Frederiksen
Discharge tube, Ø 13 x 100 mm
Discharge tube, Ø 13 x 100 mmNeon lamp Ignition voltage: 90 V Socket: festoon (large)
Distillation set, large
Distillation set, largeGlass construction kit for organic chemistry. The individual parts are with NS 19/26 and NS 24/29 grinding.
Distillation set, semi-micro
Distillation set, semi-microConstruction kit in glass for the construction of apparatus for distillation on a semi-micro scale. The individual parts are with normal grinding NS 14/23.
Distillation set, small
Distillation set, smallGlass construction kit for organic chemistry. The individual parts are with NS 14/23 grind.
DNA Model 50cm
DNA Model 50cmAssembled
As FR-527565, but with 12 base pairs:thymine (t), 6 adenine (A), 6 guanine (G) & 6 cytosine (C).
The side chains consist of dextroribose (red) and phosphate (purple), which can also be separated.
DNA model, 12 layers
DNA model, 12 layersThe model has 12 base pairs: 6 thymine (t), 6 adenine (A), 6 guanine (G) and 6 cytosine (C).
The side chains consist of dextroribose (red) and phosphate (purple), which can also be separated.
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
Double dipper
Double dipper
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.
DualScope
DualScopeRobust low-priced hobby/student microscope with simple optical glass objectives mounted on a revolving nosepiece. It comes with a plastic vertical stage with stage clips and a 6-hole disc condenser.
The eyetube is mounted at a 45 degree angle for comfortable viewing and has a wide-field eyepiece with built-in pointer. In addition to the traditional bottom light the microscope is provided with a top light, and is thus also suited for observation of surfaces of leaves, coins, insects etc.
A simple microscope ideal for hobby use and for smaller children. The simplicity of the design makes it a good choice as an introduction to microscopes or as a supplement to the traditional school microscopes.
Dust cover
Dust coverUnit: Pcs
Dust Cover, large
Dust Cover, largeUnit: Pcs
Dynamometer, 0.1 N, silver
Dynamometer, 0.1 N, silverOur original, precision spring scale dynamometers made from clear acrylic, with the upper section coloured according to the measurement range. The dynamometer can be zeroed.
Dynamometer, 0.2 N, beige
Dynamometer, 0.2 N, beigeOur original, precision spring scale dynamometers made from clear acrylic, with the upper section coloured according to the measurement range. The dynamometer can be zeroed.
Dynamometer, 1 N, yellow
Dynamometer, 1 N, yellowOur original, precision spring scale dynamometers made from clear acrylic, with the upper section coloured according to the measurement range. The dynamometer can be zeroed.
Dynamometer, 10 N, green
Dynamometer, 10 N, greenOur original, precision spring scale dynamometers made from clear acrylic, with the upper section coloured according to the measurement range. The dynamometer can be zeroed.
