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"Dispensers"

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Determination of the Nitrite and Nitrate Concentration in Water Kit

Item Number:  (470219-152)
Determination of the Nitrite and Nitrate Concentration in Water Kit, Includes: 60 mL Griess Reagent, 0.5 g Cadmium Metal Powder, 6 Plastic Pipettes, 3 Reaction Vessel, 3 Collection Bottle, 1 Measuring Tube, Size: 40 tests

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Determining the Composition of an Unknown Mixture

Item Number:  (470136-722)

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Determining the adiabatic exponent

Item Number:  (470220-092)
Determining the adiabatic exponent cp/cV of air after R'uchardt Determining the adiabatic exponent cp/cV of air after R'uchardt Determining the adiabatic exponent cp/cV of air after R'uchardt

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Determining the electric unit charge

Item Number:  (470220-110)
Determining the electric unit charge after Millikan and verifying the charge quantification - Measuring the suspension voltage and the falling speed

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Determining the gravitational constant

Item Number:  (470220-084)
Determining the gravitational constant, with the gravitation torsion balance after Cavendish- Measuring the excursion with a light pointer, Required but not included: Laser light pointer

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Determining the transition temperature of a high-temperature superconductor

Item Number:  (470220-134)
Solid State Physics – Superconductivity

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Determining the velocity of sound in air as a function of the temperature

Item Number:  (470220-096)
Acoustics – Wavelength and Velocity of Sound

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Developing a Science Fair Project Bulletin Board Set

Item Number:  (470107-178)

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Diagnosing diabetes single K unassembled 10 pack

Item Number:  (470017-792)

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Diagnosing diabetes single K unassembled 10 pack refill

Item Number:  (470017-854)

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Diagnosing diabetes single kit, English

Item Number:  (470017-752)

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Dialysis Tubing Closure, 50mm

Item Number:  (470206-374)

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Diaphragm

Item Number:  (470163-768)
Diaphragm with 3 Double Slits of Different Widths, Photographic diffraction objects in a slide frame. Dimensions: 50x50 mm2, Slit width [mm]: 0.10; 0.15; 0.20, Slit spacing [mm]: 0.30, No. of slits: 2

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Diaphragm

Item Number:  (470163-762)
Diaphragm with 4 Double Slits of Different Spacings, Photographic diffraction objects in a slide frame, Dimensions: 50x50 mm2, Slit width [mm]: 0.15, Slit spacing [mm]: 0.25; 0.50; 0.75; 1.00, No. of slits: 2

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Diatoms Of North America

Item Number:  (470022-604)

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Dice, Dot, 5/8", 18 Pair (36 die), in 3 Colors

Item Number:  (470046-070)

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Dichotomous Key Kit

Item Number:  (470102-506)

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Dictionary of Geological Terms

Item Number:  (470022-530)

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Die, Dot, Rubber, 1 3/4", 1 Pair, 2 Die, Yellow

Item Number:  (470046-114)

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Die-Cast Bus

Item Number:  (470218-648)
Die-Cast Bus, pullback, A pull back motor and die cast body, Scale: 1:64, 5 inches long, Not for children under 3 yrs.

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Differential Model

Item Number:  (470157-238)
Differential Model, permits the instructor and student to manually turn the handle and apply a load to the transparent wheels to demonstrate the differential mechanism, permits power from the engine to be transmitted to a pair of driving wheels.

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Differential and Sympathetic Tuning Forks

Item Number:  (470148-808)

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Diffraction Apparatus

Item Number:  (470112-972)
Diffraction Apparatus, Used to map light intensity versus position for many-slit geometries, Slits are made by depositing metal film on glass, creating extraordinarily clean slits with fully opaque blocking areas.

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Diffraction Grating

Item Number:  (470158-406)
Diffraction Grating, protected by two glass plates, 60 mm x 45 mm 300lines/mm Viewing area measures approx 0. 45mm x 30mm

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Diffraction Grating Glasses

Item Number:  (470015-970)

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Diffraction Grating Slide

Item Number:  (470006-578)

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Diffraction interference resolution kit, complete kit

Item Number:  (470014-454)

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Diffraction of electrons at a polycrystalline lattice (Debye-Scherrer diffraction)

Item Number:  (470220-112)
Debye–Scherrer Diffraction

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Digital Gauss Meter

Item Number:  (470164-000)

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Digital Millikan Apparatus, 110V

Item Number:  (470121-482)

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Digital Solar Power Meter

Item Number:  (470018-066)

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Digital Sound Level Meter

Item Number:  (470110-358)

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