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PLANKTON NETS

Simple Plankton Nets
Closing Plankton Nets
Bongo Plankton Nets
Multi-Net (Tucker) Trawl
Student Plankton Nets
Stream Sampling Nets

WATER SAMPLERS

Horizontal Water Samplers
Vertical Water Samplers
Student Water Samplers
Secchi Disks
Limnology Field Kits

SEDIMENT CORERS

Universal Percussion Corer
Gravity Corer
Russian Peat Borer
Piston Interface Corer
Large Bore Sediment Sampler
Pore-Water Sampling
Extension Rods and Percussion
Hammer
Core Extruding Apparatus
Discrete Point Piston Corer

PLANKTON SAMPLERS

Plankton Traps
Haney Grazing Chambers
Light Traps
Limnocorrals, Microcosms, Enclosures

LABORATORY EQUIPMENT

Utermoehl (Phytoplankton) Sedimentation Chambers
Folsom Plankton Sample Splitter
Motoda Plankton Sample Splitter
Zooplankton Counting Trays

 

QUESTIONS & COMMENTS

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DELIVERY TIMES

 

Closing Plankton Nets

  • Quantitative zooplankton analysis
  • Discrete vertical towing applications

 

Nets Include:

  • plankton net:
    • heavy duty Nitex® nylon net available in most mesh sizes (see current price list for available sizes); mouth to length ratios: 1:3, 1:4, 1:5 or 1:6; nets include a brass ring choke band (except Puget Sound Net)

  • stainless steel ring and three point bridle:
    • ring diameters (cm): 15, 20, 30, 50, 75, or 100
    • stainless steel ring with cross-bar and towing eye also available
    • units include 20 m calibrated (1.0m intervals) polypropylene line and reel

  • PVC collecting bucket:
    • COD END ASSEMBLY 2-piece PVC design with detachable lower section with lateral apertures and lined x (specified) micron mesh, CNC made ” threaded coupler” with band clamp zinc ballast weight. Available in various diameters and volumes: 9 cm (500 ml), 11 cm (1000 ml), and 17 cm diameter (4000ml).
  • release mechanisms:
    • snap-shackle release:
      • stainless steel construction
      • sharp pull on towline actuates net closure at desired stratum
      • very accurate and reliable closures to 50m
      • not recommended for net diameters over 30cm
    • weight actuated release mechanism: cast bronze and stainless steel construction
      • available in light duty, heavy duty, and double release models, actuated by split messenger(s)

  • split messengers:
    • cast bronze and stainless steel construction
    • easy opening-closing design for attachment to any point on a cable
    • attaches to cables up to 7mm diameter
    • available in: 333gm, 666gm, and 1.0kg sizes

  • Options:
    • custom sizes and modifications
    • mechanical flowmeters (G.O. model R2030)
    • non-metalic rings and bridles








CLOSING PLANKTON NET "BODY ONLY" PRICE LIST (US$)

CLOSING PLANKTON NET, NITEX NYLON, TRIPLE STICHED, REINFORCED COLLARS, GROMMETS

MOUTH
DIAM. (CM)

15

20

30

30

50

50

50

60

75

75

100

100

100

LENGTH (CM)

60

80

90

120

150

200

250

240

300

375

300

400

500

MESH SIZE
(MICRONS)

NET PRICE ONLY (US$)

10

 

135

165

181

309

329

351

533

611

771

809

853

919

20

 

135

165

181

309

329

351

533

611

771

809

853

919

30

 

135

165

181

309

329

351

533

611

771

809

853

919

50

 

135

165

181

309

329

351

533

611

771

809

853

919

64

 

135

125

169

251

309

337

471

571

655

761

795

903

80

 

135

125

169

251

309

337

471

571

655

761

795

903

100

 

135

125

169

251

309

337

471

571

655

761

795

903

125

 

135

125

169

251

309

337

471

571

655

761

795

903

150

 

135

125

169

251

309

337

471

571

655

761

795

903

200

 

135

125

169

251

309

337

471

571

655

761

795

903

250

 

135

125

169

251

309

337

471

571

655

761

795

903

300

 

135

125

169

251

309

337

471

571

655

761

795

903

333

 

135

125

169

251

309

337

471

571

655

761

795

903

363

 

135

125

169

251

309

337

471

571

655

761

795

903

500

 

135

125

169

251

309

337

471

571

655

761

795

903

700

 

135

125

169

251

309

337

471

571

655

761

795

903

750

 

135

125

169

251

309

337

471

571

655

761

795

903

1000

 

135

125

169

251

309

337

471

571

655

761

795

903

RING AND BRIDLE ASSEMBLIES, ALL SS CONSTRUCTION W/ THREE POINT RING AND BRIDLE, COMPLETE

PLANKTON NET MOUTHDIAM.(CM)

15

20

30

50

60

75

100

SS RING AND THREE PT. BRIDLE PRICE

45

60

80

150

190

220

270

PLAIN SS RING PRICE

40

57

77

157

197

251

295

REDUCTION COWLINGS, TAPERED COLLAR. (A.K.A. WISCONSON COLLARS) USED TO REDUCE VOLUME TO SURFACE AREA RATIO ON PLANKTON NETS. ALLOWS LONG VERTICAL OR OBLIQUE TOWS WITHOUT NET CLOGGING. USED IN CONJUCTION WITH RELEASE MECHANISM  TO OBSTRUCT MOUTH OPENING AFTER NET IS ACTUATED TO CLOSE AT DEPTH.  CONSTRUCTED FROM HEAVY REINFORCED POLYESTER MATERIAL, REINFORCED AND GROMMETS ON BOTH ENDS TO ACCEPT SS RING AND BRIDLE AND PLAIN LOWER RING (PRICED SEPARATELY ABOVE).

UPPER RING TO LOWER RING- DIAM. (CM)

20 TO 30

30 TO 50

50 TO 75

75 TO 100

STANDARD COWLING HEIGHT. (CM)

20

50

75

100

REDUCTION COWLING PRICE

135

175

335

423

PUGET SOUND COLLARS   CYLINDRICAL COLLAR USED TO CREATE “NON-FILTERING HEAD SPACE” ABOVE PLANKTON NETS.  FLOWMETERS CAN BE MOUNTED INSIDE TO INTERNAL TABS.  DESIGNED FOR LONG VERTICAL HAULS.  USED IN CONJUCTION WITH RELEASE MECHANISM TO OBSTRCT MOUTH OPENING AFTER NET IS ACTAUTED TO CLOSE AT DEPTH.   CONSTRCTED FROM HEAVY REINFORCED POLYESTER MATERIAL, GROMMETED BOTH ENDS TO ACCEPT SS RING AND BRIDLE AND PLAIN LOWER RING (PRICED SEPERATLY ABOVE)

STANDARD RING DIAM. (CM)

30

50

75

100

STANDARD COLLAR HEIGHT. (CM)

20

75

100

120

PUGET SOUND COLLAR PRICE

100

150

220

275

CHOKE BAND ASSEMBLIES USED IN CONJUCTION WITH RELEASE MECHANISM TO OBSTRCT OR “CHOKE” MOUTH OPENING AFTER NET IS ACTAUTED TO CLOSE AT DEPTH. CONSTRCTED FROM HEAVY REINFORCED POLYESTER MATERIAL, GROMMETED, SS RINGS, THROTTLE ROPE W/ SS RING, COMPLETE

STANDARD PLANKTON NET DIAM. (CM)

30

50

60

75

100

CHOKE BAND ASSEMBLY PRICE

111

149

179

226

295

RELEASE MECHANISMS AND MESSENGERS

1. SNAP-SHACKLE RELEASE MECHANISM (FOR 15, 20 AND 30 CM DIAM. NETS AND DEPLOYMENTS LESS THAN 50 M DEEP, SHARP-TUG ACTUATES CLOSURE) COMPLETE W. TROTTLE STRAP/CABLE
INSTALLED: $141

2. SINGLE RELEASE MECHANISM. MESSENGER ACTUATED, POLYETHYELENE/SS
CONSTRUCTION, LIGHT DUTY, SOLID BRONZE MESSENGER 300 GM, COMPLETE: $195

3. SINGLE RELEASE MECHANISM. MESSENGER ACTUATED, CAST BRONZE, HEAVY DUTY,
WIRE STOP, ONE-EA CAST BRONZE SPLIT MESSENGER X 1000 GM, COMPLETE: $907

4. DOUBLE RELEASE MECHANISM. MESSENGER ACTUATED CAST BRONZE, HEAVY DUTY,
WIRE STOP, TWO-EA CAST BRONZE SPLIT MESSENGER X 1000 GM, COMPLETE: $1351

MESSENGER, CAST BRONZE, 1000GM, SPLIT W/ LANYARD, COMPLETE: $149
MESSENGER, CAST BRONZE, 333 GM,  SOLID, COMPLETE: $30 

COD END ASSEMBLIES, 2-PC PVC CONSTRUCTION, LOWER SECTION DETACHABLE WITH LATERAL APERUTRES AND LINED W/ SPECIFIED MESH, ALL COMPUTOR MADE, SS HOSE CLAMP, ANY MESH SIZE AVAILABLE, COMPLETE

STANDARD PLANKTON NET DIAM. (CM)

15

20

30

50

60

75

100

STANDARD COD END DIAM. (CM)

9

9

9

11

11

11

11

STANDARD COD END LENGTH (CM)

17

17

17

17

17

17

17

COD END PRICE

131

131

131

159

159

159

159





(OPTIONAL) EXTENSION ASSEMBLY FOR ABOVE COD END ASSEMBLIES USED TO INCREASE FILTRATION AREA OR RESERVOIR VOLUME ON ABOVE COD END ASSEMBLIES. AVAILABLE IN PERFORATED (SPECIFY MESH SIZE) OR NON PERFORATED FORM, COMPLETE

STANDARD PLANKTON NET DIAM. (CM)

15

20

30

50

60

75

100

STANDARD COD END DIAM. (CM)

9

9

9

11

11

11

11

EXTENSION ASSEMBLY LENGTH (CM)

15

15

15

15

15

15

15

EXTENSION ASSEMBLY VOLUME (ML)

500

500

500

1000

1000

1000

1000

EXTENSION ASSEMBLY NON-PERFORATED PRICE

80

80

80

110

110

110

110

PERFORATED PRICE (SPECIFY MESH)

119

119

119

150

150

150

150

(OPTIONAL) BALLAST WEIGHTS FOR ABOVE COD END ASSEMBLIES, USED TO INCREASE WEIGHT OF COD END ASSEMBLY, ZINK CONSTRUCTION W/ SS HARDWARE, COMPLETE

STANDARD PLANKTON NET DIAM. (CM)

15

20

30

50

60

75

100

STANDARD COD END DIAM. (CM)

9

9

9

11

11

11

11

BALLAST WEIGHT (KG)

0.5

0.5

0.5

1.2

1.2

1.2

1.2

BALLAST WEIGHT (KG) PRICE

11

11

11

17

17

17

17

 

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