educational materials - SPECTRUM Nasco Shopping Mall Divisions

Lab Supplies
General
Bell Jar and
Vacuum Set
This apparatus allows for a
number of impressive demonstrations
regarding vacuum and
air pressure. Clearly shows the
method by which a pump works.
Demonstrates that air has mass
and how to find the mass and density
of an air sample. Shows that a
sealed balloon will expand when
the surrounding air is removed
and how a suction cup is held on
by external pressure, rather than “suction.” Demonstrates liquids boil at reduced temperature
when under reduced pressure. Reproducible pages in instruction manual guide
students through the experiments. Also includes follow-up questions, as well as teacher
notes and answers. Grade 6 through college. One-year warranty. Sh. wt. 0.63 kgs.
SB34811M — $43.15
Aspirator Filter Pump
Recommended for vacuum filtrations. Operates efficiently
on both high and low water pressure. A ball-type
positive-acting valve in the suction tube prevents backflow.
Nickel plated with serrated tail and side arm. Water inlet: 3 /8"
IPS tapered. 3" (76 mm) long. Sh. wt. 0.14 kgs.
SB08101M — $19.35 ea.; 10 or more — $18.77 ea.
BEST
SELLER
VACUUM/PRESSURE PUMPS
Laboratory High Vacuum Pump
This direct drive pump provides the best performance/cost
ratio available. Comes ready to
operate. Two stage pump produces 1-micron
ultimate pressure. Rotary sliding vane
provides free air displacement of 85 liters
per minute (3 cfm) capacity and operates
quietly. Direct drive reduces space
needed. Gas ballast helps purge moisture
from vacuum system. Trap reduces
risk of oil suck back into the system.
Pump speed: 1725 RPM. 1 ⁄2 HP motor,
110V 60 Hz. Oil capacity: 27 oz. (785 cc).
Operating temperature: 30° F to 170° F. Intake
port: 3 ⁄8" OD for 3 ⁄8" ID tubing. Dimensions: 11"
H x 14" L x 5 1 ⁄4" W. Comes complete with initial
supply of high vacuum pump oil.
Sh. wt. 12.70 kgs.
SB21238M — $873.20
With Gauge. 2 1 ⁄2” dial, 0-30” Hg Bourdon type steel-case vacuum gauge securly
mounted to the intake. Sh. wt. 31.88 lbs.
SB43860M — $938.35
High-Vacuum Pump Oil. Suitable for mechanical high-vacuum pumps. Low vapour
pressure. Sh. wt. 3.50 lbs.
SB45665M — $13.15
High-Vacuum Tubing. 5 ft. of high-vacuum tubing with clamps.
Sh. wt. 1.25 lbs.
SB47498M — $36.30
SA08839M
Hand-Operated
Vacuum Pump
This pump attains and holds a vacuum
of 25" of mercury with just a few squeezes
of the handle. Comes equipped with
a gauge to monitor vacuum in both
centimeters and inches of mercury. Has
a pumping rate of 15 cc per stroke and
gives 3 psi positive pressure at outlet
point. Nozzle fits standard 1 /4" tubing
and includes 2 ft. of tubing. Sh. wt. 0.29
kgs.
SA08839M — $40.80
Vacuum Pump Plate
Accommodates jars up to 9" in diameter.
Fabricated from 1 /2" steel plate for strength,
and surface ground flat to provide a good
seal. Nickel-plated for corrosion resistance.
Comes complete with a barbed hose
connection, vacuum release valve, and a
rubber gasket to provide a tight seal. Sh.
wt. 7.88 kgs.
SB21266M — $288.60
1-gal. Vacuum
Chamber — Nalgene
®
This vacuum chamber consists of an unbreak-
able polycarbonate bell jar with polypropylene
vacuum plate with
1 /4" tubing connection at
the rim. Connects to any convenient vacuum
source or a mechanical pump. Will withstand full
vacuum. DO NOT AUTOCLAVE. Intended only for
student demonstrations of vacuum procedures.
Sh. wt. 1.56 kgs.
SA08835M — $173.45
Vacuum Pump with Pump Plate
Plate is constructed with a rubber seal for pump plate that facilitates sealing in bell jar
experiments. The plate can also be used with electric vacuum pumps. 200 mm dia. Sh.
wt. 10 lbs.
SB48288M — $122.30 ea.
Two-Stage Laboratory Vacuum Pump
With an easy-to-carry design,
this vacuum pump is small, lightweight,
and portable. This powerful,
high-performance pump
comes ready to operate. Free air
displacement: 2.5 cu. ft./min. at
50 Hz and 3.0 cu. ft./min. at 60 Hz.
Runs steadily for a long period of
time. Voltage: 115V/60 Hz. Motor:
1⁄3 HP. Oil capacity: 250 ml.
Comes complete with initial supply
of high-vacuum pump oil.
Sh. wt. 34 lbs.
SB47761M — $386.75
282
Tel: 1.800.668.0600 Fax: 1.800.668.0602