth on a cable or line with a messenger Notes:

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JZ Bacterialogical Bottle
	Samples: Water Operates: At any depth on a cable or line with a messenger Notes: Water is sampled in a sterile container for bacterial examination

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Surface Sample Bottle
	Samples: Water Operates: At the surface by hand or at any depth visited by a scuba diver Notes: Any type of bottle can be used to capture surface water

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