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Ground
Water Instruments
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Testwell
Water Level Meter
For measuring
the depth of water in wells, boreholes, and standpipes, the
Testwell Water Level Meter is accurate to 1/100 ft or one millimeter.
The meter
uses a choice of probe designs, attached to a permanently marked
polyethylene tape, fitted on a well-balanced reel. It is powered
by a standard 9 volt battery housed in an easy-access battery
drawer. More details at Testwell
Water Level Meter
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Testwell
Oil/Water Interface Meter
The Testwell
Oil/Water Interface Meter is the first small diameter (7/16",
12mm OD) Interface Meter which detects floating or sinking hydrocarbons
down to 1/2 mm or 1/200 of a foot. A 5/8" (15mm) diameter stainless
steel probe, which has all of the features of the smaller 7/16"
diameter probe, is also available.
The Testwell
Interface Meter measures both LNAPLs and DNAPLs with a pressure
proof stainless steel probe. More details at Testwell
Oil / Water Interface Meter
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Waterra
12 Volt Submersible purging and Sampling Pump
The new Waterra
12 Volt Submersible Pumps can lift from 25 to 70 feet and are
designed specifically for well purging and sampling procedures.
The high performance DC electrical motor is suitable for continuous
running - no cool down required (up to 5 hours), and the long
life motors last up to 100% longer than competitors' models.
Four models
are available: the single stage WSP-12V-1 with 25 foot lift and
35 foot power cable, the double stage WSP-12V-2 with 40 foot lift
and 60 foot power cable, the three stage WSP-12V-3 with 55 foot
lift and 70 foot power cable and the four stage WSP-12V-4 with
70 foot lift and 80 foot power cable.
All four pumps
are supplied with alligator clips and adapt to 1/2 x 3/8"
low-density poly tubing. All of these pumps can greatly speed
up the process of purging and sampling monitoring wells, especially
if dedicated installations are used. These pumps are complete
and ready to use, and an optional on/off switch for the power
cable allows the user to switch pump on and off without having
to disconnect from power supply. Waterra
12 Volt Pump Specifications
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Solinst Peristaltic Sampling Pump
The Solinst
Peristaltic Pumps is designed for vacuum pumping or pressure delivery
of liquids or gases. They are ideal for sample removal from shallow
wells and surface water.
The mechanical
peristaltic operation is effective to depths of approximately
33ft or 10m at sea level, limited only by the suction lift limit
which varies with elevation.
The Solinst
Peristaltic Pump has variable pumping rates and can be fitted
with 2 different sizes of silicon pump-head tubing. With the 3/8"
OD (10mm) tubing the pump delivers a sample rate as low as 40
ml/min and up to 900 ml/min. If the 5/8" OD (16mm) tubing
is used, it delivers from 120 ml/min to almost 3.5L/min.
The Solinst
Peristaltic Pump is very compact and easy to use. It measures
13" x 5" x 6-1/2" (32cm x 13cm x 17cm) and weighs
only 8lbs (3-6Kg). The metal case is extremely robust, water resistant,
and has no grates or openings. A handle and easy-access controls
on the top of the pump make it perfect for field work.
The pump operates
using any 12 volt DC power source (battery) which can supply at
least 3-5 amps at maximum draw. More detail at Solinst
Peristaltic Pump |
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Redi-Flo2 Portable AC Purge & Sampling Pump System
 Designed
for portable, efficient and reliable sampling of wells for ground
water purging and monitoring, the Grundfos Redi-Flo2 has taken
the complex process of ground water monitoring and made it simple.
Both high flow rates needed for purging and low flows recommended
for sampling are achieved with the same pump. The Redi-Flo2 is
designed for both dedicated and non-dedicated sampling installations.
More details at Redi-Flo2 Pump System
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Micro-Flo Low Flow Purge Bladder Pump
 The
Micro-Flo System low flow methodology makes use of the bladder
pump with specific objectives: Purge at low rate, ranging from
200 to 500ml per minute; monitor static water level during purging
to maintain constant level; monitor water parameters - pH, Temperature,
conductivity, DO, turbidity, etc. Once specific target parameters
stabilize, acquire the sample by reducing the pump flow rate to
100ml per minute. By adopting the low flow methodology over conventional
methods, a more representative sample can be acquired in less
time. More details at Micro-Flo Bladder
Pump
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PRS Product Recovery System
 Designed
for field portability, rapid installation and efficient recovery
of floating hydrocarbons the PRS incorporates a stainless steel
bladder pneumatic pump coupled with a unique floating skimmer
attachment. This skimmer attachment is available for 2 inch and
larger wells and can accommodate ground water fluctuations in
excess of 12 inches. The 4 inch model can accommodate ground water
fluctuations in excess of 24 inches. More details at PRS Recovery System
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PRC
Product Recovery Canister
 The
Answer to your "Passive" Hydrocarbon Recovery Needs, this device
will automatically collect floating product down to a sheen. The
easily installed PRC is a passive, floating skimmer device designed
to separate and recover light hydrocarbons from ground water.
After recovery, the product is evacuated from the device through
a discharge valve at the bottom of the canister. Featuring a hydrophobic
filter buoy for product recovery without water, the PRC skimmer
has a travel in excess of 12" to compensate for water table fluctuation.
Available for 2" or larger monitor wells, the PRC has a 0.5 liter
capacity and requires no external means of power. A 1 liter capacity
model suitable for 4" wells, with 24" of travel, is
also available.
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1.5",
0.7" Waterra Clear PVC EcoBailer
 The
Waterra Clear PVC EcoBailer is an eco-friendly product that is
heavier than conventional weighted bailers without the addition
of bulky and costly weights. A better weight distribution allows
the EcoBailer to sink straighter and the efficient valve design
makes it the fastest sinking bailer on the market. For a super
fast sink rate you can utilize the 7/8" stainless steel weight
that can be easily screwed onto the bottom spout of the bailer
and reused when needed - no other bailer offers this innovative
reusable weight system. Made of clear virgin PVC the EcoBailer
allows you to inspect your sample while still in the bailer.
These bailers are designed with a special valve and valve seat
to provide more positive sealing and less clogging when removing
the bailer from the well. The 1.5" (1 litre capacity) and
the narrow 0.7" (200 ml capacity) bailers, come with a longer
bottom emptying spout that helps prevent silt from interfering
with the check ball and causing potential leakage. They also assist
in collecting non-aerated samples from the valve end of the bailer,
which is ideal for VOC sample collection. Waterra Clear PVC EcoBailers
are easily adapted to the Waterra FHT-45 Disposable Filter for
collection of samples for metals analysis directly from the bailer.
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Inline
Disposable 0.45 Micron Filter
The Waterra FHT-45 offers the most surface area available in capsule
type filters today. The unique open pleat geometry and 700 square
cm surface area provide the maximum media exposure while ensuring
that even with the most turbid samples, you will not lose filtration
media to blinding.
The Waterra
FHT-45 uses high quality polyethersulphone 0.45 micron filter
media that offers excellent particle retention above the target
micron size range, and the high void volume of this media also
helps prolong media life. It also offers the user greater flexibility
by providing a compound inlet - it has both a 3/8" threaded
nipple and a 1/2" hose barb allowing the filter to be attached
easily to a variety of pumps and tubing sizes.
The new medium
turbidity Waterra FMT-45 has all of these great features as well,
but with a reduced surface area at 300 sq. cm. These filters provide
an economical alternative for lower turbidity sampling, when the
highest possible capacity is not required.
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