educational materials - SPECTRUM Nasco Shopping Mall Divisions

D.O. Pen
Measures dissolved oxygen to determine water quality
in environmental testing, labs, industrial and municipal
waste water, aquariums, and fish hatcheries. Designed
for simple, one-handed operation with automatic
temperature compensation and calibration to air. The
polarographic probe has a built-in temperature sensor
and easy-to-replace, pop-off probe heads. Simultaneously
displays dissolved oxygen and temperature readings.
Temperature range: 32° F to 122° F (0° C to 50° C).
Water-proof. Comes ready to use in a soft carrying case
with belt loop, two spare probe heads, electrolyte, and
four “AAA” batteries (included). Sh. wt. 1.25 lbs.
SB47707M — $380.80
Benchtop Water Testing
Meters
Rugged housing with large LCD
displaying the parameter being
measured together with time,
date, and temperature (in °F or °C).
Features automatic or manual temperature
compensation, automatic
or manual ranging, automatic buffer
recognition, digital and analog outputs,
min/max and 99 data points,
data hold, calibration points, and
electrode status indication. 8-1⁄2" x
6-1⁄2" x 2-1⁄4". Five-year warranty.
Sh. wt. 3.50 lbs.
Conductivity/TDS/Salinity Meter.
Features five calibration points on
conductivity and TDS (total dissolved
solids) and two for salinity.
Includes ATC conductivity electrode,
electrode holder arm, AC adapter,
computer cable, and software.
SB48391M — $387.05
Water Quality Meter. Reads pH, ORP (oxygen reduction potential), MV, conductivity, TDS,
salinity, and temperature. Features five calibration points. Includes ATC conductivity and
pH electrodes, multiple electrodes holder arm, AC adapter, computer cable, and software.
Also accepts any pH or ORP probe with a standard BNC connector.
SB48392M — $507.85
Water Monitoring Kit
No other test kit on the market compares
to this low-cost, portable, easy-to-use
water testing kit. Students will have fun
analyzing sample water for eight different
test factors. Comes complete with
all the necessary apparatus, nonhazardous
TesTabs ® , diagrammed, step-by-step
instructions and colour chart. Use this kit
to explore the water quality of natural
aquatic systems nearby. Contains everything
you need to test for phosphate,
temperature, turbidity, coliform bacteria,
pH, dissolved oxygen, biochemical oxygen
demand, and nitrate. Can be used to test
fresh, brackish, or saline aquatic environments.
Grade 4 and up. Sh. wt. 0.48 kgs.
SB33597M — $40.80
Earth Science
Water
Watershed Tour
Introduce students to stream and river
ecosystems through a classroom-based
tour of a virtual watershed. Designed for
teachers who are unable to visit a stream
with their students. Your students will
learn about stream ecology, water quality
issues, and their own connection to a
watershed. Through a week-long series
of hands-on TesTabs ® tablet tests, games,
and activities, students will “test” four
sites along a river continuum — from the
headwaters to the mouth of the river as
it enters the estuary — to study how the
river changes and how human activities
can influence water quality. Includes lecture materials, illustrated handouts, teacher’s
tips, test procedures, TesTab ® reagents, data sheets, and games. TesTab ® reagents and
test tubes for 30 students in groups. Grades 4—8. Sh. wt. 2.27 kgs.
SB33593M — $96.35
Reagent Refill for Kit Above. Sh. wt. 0.48 kgs.
SB33594M — $15.80
Dissolved Oxygen TRACER PocketTester
It floats! This waterproof PockeTester can be intermittently submerged to a
depth of 3 feet, and the waterproof feature makes cleanup easy and quick. Oxygen
level displayed as % saturation from 0 to 200.0% or concentration from
0 to 20 ppm (mg/L). Adjustable altitude compensation: 0-20,000 ft. in 1,000 ft.
increments. Adjustable salinity compensation from 0-50 ppt. Memory stores
up to 25 data sets with DO and temperature reading. Features self-calibration
on power up, data hold, auto power off, and low battery indicator. Complete
with DO electrode, protective sensor cap, spare membrane cap, electrolyte,
four 1.5V SR44W batteries, and 48" neck strap. Sh. wt. 0.51 kgs.
SB40757M — $410.85
Dissolved Oxygen Test
Kit
Performs 60 tests.
1572M — $16.95
Spectrum Alkalinity Test Kit
1 drop = 10 ppm as CaCO 3
1574M — $40.95
Student Kick Net
This sturdy mesh net is ideal for student
macroinvertebrate collection. Durable mesh
net measures approximately 35" x 45", has a
1
⁄32" mesh size, and 3" pockets on opposite
sides hold poles in place. Poles not supplied
with unit but can be purchased at any local
hardware store. Grade 5 and up. Sh. wt.
2.19 lbs.
SB43514M — $39.60
www.education.spectrum-nasco.ca
Dissolved Oxygen Test Kit
Adequate amounts of dissolved oxygen are crucial for fish life. Investigation into the
amount of dissolved oxygen in a stream is easy with this kit. To calculate concentration,
simply add an indicator to the sample, then use the dropper to add titrant until the
colour changes. Typical accuracy is ±1 drop for titrations requiring up to 20 drops and
±5% for titrations requiring over 20 drops. Most titrations require 10 to 20 drops. Kit
based on a modified Winkler titration. Measure in two ranges: 0.2 to 4 mg/L and 1 to 20
mg/L. Grade 7 and up. Sh. wt. 1.47 kgs.
SB36635M — $76.15
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