Frederiksen
Mohs Hardness Scale
Mohs Hardness ScaleSmall stone collection with 10 different stones with different hardness according to Mohs classification (hardness 1-10). It is thus possible to determine the hardness of other stones with this stone collection. The box contains: Talc, gypsum, calcite, fluorite, apatite, feldspar (orthoclase), quartz, topaz, corundum and diamond (needle).
Mole demonstration kit
Mole demonstration kitUse this kit to visualize the concepts of mole and amount of substance. Students will develop a greater understanding of the concept of the mole, as well as a greater knowledge of the physical properties of each element.
Molecule Building Kit 001, Organic
Molecule Building Kit 001, OrganicBasic set that allows you to build organic compounds such as hydrocarbons, alcohols, carboxylic acids as well as more complicated ones such as vitamin C, nicotine and camphor.
Molecule Building Kit 003, organic
Molecule Building Kit 003, organicBuilding kits that allow building most organic compounds such as hydrocarbons, alcohols, esters, ketones, aromatic compounds, amino acids, glucose, polymers and many more.
Special C atoms also make it possible to build e.g. ethene, ethyne and benzene as compact models.
Molecule Building Kit 004
Molecule Building Kit 004Organic and inorganic building kit that provides unimaginable possibilities for constructions of organic and inorganic compounds as well as complex ions.
Molecule Building Kit 051, Stereochemistry
Molecule Building Kit 051, StereochemistryOrganic Stereochemistry Student Building Kit. Contains i.a. MOLYDOME hydrogen shells, which create a good combination of skull model and ball model. 2 types of molecular structures can be built:
1) Open and extended models that have a scale ratio of approx. 2.5 cm per angstrom.
2) Dense models that have a scale ratio of approx. 1.25 cm per angstrom
Molecule building kit, BASIC
Molecule building kit, BASICAn affordable molecule building kit containing 54 atoms and 24 bonds.
Molecule building kit, organic, student
Molecule building kit, organic, studentWith this kit many organic compounds can be build.
The kit comprise: 12 H-atoms (1 hole), 6 O-atoms (2 holes), 3 N-atom (3 holes), 6 C-atoms (4 holes), 15 medium connections and 15 long flexible connections.
Supplied in a convenient storage box with a hinged lid.
Molecule construction kit, student
Molecule construction kit, studentWith this kit many compounds – both organic and inorganic – can be build.
Molecule construction set 007, biochemistry
Molecule construction set 007, biochemistryBiochemical construction kit that allows constructions of, among other things, amino acids, peptides, mono-, di- and polysaccharides, nucleic acids, nucleosides, nucleotides, coenzymes and DNA.
Motor for solar cell
Motor for solar cellMotor with propeller on stand, equipped with safety sockets. For use with solar cell 488500, for example.
Motor, low-torque
Motor, low-torqueVery low torque 1.5 V motor on a post, supplied with turbine blades and protective rear plate to protect the blades against breakage.
Motor/generator with winding shaft
Motor/generator with winding shaftThe original Frederiksen universal motor/generator. Sturdy, smooth-running DC motor which can also be used as a generator. Fitted with a dual pulley with cylindrical winding shaft with choice of diameter: Ø 8 / Ø 12 x 12 mm. With a Ø 10 x 35 mm stainless steel support post. Operating voltage: 0-12 V DC. Connects using safety sockets.
Mounting bench, Risø sources
Mounting bench, Risø sourcesComplete mounting bench for Risø sources*) and GM tubes, which provides a stable platform for experiments with radioactivity.
Multichannel analyser
Multichannel analyserA multichannel analyser (MCA) sorts incoming pulses from an energy-sensitive detector into a large number of channels according to size.
Muscles front & back – Poster
Muscles front & back – PosterBeautiful and colorful poster with practical lamination. English text.
Mysterious spinning top
Mysterious spinning topGive this spinning top a spin and watch it spin for hours without stopping.
The secret revealed: the spinning top contains a small magnet. As this magnet moves past the center of the black base, the top’s magnetic field induces a current in a coil, which closes a switch, allowing a battery to instantly activate a small electromagnet. The spinning top increases its speed and spins away from the center of the base.
Nature viewer with 2x and 4x magnif.
Nature viewer with 2x and 4x magnif.Versatile magnifier with two magnifications: 2x and 4x. A grid is printed at the bottom as a reference.
