PLANKTON NETS

WATER SAMPLERS

SEDIMENT CORERS

PLANKTON SAMPLERS

LABORATORY EQUIPMENT

Universal Percussion Corer

UNIVERSAL CORE HEAD

• Polyethylene, polycarbonate and stainless steel construction
• one-way check valve core retainer
• rubber coupler sleeve
• 10m x 10mm diam
• polyester lowering line
• linereel
• one-ea. thin-walled-clear polycarbonate core barrel (68 mm x 71 mm x 120 cm)
• “T”-handle, core extruding plug
• poly end caps
• spares
• toolbox carry case
• hexdriver, complete: $295.00

• Bronze Gravity Weights, 4 kg each (five-max. capacity) complete: $59
• Aluminum holobar extension rod w/ stainless steel couplers (40mm diam. x 2.4m): $122
• Aluminum holobar extension rod w/ stainless steel couplers (40mm diam. x 1.2m): $69
• Slide hammer assembly, bronze and stainless steel construction: $105
• Clear polycarbonate core barrel with poly end caps: 68 mm x 71 mm x 240 cm: $75
• Clear polycarbonate core barrel with poly end caps: 68 mm x 71 mm x 120 cm: $45
• Clear polycarbonate core barrel with poly end caps: 68 mm x 71 mm x 60 cm: $25
• Polyester Lowering Line x 10mm diam. X 10 m: $25

Notes: Simple, versatile, and easy to use. Thin-wall core barrels and positive check valveassembly collects quality samples in a variety of sediments and conditions. An excellent quality brass check valve provides good flushing and positive vacuum to retain cores during recovery, without core catchers.

Upon retrieval, one must plug the bottom of the core tube before breaking the air-water interface (with core extruding plug or poly end cap) to prevent loss of sample. Clear polycarbonate core barrel material readily available at most plastic distributors.

Core extruding plugs allow one to incrementally extrude sediments upward with aid of a Core Extruding Apparatus. Core barrels can easily be drilled/plugged (for pore water extraction), serrated, cut and split to meet the special needs of the investigation.

The Universal Core Head can be deployed in a variety of ways:

1. In shallow lakes: Aluminum holobar extension rods to maximum water depth up to 15m. Provides: good “feel” for the sediments, good control of penetration depth, long cores of the water-sediment interface.
2. In deep lakes: Polyester Lowering Line with Bronze Gravity Weights and/or Slide hammer assembly. Sampler is gently lowered into the sediments to recover undisturbed samples. For deeper penetration, the slide hammer assembly can be raised and dropped (on a separate, small diam. wire, not included) “T”-handle.
3. In shallow water or SCUBA: “T”-handle with or without a Slide hammer assembly can be used in shallow marsh and wetland conditions.