All Products
DNA model, 22 layers
DNA model, 22 layersThis DNA model makes it easier to study the double helix structure.
The model contains 22 base pairs consisting of:
12 thymine (T) (orange), 11 adenine (A) (blue), 11 guanine (G) (green),11 cytosine (C) (yellow).
DNA model, large, for hanging
DNA model, large, for hangingLarge, attractive DNA model, which can be mounted on a tripod pole or hung from the ceiling.
Shows DNA in double helix with 12 base pairs with correct bond angles
Document Analysis Lab Activity
Document Analysis Lab ActivityDetermine a document’s authenticity.
Doppler Ball
Doppler BallA 100 mm plastic ball with a coin cell battery powered buzzer inside for demonstrations of the Doppler Effect.
Doppler Rocket
Doppler RocketEffectively teaches students the frequency shift concept and its rugged design allows for years of classroom use.
Double dipper
Double dipperDouble Rod Clamp (3 pack)
Double Rod Clamp (3 pack)Clamp holds two rods either parallel or perpendicular to one another.
Double-Length Slinky
Double-Length SlinkyAn excellent tool for demonstrating transverse and longitudinal wave phenomena. It is twice as long as a traditional slinky.
Dr FuelCell fuel cell car, basic
Dr FuelCell fuel cell car, basicThis fuel cell car set contains an electrolysis unit that is reversible and can thus both function as an electrolyzer that generates hydrogen, and which can subsequently function as a fuel cell that generates electricity to drive the electric motor in the car. Also included is a bottle of distilled water , a solar cell and a stopwatch, as well as a manual with various tasks.
Drive belts, set
Drive belts, setSet of 4 flexible drive belts made from black synthetic rubber.The belts measure approx. 240 mm, 390 mm, 580 mm and 780 mm.Oil-resistant.
Driven Damped Cart Oscillations
Driven Damped Cart OscillationsThe oscillator consists of a Smart Cart attached to two springs.
Driven Damped Harmonic Oscillations Experiment
Driven Damped Harmonic Oscillations ExperimentThe complete solution for examining the resonance of a driven damped harmonic oscillator.
Drop Box
Drop BoxMagnetically suspend and release metal objects – ideal for shoot-the-target demos and free fall demos.
Drop Dispenser
Drop DispenserThis Drop Dispenser has a 60 mL reservoir and two stopcocks to facilitate titrations.
Drop Shoot Accessory
Drop Shoot AccessoryClearly demonstrate the independence of x and y motion using this accessory with the PASCO Projectile Launcher (ME-6800).
Drop-Shoot Demo
Drop-Shoot DemoReleasing the spring causes one ball to drop directly down while the other is projected horizontally.
Dropper Popper
Dropper PopperInvert this half rubber ball and drop it. It will bounce up higher than the release point. Discuss conservation of energy with your students.
Drug Testing Model Set
Drug Testing Model SetHands on representation of drug testing models.
Dual Colour Laser
Dual Colour LaserThe Lascells semiconductor laser contains two independently controlled laser diodes, one at the standard 650nm red and a second at 532nm green. Both lasers may be simultaneously passed through a double slit slide and both diffraction patterns may be displayed one above the other for an immediate comparison.