Frederiksen
Showing 31–45 of 638 results
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Physics
Battery box for microphones
The battery box functions as a voltage supply for microphones and various sensors when used with equipment that does not provide a voltage for this purpose.Typical examples are connection of a microphone (248600 or 251570) to an oscilloscope or an AC voltmeter.
SKU: FR-251560 -
Miscellaneous
Battery tester
A universal battery tester is a small and handy device used to quickly check whether a battery still has power. This model can test both 1.5 V batteries, which are typically used in remote controls, flashlights and laboratory equipment, and 9 V batteries, which are often used in devices with higher power consumption. The battery tester’s simple design makes it easy to use, and the reading gives a clear picture of the battery’s current condition.
SKU: FR-352445 -
Biology
Blood Circulation, relief model
Relief model in 1/2 natural size. Provides a schematic representation of the blood vessel system with arteries and veins and the blood supply to the various organs. The heart is seen opened. The skeleton and the blood supply to the individual joints are shown.
SKU: FR-773530 -
Biology
Blood typing kit AB0-Rh, simulated blood
This complete classroom set for 30 analyses allows students to work with the AB0 and Rhesus systems without the use of real blood. Blood typing is carried out safely and simply with simulated blood and simulated sera – Anti-A, Anti-B and Anti-Rh – which are added to small plastic trays with three compartments. The coagulation reactions can be clearly observed visually.
SKU: FR-780080 -
Physics
Boyle-Mariotte apparatus
For demonstrating the relationship between volume and pressure at constant temperature.The apparatus consists of a graduated cylinder with a piston.The cylinder is connected to a manometer by a narrow channel, to allow the pressure to be read.The cylinder is fitted with a screw valve.
SKU: FR-180500
