Envco – Environmental Equipment

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Ekman Bottom Grabs

This is the grab to choose for soft, finely divided littoral bottoms that are free from vegetation, such as sticks and leaves (or with short, erect growth only) as well as intermixtures of sand, stones and other coarse debris. It specialises in taking quantitative and qualitative samples of macroscopic bottom fauna to determine the productivity of soft bottoms, particularly those composed of finely divided muck, mud, ooze, submerged marl and fine peaty materials. Versatile and durable, it is suited for preliminary as well as more precise work.
Ekman Bottom Grab is a light weight bottom grab designed to collect samples in soft, finely divided sediments free from vegetation and intermixtures of sand, stones and other coarse debris.
Wildco Ekman Bottom Grabs

Features
• Scoops overlap to reduce sample loss
• Dependable release closing
• Stainless steel construction
• Lightweight yet stable due to wide base
• Extra weights available
• Centre pivot for low bottom disturbance

To operate, attach to a line and pass it through the trip mechanism. Set the springs over the knobs and pull the jaws apart. Lower till the grab hits the bottom and send a messenger down the line, allowing the springs to close the scoops.

A distinguishing feature is the messenger-operated scoop release mechanism. It is very reliable, has few working parts and is the best of its type in the field.

Two thin, hinged overlapping lids on top open during descent to let water pass through. They close during retrieval and are held shut by water pressure to reduce washout. The closing springs easily unhook from their loaded position for safe handling during transportation and storage.

• Safe, reliable closing mechanism
• All stainless steel construction
• Extra weights fit standard and tall Ekmans
• Extension handles replace messengers in shallow water
• Kits include 45-B10 messenger, 62-C15 line and case
• Sampler and cases also available separately
• Heavy duty springs on tall and large versions
• Wide base yields good stability despite its light weight

Ordering Information:

196-B12 (standard) is the most versatile due to its portability. Standard Methods recommends it for general sampling.

Box size: 152 x 152 x 152 mm
Volume of box: 3.5 L
Total mud weight: 16-25 lbs.

196-F62 (tall) is recommended by Standard Methods for larger samples in softer bottoms, particularly uppermost, fine, bottom materials. Its top lids open wide to minimise the frontal shock wave as it is lowered.
Box size: 152 x 152 x 229 mm
Volume of box: 5.3 L
Total mud weight: 23-35 lbs.

197-C12 (large) is substantial enough to need no extra weights. Kit includes 910-A26 plywood case.
Box size: 229 x 229 x 229 mm
Volume of box: 11.9 L
Total mud weight: 47-68 lbs.

Ekman Grab Kit
Kits include: 45-B10 messenger, 62-C15 line (100’) and case.
196-B12 Standard Ekman Kit, 6 x 6 x 6”
196-F62 Tall Ekman Kit, 6 x 6 x 9”.
197-C12 Large Ekman Kit, 9 x 9 x 9”

Ekman Grab only: (No case or accessories)*
196-B15 Standard Ekman, 6 x 6 x 6”
196-F65 Tall Ekman, 6 x 6 x 9”.
197-C15 Large Ekman, 9 x 9 x 9”

Replacement parts and Accessories:
197-B15 Scoop springs, Pack 2, (for standard/ tall Ekman)
197-B25 Scoop springs, heavy, Pack 2 (for large Ekman)
196-L25 Spring-retainer hub, (for standard, tall), Pack 2
197-L25 Spring-retainer hub, (for large), Pack 2
196-F35 Cables (for standard Ekman), Pack 2
196-F70 Cables (for tall Ekman), Pack 2
197-G25 Cables (for large Ekman), Pack 2
45-B10 Messenger, 11 oz., split

196-F75 Weights, 1.5 kg (3# ea) (for standard, tall) Pack 2
196-F30 5’ extension handle (for standard, tall)
62-C15 3/16” braided polyester line, 100’
61-B14 Cable, stainless steel, 100’
66-A50 Hand reel for line or cable

190-E25 Washbucket (for small grabs)
188-E50 Wash frame (for large Ekman)
910-G25 Plastic carry case (for standard, tall Ekman)
910-A26 Plywood case (for large Ekman)

If you cannot find the part number in the documentation please provide detail. Specific to this item, it could include part number or application detail, (ex. 20 meters of cable, or 20 litres of volume)

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