Products

Gas

Air Thermometer Air Thermometer
102

This 2"" bulb is used as an accessory in many heat experiments when studying the expansion of liquids and gases. 
Vacuum Pump Vacuum Pump
206-1 Vacuum Pump, with gauge
206-2 Vacuum Pump, without gauge
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.
Condenser Condenser
302-0-S Condenser, inner tube supported with rubber connection 250mm
302-0 Condenser, inner tube supported without rubber connection 250mm
302-1-S Condenser, inner tube supported with rubber connection 300mm
302-1 Condenser, inner tube supported without rubber connection 300mm
302-2-S Condenser, inner tube supported with rubber connection 400mm
302-2 Condenser, inner tube supported without rubber connection 400mm
302-3-S Condenser, inner tube supported with rubber connection 500mm
302-3 Condenser, inner tube supported without rubber connection 500mm
302-20 Condenser Adapter, Bent
302-21 Condenser Adapter, Straight
Condenser, Leibig Condenser, Leibig
302-8 Condenser, Leibig, Borosilicate 100mm
302-9 Condenser, Leibig, Borosilicate 200mm
302-10 Condenser, Leibig, Borosilicate 300mm
302-11 Condenser, Leibig, Borosilicate 400mm
302-12 Condenser, Leibig, Borosilicate 500mm
Convection Apparatus for Gases Convection Apparatus for Gases
303-1

The enamel coated metal box has a sliding glass front and two glass chimney stacks. Smoke is introduced in one chimney using either smoldering paper or a punk stick. The smoke can be observed traveling down into the box and back out through the other chimney that stands over a flaming candle. The principles of convection currents and wind is made very clear through this demonstration.
Drying Tubes ,Flint Glass Drying Tubes (Flint Glass)
401-1 Straight, with one bulb. . .100 mm
401-2 Straight, with one bulb. . .150 mm
401-3 Straight, with one bulb. . .200 mm
402-1 "U". . .100 mm
402-2 "U". . .150 mm
402-3 "U". . .200 mm
403-1 "U" with side arm. . .100 mm
403-2 "U" with side arm. . .150 mm
403-3 "U" with side arm. . .200 mm
Eudiometer Eudiometer
503-1 50 ml, Subdivisions at 0.1 ml
503-2 100 ml, Subdivisions at 0.2 ml

Gas Measuring Tube
701-1 Gas Measuring Tube,  50 ml
701-2 Gas Measuring Tube,  100 ml
Fermentation Tubes Fermentation Tube
Without graduation, with glass foot
Item # Capacity (ml) Vertical Tube (mm) Height
(mm)
1261-5 5 11 142
1261-10 10 13 160
1261-25 25 18 220
Fermentation Tube
With graduation, with glass foot
Item # Capacity (ml) Vertical Tube (mm) Height
(mm)
1262-5 5 11 142
1262-10 10 13 160
1262-25 25 18 220
Harbottle Apparatus Harbottle Apparatus
791

The Harbottle helps students understand the meaning of fluid pressure and pressure reduction. 
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. 
Quiet Air Source Quiet Air Source
794 

This piece of equipment can be used on any apparatus requiring an air source such as air tables or air tracks. Very quit in operation and comes complete with a 1-1/8" diameter hose. Operates on 110 volt AC.
Magdeburg Hemisphere, Cast Iron Magdeburg Hemisphere, Cast Iron
806 
Machined from cast iron, this is an excellent replica of traditional Magdeburg Hemisphere. One of the hemispheres contains a mounted brass valve for withdrawing and sealing a vacuum.
Miniature Magdeburg¬†Hemisphere, Rubber Miniature Magdeburg  Hemisphere, Rubber
810
An economical version of a classic physics experiment, these miniature Magdeburg Hemispheres are constructed from two matching rubber cups with sturdy chrome-plated steel handles. Although the cup diameter is only 55mm, once they are pressed together, a force of 125N is needed to separate them. Students will find them difficult to pull apart!
Bell Jar with Clear Knob Top Bell Jar with Clear Knob Top
Item # I. D. (mm)  Height (mm)
1371-120 120  180
1371-150 150 200
1371-180 180 250
1371-200 200 300
1371-250 250 400
Venturi Tube Venturi Tube
2201

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.  
Bell in Jar Electric Bell in Vacuum Jar
S406-C
Nature, of course, abhors a vacuum - and sound waves won't travel through one. Prove it with a ringing bell inside a sealed glass jar. As air is gradually pumped out of the jar, the bell becomes faint, then dies. Includes jar, vacuum plate with valve, rubber seal, bell system, and instructions. You need a vacuum pump and two AA batteries (not included). Bell may be removed for other vacuum experiments. The inside height is 8", and the diameter is 8". Includes bell jar, electric bell, base plate with seal, and instructions.
Grades 6-12.
Hand Pump Hand Pump
S632-1

This heavy duty hand pump is a combination of a pressure pump and a vacuum pump, specifically designed for physics labs to evacuate small amounts of air. Made of seamless metal pipe with a hardwood handle.
14x4x1.25", 13oz.
Gas Generating Bottle Gas Generating Bottle
SA-01

These gas generating bottles come complete with flint glass bottle, thistle tube, stopper and flint tube bent at 90 degree angle.
GLS-00101
For preparing gases such as hydrogen, carbon dioxide etc. in a convenient manner.
Includes a flint glass bottle 250mL capacity, thistle funnel, a bent glass (made of borosilicate glass) and a rubber stopper.
Venturi Tube Venturi Tube
2201

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.
Steam Generator Water Trap for Steam Generator
2301

Designed for use with a steam generator or boiler to trap condensed steam. The unit is made of Pyrex glass and is 15.5 cm long.