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#1000 Anemometer.
The Anemometer is useful in determining wind speed. Made of corrosive
resistant materials for prolonged outdoor use. One cup is colored
red for ease in determining the number of rotations. The unit measures
220mm x 160mm. Instructions provided.
#203 Barometer Tube.
A capillary glass tube 4mm ID x 860mm long that is sealed on one end.
BELL JARS, MOLDED GLASS
Heavy duty glass bell jars are ideal fr studying the properties of
matter under a vacuum or for isolating experiments from outside interference.
The wall thickness is approximately 6mm. The domes measurements are
taken from the inside.
#201-4 Bell Jar with Fixed Knob 6" O.D. x 10" H
#201-5 Bell Jar with Fixed Knob 8" O.D. x 12" H
#201-6 Bell Jar with Fixed Knob 10" O.D. x 16" H
#201-7 Bell Jar with Ground Glass Stopper 6" O.D. x 10" H
#201-8 Bell Jar with Ground Glass Stopper 8" O.D. x 12" H
#201-9 Bell Jar with Ground Glass Stopper 10" O.D. x 16" H
#201-10 Bell Jar with Open Top 6" O.D. x 10" H
#201-11 Bell Jar with Open Top 8" O.D. x 12" H
#201-12 Bell Jar with Open Top 10" O.D. x 16" H
#203-2 Bell in Vacuum, Glass Dome.
As the air is pumped through the jar the sound of the bell becomes
faint and finally inaudible. Includes a 1/2 gallon glass bell jar,
electric bell, binding posts and instructions.
BE-1 Electric Bell Only
BOYLES LAW APPARATUS
#204 Boyle's Law Tube, Glass parts only.
Used as a replacement for the Boyle's Law J-Tube apparatus.
#204-1 Boyle's Law Economy J-Tube Apparatus.
This unit consists of a J shaped tube, meter stick, and cast iron base
mounted to a wooden board. This is used to demonstrate the relationship
of pressure and volume. Instructions provided.
#204-2 Boyle's Law Apparatus.
A funnel tube and a stopcock tube, connected together by a piece of
flexible tubing, run parallel to one another on aluminum rods. This
allows one of the tubes to be raised higher or lower than the other and
then it's locked in place. This unit stands vertical on top of a
cast iron base. Please note, mercury is not included. A heavy weight
oil can be used as a substitute for mercury.
#204-3 Boyle's Law Replacement Funnel Tube
#204-4 Boyle's Law Replacement Stopcock Tube
#305 Cartesian Diver.
A all glass constructed cartesian diver with a red band to make the
diver more visible.
#305-1 Cartesian Diver Unit.
Supplied with a Diver and Hydrometer Jar. A diver is placed in
a cylinder of water. Pressure on the cap forces water into the diver
causing it to sink. Instructions are included.
CENTRIFUGE TUBES
Standard Flint, Conical Bottom
#307-1-GR-DZ Centrifuge Tube, Graduated, -15ml
#307-1-GR Centrifuge Tube, Graduated, -15ml
#307-1-UN-DZ Centrifuge Tube, Ungraduated, -15ml
#307-1-UN-GR Centrifuge Tube, Ungraduated, -15ml
#306 Centrifuge Machine.
This Centrifuge Machine is equipped with a clamp for mounting to a
table up to 4cm thick. Made from enamel coated cast metal. It will
hold centrifuge tubes up to 15ml in capacity. The unit is approximately
30cm tall.
#301 Cloud Forming Apparatus.
This apparatus duplicates atmospheric conditions during cloud formation.
It consists of a special glass flask with a rubber hose connection, pinch
clamp, and large, thick walled, rubber bulb. By compressing and suddenly
releasing the bulb, a dense cloud forms in the flask.
#301-1 Cloud Apparatus, Bottle Cloud.
This cloud forming unit is mounted on an acrylic base, with two upright
steel rods and a crosspiece to hold the stopper in place when air in the
cloud chamber is under pressure.
#780 Coin & Feather Apparatus, with a Glass Tube (Guinea Feather
Tube)
#780-1 Coin & Feather Apparatus, with a Plastic Tube (Guinea
Feather Tube).
The cylinder is capped with a hard rubber closure at each end with
a hose connector at one end for air evacuation. When the tube is
inverted, and the air is removed, the disc and feather will fall at the
same rate because the feather does not meet any air resistance. Overall
length 47"
#310 Conductivity of Solutions, (Conductivity Tester).
For showing the electrical properties of liquids. Consists of
a molded socket on a PVC cover, provided with binding posts for connection
of two wire cords. Two electrodes are internally connected to the
lamp circuit. The cover is designed to fit a clear glass tumbler.
Light bulb, glass tumbler, and instructions sheets are provided.
#315 Conductivity Of Solutions with Plastic Jar
The unit the same as the #310, only provided with a plastic tumbler.
#303 Convection of Liquid, Glass Frame.
The water filled glass frame is heated at the bottom corner.
When observed, the movement shows the circulation of a hot water system.
#303-1 Convection Apparatus for Gases.
The box has a glass front and two chimneys. Smoke is introduced
in one chimney and observed traveling down into the box and back out through
the other chimney. Instructions, smoke paper and candle are included.
#1081 Density Rod.
Demonstrates the varying densities in liquids due to temperature change.
The rod floats in cool water and sinks when the water is heated.
Also shows density variances between fresh and salt water.
#330 Dew Point Apparatus.
Used to determine the dew point of the surrounding air. Consists
of a chrome tube on a plastic base, thermometer, air bulb, and inlet tube.
Instructions provided.
ELECTROLYSIS APPARATUS
#498 "Electrolysis Apparatus, Brownlee, with Jar.
This unit consists of an acid-proof, non-porous insulating supports
with a spring clip for holding test tubes, binding posts and two platinum
electrodes. The supports fit a 4 1/2 x 5"" battery jar and holds
150mm x 18mm test tube. Platinum electrodes and instructions are
included."
#499 Electrolysis Apparatus, Brownlee, without Jar
#499-1 Electrolysis Jar, Molded Glass 4-1/2" D. x 5" H.
#499-2 Electrolysis Apparatus, Brownlee, New Design.
This unit features several improvements over the standard Brownlee.
The open front spring clips make it much easier to remove the test tubes
while the tubes remain submerged. The test tubes have been graduated
for a clear measurement of the volume of gas generated. The black
acrylic background aids in viewing the water level while supporting the
test tubes. The binding posts have been reposititioned for easy access
and greater safety. The unit measures 140mm x 203mm x 38mm.
Instructions included.
#500 Electrolysis, Hoffman.
Graduated arms 19" in length with stopcocks at the top make it possible
for both qualitative and quantitive measurement of the effect of electric
current on liquid. Supplied with Support Stand, Burette Clamp, Platinum
Electrodes and Instructions. Graduated to 50ml in 0.2ml subdivisions.
Overall height is about 32".
#500-1 Electrolysis Apparatus, glass parts only. ( Replacement glass for #500)
#501 Electrolysis Apparatus, Collecting Tubes & Platinum Electrodes.
Designed for student experiments in electrolysis, this durable, easy-to-use
kit features two telescoping gas-collecting tubes graduated to 10ml.
Plus, high-quality platinum electrodes.
#501-1 Electrolysis Apparatus, with Ugraduated Tubes
The two arms of the U-tube are ungraduated and open at the top.
Rubber tubes and pinch clamp are used at the open ends to retain the gases.
EQUILIBRIUM APPARATUS
#502-3 Equilibrium Tube, with Capillary Tubes and Support Stand.
This apparatus demonstrates that capillary rise is dependent upon the
inside diameter of the tube. Four glass capillary tubes of different
internal diameters are sealed to a glass manifold. The unit is supported
by an acrylic stand. Instructions are provided.
#502-2 Equilibrium Tube, with Capillary Tubes
Replacement glass for #502-3
#502-4 Equilibrium Tube, Standard Tubes and Support Stand.
When connected vessels are filled with a liquid, the liquid will
rise to the same level in each vessel, regardless of the vessels shape.
Four different shaped glass vessels are sealed to a glass manifold.
The unit is supported by an acrylic stand. Instructions are provided.
#502-1 Equilibrium Tube, Standard Tube
Replacement glass for #502-4
FERMENTATION TUBES
#408 Fermentation Tubes, Durham
#601-1 Fermentation Tube, Large without foot
#601-2 Fermentation Tube, Large with foot
#601-3 Fermentation Tube, Small without foot
#601-4 Fermentation Tube, Small with foot
#601-5 Fermentation Tube Graduated 5ml
#650 Gas Diffusion Apparatus
This apparatus consists of two bottles connected with a glass tube.
A drop of hydrochlorid acid is placed in one bottle and ammonium hydroxide
in the other. When the colorless gases diffuse and meet, a white
cloud forms. Chemicals are not provided. Instructions included.
#700 Gas Generating Bottle, 250 ml
#700-1 Gas Generating Bottle, 500 ml
GAS MEASURING TUBE
#701-1 Gas Measuring Tube, 50 ml
#701-2 Gas Measuring Tube, 100 ml
#791 Harbottle Apparatus.
The Harbottle helps students understand the meaning of fluid pressure
and pressure sreduction. A Harbottle is a round, glass, container
with a balloon stretched over its opening and a hole in the flattened base
that is fitted with a rubber stopper. Students are amazed when the
balloon remains inflated inside the bottle even though it is not tied off
or sealed. Supplied with instructions.
#800 Hero's Engine.
The flask is partially filled with water and is suspended over a burner.
Rapid rotation takes place when the water boils. Steam escaping from
the pipes also illustrates the action-reactions principle. Consists
of chains with a swivel, a 250ml flask and a stopper. Instructions
provided.
#801 Hero's Fountain. Graphic Fluid Pressure Demonstration.
For a dramatic presentation. Just set up the Hero's Fountain,
put it on the counter, and pour water in its top. The fountain will spout
into the air for several minutes. How does it work? As water
in the fountains top reservoir enters the lower bulb, which contains air,
the air is forces up to the top bulb, compressing the air in that bulb,
and forcing the water to spout out of the upper tube. Entire unit
is 50cm high. Instructions are provided.
#802 Hot Water Heater Demonstration.
The apparatus is designed to demonstrate the operation of a low pressure
steam heating system. The flask in the demonstration apparatus corresponds
to the boiler in a heating system, the tubes correspond to the steam and
return lines, and the collection chamber corresponds to the radiator.
If colored water is used in the flask, it can readily be seen that
the water in the collection chamber is condensed steam by the fact that
it has no color. Instructions provided.
#802-1 Hot Water Heater, glass parts only
All stoppers, tubing, and glass parts for the Water Heater except the
500ml flask.
#803 Hydraulic Press Demonstration.
The transmission and multiplication of forces through a hydraulic system
can be observed in this glass model. The force piston has a handle
and a concave top for holding weights. Instructions provided.
HYDROMETERS
#804-1 Hydrometers, Heavy Liquids, 1.0--2.0 in .01divisions,
overall length 30cm.
#804-2 Hydrometers, Light Liquids, 0.7-1.0 in .01 divisions, overall
length 30cm.
#804-3 Hydrometers, Universal, 0.7-2.0 in .01 divisions, overall length
38cm.
HYDROMETER JARS
#804-4 Hydrometer Jar 38 mm OD x 254 mm H
#804-5 Hydrometer Jar 50 mm OD x 305 mm H
MANOMETER
#1298 Manometer, Lecture Table.
This manometer consists of a glass U-tube, open at one end and fastened
to a 15 x 58.5 cm hardwood backboard held upright by a metal support base.
The large size makes this Manometer easily viewed in a classroom.
Instructions included.
#1298-1 Manometer, 50 cm, glass parts only
#1299 Manometer, Vacuum and Pressure Gauge.
This unit is used to measure vacuum and pressure by means of displacement.
A manometer tube with arms one meter long are mounted on a wooden support
with a cast iron base. The glass tube is open on both ends.
Instructions provided. Oil can be substituted for mercury.
#1299-1 Manometer, Vacuum and Pressure Gauge, glass parts only
#1300 Manometer, Complete, 25 x 50 cm.
This unequal manometer tube has two glass arms, 25cm and 50cm.
The longer arm has a funnel at it's top. The shorter arm has
a connector for tubing. Mounted on wood base with iron support stand.
Instructions included.
#1300-1 Manometer, 25 x 50 cm, glass parts only
MAGDEBURG HEMISPHERES
#805 Magdeburg Hemisphere. Made from rubber 3-1/4" diameter (set
2) With instructions.
#806 Magdeburg Hemisphere, Cast Iron.
Machined from cast iron, this is an excellent replica of the traditional
Magdeburg Hemisphere. One of the hemispheres contains a mounted brass
valve for withdrawing and sealing a vacuum. Instructions provided.
#810 "Miniature Magdeburg Hemisphere.
This is a fine quality but less expensive version of the popular vacuum
demonstration apparatus. Air is forced from the disk after being
placed face to face. The disks are then very difficult to pull apart,
showing the strength of air pressure. 2.5"" in diameter. Instructions
provided.
#1401 Neon Wand.
The neon gas glows with brilliance when the tube is held in or passed
through a high frequency or high voltage field. Instructions provided.
OSMOSIS APPARATUS
#1501-3 Osmosis, Single Thistle Tube with Membrane
#1501-4 Osmosis, Double Thistle Tube with Membrane
#1501-5 Osmosis Membrane, Only
#1501-6 Osmosis Apparatus, Bladder Form with Glass Tube
A glass tube 45cm long with a membrane is attached to one end.
When the membrane is filled with sugar soluti9on and imersed in water,
the liquid in the tube wil rise, showing osmotic pressure in a clear demonstration
Instructions included.
#1501-7 Osmosis Apparatus, Double Thistle Tube Type with Jar and
Support.
A double thistle tube with a porous membrane is held upright with the
membrane covered end in a jar of water. When a sugar solution is
added at the top of the tube, the liquid will rise in the tube. Includes
battery jar, thistle tube with membrane and support. Instructions provided.
#1501-7-C Osmosis Apparatus, clamp only.
Used to hold a membrane covered thistle tube in battery jar.
#1502 Overflow Can.
Seamless aluminum can with pour spout. Useful in displacement
experiments.
#1503 Catch Bucket, Size 3" Diameter x 3" High.
Seamless aluminum bucket with handle which is used in displacement
experiments.
#1504 Overflow Can & Catch Bucket Set
#1505 Archimedes's Principle Bucket and Cylinder.
This all metal unit demonstrates the principles of buoyancy and displacement.
The cylinder fits into the cup exactly. The whole unit can be hung
from a spring scale and weighed. This unit can then be lowered into
a container of water and the reduction weight noted. Experiments
prove that the weight loss equals the weight of the water displaced. Instructions
included
#1506 Archimedes's Apparatus.
Demonstrates buoyancy and displacement in a way that makes it easy
for students to visualize and understand. This set consists of a
cylinder with a closely fitted matching plug. The assembled unit
is weighted using the large spring scale. The unit is lowered into
water and the weight reduction noted. The displaced water is poured
into the cylinder to prove that the water's weigt equals the displaced
weight. Comes with cylinder and plug assembly, overflow reservoir,
and large spring scale. The support stand is not included.
Instructions provided.
#1600 Pascal Vase, Glass Parts Only
#1600-1 Pascal Vase, Complete with Support Stand.
Three different shaped vessels with bottom openings of equal diameter
are provided. Water is poured into the vessel and at the point of
equilibrium the disc falls off. The depth of water will be the same
regardless of the shape. Instructions included.
#1602 Pressures Syringe.
Demonstrates that pressure is transmitted uniformly in all directions.
Unit consists of 2" diameter glass bulb and plunger. The bulb has a series
of holes in a plane. When pressure is applied to the plunger water
is expelled at an equal distance in all directions. Instructions
included.
#1873 Steam Generator.
A useful accessory for many experiments involving thermal energy. Constructed
of a heavy gauge aluminum. Consists of a boiler, sample cup, tripod
and two rubber stoppers with and without hole. The boiler is
100mm diameter x 170mm height, the stand measures 240mm in height.
#2001 Tantalus Cup, Intermittent Siphon Demonstration.
Consists of a glass cup and base with U-tube. Siphon action is
initiated by pouring water into the cup to a level above the tube.
Water flows from the cup until the level drops below the tube. Instructions
included.
VACUUM PLATES
#203-4 Vacuum Plate, 9" Outside Diameter.
The 1/2" thick vacuum plate was designed to fit any jar 8-1/2" O.D.
or smaller. A rubber gasket is also included.
#203-5 Vacuum Plate, Replacement Gasket
#203-6 Vacuum Container with Integrated Pump.
This self contained unit includes a transparent plastic dome, manometer,
release valve and vacuum pump. Instructions included.
#203-6-D Vacuum Contain Dome Only - Replacement Part
Hand Vacuum Pump
Supplied with or without a pressure gauge that reads in both centimeters
& inches of mercury. Pumping rate is 15ml per stroke, fitted
with a valve to release vacuum without disconnecting the pump.
#206-2 Vacuum Pump, without gauge.
#206-1 Vacuum Pump, with gauge
#2201 Venturi Tube.
A glass tube 7"" long and 3/4"" in diameter with a constriction
at the center, and three vertical tubes. When manometers are attached
to the three openings the lower pressure at the constriction becomes evident.
A verification of Bernoulli's principle. Instructions included.
#1821 Viscosity Tube Demonstration Apparatus.
The viscosity of four different liquids can be visually compared.
Each tube contains different weight fluid and a 3/8" plated steel ball.
The balls are lifted just above the line on the tube with a magnet and
then released. Students compare the time it takes for the balls to
fall. Liquids not included. Instructions provided.
#1821-A Viscosity Tube - Liquids - set of 3 various weight oils
#2301 Water Trap, without side arms
#2304 Water Trap, with side arms