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Solids, liquids and gases Solids, liquids and gases
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Equal Mass Density Set
Demonstrates the inverse relationship between density and
length for cylinders of the same mass and diameter. Consists of
five machine-turned cylinders, including one of each: copper,
aluminum, nylon, polyvinyl chloride and polyethylene.
C-3010-000
$ 12.95
Specific Gravity Specimens
Consists of 4 cylinders one of each: copper, iron, brass, and
aluminum. The volume for each of the cylinders is identical
(1.3cm in diameter by 5cm in length), while the mass is different.
C-1010-000
$ 12.15
Specific Gravity Specimens, Set of 10
All specimens have the same volume (approx. 1cc), but the
shape and the mass differs for each specimen. Packaged in a
plastic storage box.
C-1012-000
$ 14.30
Overflow Can
Unbreakable! Made of aluminum, with a spout and a flared edge.
10 cm in diameter by 13cm high.
V-3023-000
$ 11.55
Catch Bucket
Made of aluminum with a convenient handle. Can be positioned
under the overflow can's spout. 5cm in diameter and 7.5cm high.
V-3024-000
$ 12.75
Archimede's Principle Apparatus
Complete with bucket and cylinder. Consists of solid aluminum
cylinder in a close fitting aluminum bucket. Size: 19mm diameter
by 50mm high. Finest quality made in U.S.A.
C-3012-000
$ 18.55
Density Rod
This clever device, precisely calibrated to float in
cold water (30�C or below) and sink in hot water
(40�C or above), demonstrates the differing
density of a liquid at different temperatures.
Consists of a durable hollow aluminum cylinder, a
convenient size for most graduated cylinders. A
five page instruction booklet includes 4 student
experiments and a theoretical discussion of water
density. Dimensions: 65 mm long x 19 mm in
diameter.
C-3016-000
$ 19.75
Reverse Density Rod
Everyone knows water gets less dense as it gets
warmer. Then why does this rod sink in cold yet
float in less dense hot water? The answer lies in the
fact that the density of the rod also changes with
temperature. The rod becomes much less dense
at higher temperatures. It wins the race against
the heated water and floats, whereas the
aluminum rod sinks. Contains: High-density
polyethylene plastic rod, 1/2 in diameter,
weighted and tested; instructions with theory.
C-3016-200
$ 14.40
Density Blocks
Dimensions: 32x32x32mm, with
sturdy hooks. The lead cube has
a molded square hook.
B-1002-000
Brass
$ 12.50
B-1003-000
Iron
$ 8.45
B-1004-000
Copper
$ 15.65
B-1006-000
Aluminum
$ 8.65
B-3035-000
Lead
$ 13.95

Set of 5
Contains: All of the above (1 of each)
B-1000-005
$ 56.50

Set of 4
Contains Iron, brass, copper, and aluminum.
B-1000-004
$ 42.50
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291
Brownianscope
For observation of Brownian Motion:
� View particle collisions with air molecules,
� Vivid demonstration of kinetic theory of matter
� Low cost, simple to operate
� Illustrated instructions and history of Brownian movement
discoveries included.
B-1001-800
$ 89.40
Molecular Motion Demonstrator
Turns abstract kinetic theory concepts into visual images, easily
understood. Reproduces molecular behavior in gases, liquids
and solids with remarkable fidelity. Realistically simulates
changes in temperature, pressure and volume. Operates on
110V AC with stepdown transformer; solid state electronics;
precision speed control. Fits on any overhead projector.
Shipped complete with comprehensive study guide.
For optimum results in teaching these kinetic theory concepts:

Random motion of molecules
Diffusion of gases
Three states of matter
Condensation
Temperature
Brownian motion
Pressure
Boyle's Law
Avogadro's hypothesis
Charle's Law
Van der Waals forces
Solids and liquids
Changes of state
Graham's Law of Diffusion
Mean free path
etc. etc.

M-9150-000
$ 634.00
Whats the Density Set
A new twist on the old "black box" - our
mysterious "black specimens"! Here's
another take on the study of density, a
tricky concept all science classes must
master. What's the density set contains
twelve specimens with the same diameter
but of different lengths. To the eye, these specimens appear to be
made from the same type of plastic, but are they? Your class will
conclude that the specimens represent two different types of
plastic - which is exactly right! This kit includes an attractive wood
holder and comprehensive instructions.
C-3009-900
$ 50.15
Equal Mass Metal Cylinder Set, 5 pieces
Consists of 5 cylinders, including one of each: aluminum, copper,
lead, tin, and zinc. Each cylinder has a mass of 29g and a
diameter of 13 mm.
M-1052-000
$ 25.90
Equal Volume Set, Square, 4 pieces
Consists of 4 blocks, including one of each: aluminum, brass,
copper, and steel. Dimensions: 1.3 cm x 5 cm.
M-1090-000
$ 14.15
Specific Gravity Specimens
This set contains 10 different specimens packaged in a see-
3.
through compartmented box. Each is approximately 4cm
Includes: Cylinders of Steel, Aluminum, Brass, Acrylic and
Carbon; Blocks of Lead and Zinc; Sulphur and Marble chips and
a Cork.
M-1054-000
$ 25.25
Density ID Set
Its a puzzle - its a lab - it will separate the sheep from the goats.
Ask your class to identify each of twelve different samples by
determining their density. Each cylinder varies in size and density
since it is constructed of a different material. All are 1cm in
diameter and range between 4 and 7 cm in length. Includes: 12
samples, an attractive wood storage rack coated in linseed oil for
protection from wet specimens, instructions.
C-3009-200
$ 57.60 Solids, liquids and gases
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Osmosis Apparatus, Bladder Form
Consists of a glass tube with funnel (45cm long), and an animal
bladder attached to the other end. When the bladder is filled with
a sugared solution and immersed in a water filled jar, the level of
liquid in the tube reveals the osmotic pressure.
P-1501-600
$ 20.70
P-1501-500
Replacement bladder
$ 8.65
Dialysis Bag Holder
Suspend dialysis bags in large beakers with these strong clips.
Package of 6.
S-6831-006
$ 21.75
Osmosis Apparatus
and Accessories
Includes double thistle tube
(40cm long) with membrane,
metal holder, and 12.5 x 17.5cm
jar.
P-1501-700
$ 56.25
Replacement
Double Thistle Tube
P-1501-400
$ 19.90
Osmosis Simulation Activity Model
Quick and easy demonstration provides a solid understanding of
osmosis and how it occurs. Your students will gain insight into this
critical process as water diffuses across a semipermeable
membrane from an area of higher concentration to an area of
lower concentration. The process can be repeated using a variety
of solutes in varying concentrations to observe the change in
results. The outcome can even be quantified by measuring the
amount of liquid that traveled across the membrane. Includes
display stand. Size: 164 x 38 x 176 mm.
K-5001-125A
$ 79.65
Dialysis Tubing
These regenerative, cellulose, seamless tubing is ideal to hold
liquids to be dialyzed. Length: 3m or 15m

Ref #
Flat Width
Filled Dia.
Price / 3m
15m
T-8094-016
25 mm
16 mm
$ 7.05
$ 25.05
T-8094-021
33 mm
21 mm
$ 7.75
$ 28.30
T-8094-027
43 mm
27 mm
$ 8.10
$ 30.20
Glucose Test Strips
This strip is primarily used in biological courses for the detection
of glucose concentrations. It has a primary use in osmosis and
diffusion experiments, where one is looking for differences in the
diffusion of starch when compared to glucose, in a semi
permeable membrane system. Detects 0 to 3000 mg/dL. 50
strips per bag.
P-1000-050
$ 27.70
Osmosis and Diffusion Kit
In this lab activity, everything is provided for 30 students to set up
a simple lab activity where they can observe diffusion through a
membrane in two directions at the same time! In addition, they
can observe the selective permeability of a membrane in that
some substances can pass through a membrane and others
cannot. Kit contains enough material for 30 students to perform
the activity individually and simultaneously. A technique
filmstrip/cassette is available which encourages independent
study.
�
K-3022-000
Lab-Aids #22
$ 114.00
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