• Grab

Grab


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Since 1930 the Petersen grab has been used in fresh water for collecting macroscopic fauna in sand, gravel, marl, clay or clay combinations.

If used in salt water, it must be painted for protection. Since it has been widely used over 6 decades, it is ideal for comparing samples with data collected previously by a Petersen grab. Vent holes permit water to flow through while the grab is being lowered, minimizing diagonal movement as well as reducing the frontal shock wave generated by descent. Jaws close clamshell fashion.

We include a safety-pin to prevent the scoops from closing to help prevent injury. The bayonet-style trip mechanism is designed to release only when the sampler is on the bottom and the cable is slack. A deliberately heavy device for biting deep into hard bottoms. Can hold up to 8 removable weights. Operation requires winch and crane due to the working weight. Ship wt: 115 lbs.
 

Features

  • Classic fresh water sampler in hard bottoms
  • Zinc plated to prevent corrosion
  • Hot rolled steel and cast iron construction
  • Large volume, large sampling area
  • Tapered scoop edges
  • Safety pin lock
  • Clamshell pivot

 

Specifications

Materials Zinc-plated heavy steel
Weight34 kg (75 lbs.),With extra weights: 42 kg (93 lb.)
Volume 9890 mL
Sample area 305 x 305 mm (12 x 12”)
Includes Shipping crate, 4 weights Extra weights available separately, pack of 2, 9 lbs each.

 

Cat. No.Description
1750-G30Peterson Grab:Includes crate, 75lbs, Zinc plated steel

 

Catalog NumberEkman, Standard
196-B12 Kit
Ekman, Tall
196-F62 Kit
Ekman, Large
197-C12 Kit
Ponar®, Petite
1728-G30
Ponar®, Standard
1725-F10
Box Size
(footprint)
15 x 15 x 15 cm
(6 x 6 x 6”)
15 x 15 x 23 cm
(6 x 6 x 9”)
23 x 23 x 23 cm
(9 x 9 x 9”)
15 x 15 cm
(6 x 6”)
23 x 23 cm
(9 x 9”)
Bite depth152 mm (6”)229 mm (9”)229 mm (9”)70 mm (2.75”)89 mm (3.5”)
Screen meshnonenonenone500 μm500 μm
Dry Weight3 kg (7 lbs)5 kg (11 lbs)7 kg (15 lbs)11 kg (24 lbs)23 kg (50 lbs)
Weight with sample16 kg (35 lbs)21 kg (46 lbs)38 kg (83 lbs)14 kg (30 lbs)34 kg (75 lbs)
Extra weights3 kg (7 lbs)3 kg (7 lbs)none4 kg (8 lbs)4 kg (8 lbs)
Ship weight7 kg (15 lbs)8 kg (18 lbs)15 kg (33 lbs)11 kg (24 lbs)23 kg (50 lbs)
Volume of Scoops3.5 liter
(214 in3)
5.3 liter
(323 in3)
11.9 liter
(726 in3)
2.4 liter
(145 in3)
8.2 liter
(500 in3)
Sample area232 cm2
(36 in2)
232 cm2
(36 in2)
522 cm2
(81 in2)
232 cm2
(36 in2)
522 cm2
(81 in2)
Length and
width overall
24 x 22 cm
(9.5 x 8.5")
24 x 22 cm
(9.5 x 8.5")
35.5 x 33 cm
(14 x 13")
41 x 29 cm
(16 x 11.5")
55 x 25 cm
(21.5 x 10")
Accessories
needed
62-C15 poly line
66-A50 reel
62-C15 poly line
66-A50 reel
62-C15 poly line
66-A50 reel
61-B14 cable
66-C10 winch or
62-C15 poly line
61-B14 cable
66-C10 winch
66-C52 mount
 

 

Specifications

Catalog
Number
Shipek® Grab
860-A10
Petersen
1750-G30
Van Veen
1775-A10
Box Corer
191-A12
Box Size
(footprint)
20 x 20 cm
(7.8 x 7.8")
30 x 30 cm
(12 x 12")
36 x 28 cm
(14 x 11")
15 x 15 x 23 cm
(6 x 6 x 9")
Bite depth102 mm (4")140 mm (5.5")114 mm (4.5")229 mm (9")
Screen meshnonenone500 mm (23")500 mm (23")
Dry Weight61 kg (134 lbs)34 kg (75 lbs)21 kg (46 lbs)14 kg (31 lbs)
Weight with sample69 kg
(152 lbs)
61 kg
(135 lbs)
68-90 kg
(150-200 lbs)
50 kg
(110 lbs)
Extra weightsnone8 kg (18 lbs)none49 kg (108 lbs)
Ship weight91 kg (220 lbs)50 kg (160 lbs)41 kg (90 lbs)42 kg (93 lbs)
Volume of Scoops3 liter (183 in3)9.9 liter (604 in3)24 liter (1465 in3)5.3 liter (323 in3)
Sample area400 cm2 (62 in2)928 cm2 (144 in2)993 cm2 (154 in2)232 cm2 (36 in2)
Length and
width overall
56 x 109 cm
(22 x 43")
65.4 x 33 cm
(25.75 x 13")
56 x 38 cm
(22 x 15")
35.5 x 24 cm
(14 x 9.5")
Accessories
needed
61-B14 cable
81-A10 crane
61-B14 cable
81-A10 crane
61-B14 cable
85-E10 winch
61-B14 cable
81-A10 crane