This economical vacuum pump features a gauge graduated in both cm³ and inches³. Each depression of the handle displaces 15ml of air.

• Economical vacuum pump
• Gauge in cm³ and inches³
• Maximum vacuum 30mm of Hg
• Pump rate 15ml per stroke
• Clear tubing is 400mm long with 6mm inner diameter
• Eisco type PH0167

This Jolly bulb apparatus consists of a 60mm diameter bulb directly connected to a bourdon pressure gauge.

The apparatus is used for investigation of gas at a constant volume. By inserting the glass bulb into either warm or cold water, the expansion or contraction of the air contained in the bulb can be seen as a pressure change on the gauge.

• 60mm diameter glass bulb
• Gauge calibrated in both kg/cm² and in psi
• Eisco type PH0138C

A simple apparatus for the demonstration of Boyle's law, consisting of an airtight graduated plastic syringe with a lubricated piston, mounted between two wooden blocks.

Weights can be stacked on the top platform, compressing the gas. The corresponding measurement of volume can be read from the syringe scale.

• Air-tight plastic syringe supported between wooden blocks
• Weight on the upper block produces pressure that compresses the gas
• Volume measurements can be read from the syringe scale
• Eisco type PH0145A

An apparatus consisting of a glass flask with holes in the bulbous part and a glass piston that slides in the straight part.

When filled with liquid, the piston is pushed into the apparatus, causing liquid to exit each hole with equal pressure regardless of the hole's position or direction.

• Also known as Pascal's Law syringe
• Eisco type PH0194

An apparatus for demonstrating the principle that water pressure increases with depth.

Liquid will exit from the 3 spouts and travel further horizontally depending on the depth of liquid above them.

• 60mm diameter acrylic pipe
• 400mm total height
• 3 spouts at predetermined heights
• Eisco type PH0196

This basic ripple tank can be used to illustrate important wave motions like rectilinear and circular motion.

The tank consists of a moulded frame with an acrylic window, a ripple generator motor and an illuminator lamp. The apparatus is supported by adjustable legs for levelling the water in the tank. In addition, the unique design and size of this tank allow it to be used in conjunction with an overhead projector.

• Ripple tank 400 x 400mm
• Metal legs
• Ripple generator motor with eccentric cam mounted on PVC bar
• Three supports for illuminator and the motor unit
• Motor hanging clamps
• Springs for motor support
• Lamp unit: halogen 6V
• Hand stroboscope
• Concave Perspex plate
• Convex Perspex plate
• Rectangular Perspex plate
• Curved reflector
• Eisco type PH0767A

Requires a 12V AC/DC power supply for the illumination lamp, plus a variable power supply, not included, or a ripple tank controller, sold separately, to power the ripple generator motor.

A battery-powered controller for the basic ripple tank, 52-3383. The controller regulates the speed of the ripple tank motor, thus changing the frequency of the ripples created.

• Requires 2x AA alkaline batteries
• Eisco type PH0767B

Note: Batteries not included.

This advanced ripple tank from EISCO is supplied complete with all the accessories needed for wave investigations. Each water wave acts similarly to a curved lens. The crest of the wave is seen as a bright region and the trough is seen as a dark region.

Inside the ripple tank is a mechanical vibrator attached to a wave generator that produces either point wavelets or parallel wave fronts. Various obstructions and barriers can be inserted into the path of the wave, such as a single slit, a double slit or an edge.

The tank is intensely illuminated by a strong light source, and synchronized with the wave generator to help students observe the wave patterns on a workgroup table. The frame is made of reinforced plastic and with foam beaches (to negate reflections). The tank includes a mirror, which can be mounted at 45°, to project the ripples onto a translucent screen on one side of the unit.

• Set includes:
• 1x ripple tank
• 1x vibration generator
• 1x wave monitor unit
• 1x projection screen
• 1x wave dipper
• 1x lever arm and support
• 1x projection mirror
• 1x set of footers with adjustment screws
• 1x set of Lucite / Perspex objects
• Eisco type PH0769

The PSU Base Charles' Law apparatus is a simple way of demonstrating that the volume of a fixed mass of gas is proportional to its absolute temperature. Each unit is supplied with an easy to read oil bead and clear measurements ready to use.

• Mercury free
• Dimensions 335 x 40mm
• Capillary tube 0 to 20cm reading
• Thermometer -10°C to +70°C
• Supplied singly

The PSU Base Charles' Law apparatus is a simple way of demonstrating that the volume of a fixed mass of gas is proportional to its absolute temperature. Each unit is supplied with an easy to read oil bead and clear measurements ready to use.

• Classpack of 10
• Mercury free
• Dimensions 335 x 40mm
• Capillary tube 0 to 20cm reading
• Thermometer -10°C to +70°C
• Supplied singly

These packs of round balloons offer great value for money. Ideal for use in the home, in the classroom or for any special occasion.

• Balloon diameter 7in - supplied in various colours
• Supplied in packs of 100

This simple low-cost apparatus provides a means of demonstrating Boyle's law.

• Ideal for demonstrations
• Gives students literally a 'feel' for increase in pressure against volume

Please note that this product is for demonstration purposes and is not 100% accurate.

These glass gas jars have a base and a ground top flange.

• Height 150mm
• Diameter 50mm

These gas jar covers are ground on one side.

• Diameter 65mm
• Supplied in packs of 5

This liquid level apparatus can be used as part of a physics project to show that the level of liquid in connected vessels is constant irrespective of the vessel size or shape. Consists of four different glass vessels connected by a common base tube.

• Size 230 x 100 x 160mm

A rugged hand-operated piston pump with two nozzles - one that creates vacuum and the other that creates pressure.

• Creates pressure or vacuum
• Metal barrel

Build your own models powered by air and water pressure to learn about the laws of physics.

This unique kit allows you to build two different air-and-water-powered systems: water-jet propelled cars and hydro-pneumo (which simply means air pressure and water pressure) powered engines. The hydro-pneumo system uses a self-contained air-and-water turbine system as a motor.

Construct 15 models including a truck, excavator, radar car, tank, antique car, helicopter, motorbike, digger, rocket car, forklift, roadster, propeller plane, grinder and cutting machine. The water-jet propelled cars are a fun outdoor activity, while the self-contained hydro-pneumo powered models are fun both indoors and out. Compete with your friends to see whose water-jet propelled car and hydro-pneumo car goes the fastest!

A 48-page colour instruction book illustrates the step-by-step assembly of each model and related principles so that children learn through playing.

• Build your own models powered by air and water pressure
• Build two different air-and-water-powered systems: water-jet propelled cars and hydro-pneumo
• Construct 15 models including a truck, excavator, radar car, tank, antique car, helicopter, motorbike, digger, rocket car, forklift, roadster, propeller plane, grinder and cutting machine
• Compete with your friends to see whose water-jet propelled car and hydro-pneumo car goes the fastest!
• 48-page colour instruction book
• 165 building pieces