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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

 

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 PRICE LIST (US$)

CLOSING PLANKTON NET, NITEX NYLON, TRIPPLE STICHED, REINFORCED COLLARS, GROMMETTED

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

 

 

175

210

 

 

 

 

 

 

 

 

 

20

 

125

150

185

 

 

 

 

 

 

 

 

 

30

 

120

145

180

285

310

335

 

 

 

 

 

 

50

 

110

140

175

255

280

305

495

550

700

705

790

870

64

 

100

130

150

235

260

285

420

525

685

690

720

820

80

 

90

120

140

230

255

280

400

525

655

660

745

800

100

 

 

110

130

230

255

280

400

525

655

660

745

800

125

 

 

100

125

230

245

270

400

525

655

660

745

800

150

 

 

100

115

215

250

275

370

490

620

625

700

750

200

 

 

95

115

205

225

250

370

490

620

625

700

750

250

 

 

95

110

205

225

250

370

490

620

625

700

750

300

 

 

95

110

205

225

250

370

490

620

625

700

750

333

 

 

95

110

200

220

245

345

450

580

585

670

720

363

 

 

95

110

200

220

245

345

450

580

585

670

720

500

 

 

90

105

190

210

235

335

400

540

555

640

665

700

 

 

90

105

190

210

235

335

400

540

555

640

665

750

 

 

90

105

190

210

235

335

400

540

555

640

665

1000

 

 

90

105

190

210

235

335

400

540

555

640

665

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

50

70

140

170

200

220

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 OBSTRCT MOUTH OPENING AFTER NET IS ACTAUTED TO CLOSE AT DEPTH.  CONSTRUCTED FROM HEAVY REINFORCED POLYESTER MATERIAL, REINFORCED AND GROMMETED BOTH ENDS TO ACCEPT SS RING AND BRIDLE AND PLAIN LOWER RING (PRICED SEPERATLYABOVE).

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

105

155

270

300

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

90

125

130

180

200

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: $125

2. SINGLE RELEASE MECHANISM. MESSENGER ACTUATED, POLYETHYELENE/SS
CONSTRUCTION, LIGHT DUTY, SOLID BRONZE MESSENGER 300 GM, COMPLETE: $175

3. SINGLE RELEASE MECHANISM. MESSENGER ACTUATED, CAST BRONZE, HEAVY DUTY,
WIRE STOP, ONE-EA CAST BRONZE SPLIT MESSENGER X 1000 GM, COMPLETE: $895

4. DOUBLE RELEASE MECHANISM. MESSENGER ACTUATED CAST BRONZE, HEAVY DUTY,
WIRE STOP, TWO-EA CAST BRONZE SPLIT MESSENGER X 1000 GM, COMPLETE: $1250

MESSENGER, CAST BRONZE, 1000GM, SPLIT W/ LANYARD, COMPLETE: $125
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

110

110

110

150

150

150

150

(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)

95

95

95

140

140

140

140

(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

9

9

9

15

15

15

15

 

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