Snow Sampler is a professional grade snow sampler based on USFS
design criteria to measures snow depth and water content to determine
is made with 1 5/8" (4.13 cm) ID anodized aluminum material. The
sampler can be specified in english or metric units with the standard
USFS length in 30" long sections and the metric in 0.83 meter
long sections. The tubes are precision hand machined to a very
tolerance for accurate water equivalent measurements. A sensitive
spring balance is graduated in either equivalent inches or centimeters
sets can be ordered with up to eight sections and includes a 3
oz, 16 tooth cutter typically used for sampling snow packs up
to 30 feet (9 meters) deep. For deeper sampling or snow packs
with layers of heavy ice, the thicker walled McCall sampler with
6 oz cutter is recommended.
is the Metric Prairie Snow Sampler with alloy tube, hardened steel
cutter and screw-in T-handles. Based on the Environment Canada
ESC 30 design, it is 1.2 meters long with a 6 cm internal diameter
and is available with a spring scale and cradle.
Survey Staff Gauge
section is accurately graduated into centimeters with each decimeter
numbered and finished with a special porcelain enamel to ensure
easy reading and to resist rust or discoloration.
gauge is one meter long, 8 cm wide, and is provided with grommeted
holes for fastening. Gauges for any elevation may be assembled
by using separate number plates consisting of a blue numeral on
a 5.08 cm x 7.62 cm white porcelain enameled iron plate.
sampler is designed for industrial discharge, sewer, river, and
stream monitoring applications. It consists of a rugged, rain-proof,
lockable enclosure, 2-gallon polyethylene sample bottle, peristaltic
sampling pump, logic timer/controller, and rechargeable gel cell
battery. Also provided is a 15' nylon reinforced 1/4" ID
polyethylene flexible sample pickup hose with intake strainer,
and battery charger. The sample bottle is equipped with a float
switch that automatically turns off the sampler pump if the bottle
becomes full. The user can adjust the desired sample size from
25 ml to 600 ml, and sample internal from 5 minutes to 4 hours.
Dorn Sampling Bottle
bottle is ideal for physical (temperature), chemical (dissolved
gasses, nutrients) and biological (photo-zooplankton) sampling
in shallow to very deep water. Also, this nonmetallic sample containment
system can be used for trace metal sampling. Closure of the bottle
is by means of a messenger from the surface releasing the tension
on a latex band and thus pulling the two stoppers firmly into
place. The tough clear polycarbonate cylinder enables previewing
before draining and also permits mounting a thermometer inside.
Multiple samplers on a single wire can be deployed for serial
("in-series") collection of water at various depths. A horizontal
version, very similar in construction and operation to the vertical
bottle, is available for sampling near the bottom or in the vicinity
of thermoclines or chemoclines. The Van Dorn Bottles are also
available in PVC and come in many sizes complete with brass messenger,
100 ft line and carrying case.
are designed for sampling riffle areas in streams and rivers up
to a depth of about 18". It consists of two folding stainless
steel frames set at right angles to each other. The horizontal
frame encloses an area of 12" x 12" and marks out the limits of
the sampling area. Attached to the vertical frame is a net to
catch the invertebrates as they are dislodged from the substrate.
The net is approximately two feet in length and is made of tough,
rot-resistant 500 micron (35 mesh per inch) Nitex monofilament
net. A base height extension may also be used when the horizontal
frame must penetrate into the actual stream bed itself. The surber
stream bottom sampler folds flat for easy storage and comes complete
with a wooden carrying case. Replacement Nitex nets and samplers
with other micron net sizes are available.
a Surber Sampler but suitable for gravel and cobble bottoms, the
Hess Sampler consists of a circular aluminum frame that is pushed
into the substrate. It has two strong reversible handles for forcibly
pushing and rotating the cylinder into stream bottoms. Both ends
of the cylinder can be used for sediment penetration. The sampler
penetrates 3 - 6" (75 - 150 mm). Once in place, the substrate
is stirred up, and organisms are washed into the collecting bag
by the current flowing through the mesh covered opening. Hess
Samplers include a cylindrical aluminum net frame (36 cm diameter
x 46 cm height), and a heavy duty Nitex net, 243µm, 363µm,
600µm, 800µm or 1000µm with sewn-in poly-bottle,
cod end or net. The inflow screening is attached to the frame
with Velcro and is removable.
Plankton Net is a popular and versatile plankton sampler. The
main design feature is the anterior reducing cone which makes
it more efficient than a standard conical net. The Wisconsin net
is used only for vertical sampling tows. The sampler consists
of three major parts: an anterior reducing cone, a posterior conical
filtering net, as well as a collection bucket. It
measures 30" long with a 5" diameter mouth opening.
The net is 7" in diameter where the filter net meets the
reducing cone. It is constructed with stainless steel net frames,
brass bridle and Nitex nylon net with 80µm mesh or 153 micron
standard net sizes, other sizes are available.
Sediment Core Sampler
Core Sampler consists of a stainless steel cylinder that defines
the portion of the streambed to be sampled and an attached basin
that is used to store the collected sediments and trap the suspended
fines. The sampler is worked into the channel substrate, and the
encased sediment core is dug out by hand and deposited in a built-in
basin. When all sediments have been removed to the level of the
lip of the core tube, a cap is placed over the tube to prevent
water and the collected sediments from escaping when the tube
is lifted out of the water. The tube has a 4" diameter and
is 8" long, and the basin has a 12" diameter and is
dredge is useful for sampling benthic communities inhabiting soft
bottomed aquatic environments. As the dredge is lowered, the hinged
upper doors swing open, allowing water to pass through and minimize
the shock wave. When the dredge reaches the bottom, a messenger
is sent down the line which trips the spring-loaded jaws. The
jaws snap shut, preventing washout of the sample. The dredges
are constructed of stainless steel with special Heliarc welding
for extra strength and trouble-free life. A simple cable release
system with convenient bar grip enables the operator to set the
dredge with greater safety. Available 6"x6"x6"
or 9"x9"x9", the Ekman Dredge comes complete with
a stainless steel messenger 100 ft line and carrying case.
proven design of the heavyweight grab sampler facilitates its
use in all types of bottom substrates, except hard-packed clays.
A simple pin mechanism prevents accidental closure of the dredge
while in transit. The new improved spring-loaded release mechanism
triggers the dredge upon impact with the bottom. The top of the
dredge is covered with stainless steel screens to reduce the frontal
shock wave and prevent the escape of the sample upon retrieval.
The screens are removable to access the sediment sample without
opening the jaws. The simplicity of its design and the rugged
stainless steel jaw construction will ensure the dependability
of the dredge for many years. Available 6"x6" or 9"x9",
with powder painted weights and control arms or in an all stainless
samplers are designed to continuously extract a sample as they
are lowered from the water surface to the streambed and returned
at a constant rate of travel. Ascending and descending speeds
need not be the same, but the rate of travel must be constant
in each direction. While the sample is collected, air in the container
is compressed so that the pressure balances the hydrostatic pressure
at the air exhaust and the inflow velocity is approximately equal
to the stream velocity. All depth integrated samplers can be supplied
with a special epoxy coating for chemical and trace metal sampling
are designed for the measurement of the relative turbidity and
clarity of water. The 8" diameter disc is constructed of polycarbonate
with a lead weight, and is finished in alternating black and white
quadrants of acrylic paint.
The disc is
lowered into the water on a graduated line. The depth at which
the disc is no longer visible is recorded. The disc is then raised,
and a recording of the depth at which the disc reappears is made.
The mean of
these two recordings is considered to be the limit of visibility.
Although the disc is unable to provide an actual measure of light
penetration, it is useful in providing a rough index of visibility
for comparative purposes.
Whirl-Pak sample bags are made from blended virgin, low-density
polyethylene, giving the bags two important characteristics; exceptionally
clear film which is easy to see through, and superior strength.
They can be used for taking samples of liquids, semi-solids, or
solids. The film thickness varies from 2.25 mil (.057 mm) to 4
mil (.102 mm) depending on the size and style. All Whirl-Pak bags
feature puncture proof tabs that extends the tape on the tab past
the wire ends eliminating the sharp points which could puncture
the bags, scratch a person's hands, or puncture gloves. Whirl-Pak
bags are sterilized with ethylene oxide gas by an independent,
ISO certified sterilization company wghich saves valuable preparation
time and eliminates concern about sample integrity.
bags use only 10% or less space than other containers, saving
valuable space in the lab, vehicle and warehouse, and significant
savings on shipping costs, plus are easy disposed after use. By
whirling or tightly folding the tab over three times, the Whirl-Pak
bag becomes a leakproof container, which eliminates the loss of
a valuable sample, and prevents impurities from entering the bag
and contaminating the sample.
sampling device enables you to take accurate readings on settled
solids in a variety of liquids, to any depth. Lower the Sludge
Judge to the bottom of the tank. When the bottom has been reached
and the pipe has filled to the surface level, tug slightly on
the rope as the unit is raised. This sets the check valve, trapping
the column of solids and liquid in the Sludge Judge. When the
unit has been raised clear of the liquid, the amount of solids
in the sample can be read using the one foot increments marked
on the pipe sections. To release the material in the unit, touch
the pin extending from the bottom section against a hard surface.
This opens the check valve to drain the sample.
Judge is ideal for sewage treatment plants, chemical plants, food
processing facilities anywhere that accurate samples of solids
in non-caustic materials are needed. The unit holds approximately
3 oz. Per foot. The Sludge Judge comes in three 5 ft. sections
of ¾" plastic pipe with screw type fittings. The top section includes
a nylon line for raising the sampler. Convenient carrying case
and cleaning brush are is available.