Frederiksen
Rapitest soil test kit pH-NPK
Rapitest soil test kit pH-NPKSimple soil test set with coarse scale for examining soil pH as well as the content of nitrogen (nitrate), phosphate and potassium.
Refractometer, salinity
Refractometer, salinityThis saltwater refractometer is a high-quality instrument specially designed for accurate measurement of salt concentration in seawater.
Renewable energy kit
Renewable energy kitComplete energy kit to study the production of different renewable energy sources.
Resistor holder
Resistor holderUp to four resistors (or other components) can be mounted in terminal blocks, which are individually connected to safety terminals. Used when unmounted components are to be included in a circuit with conventional safety cables.
Resistors on base, 20, 50, 100, 150 Ohm
Resistors on base, 20, 50, 100, 150 OhmFour precision resistors mounted with safety bushings. The resistors can be combined in series and parallel connection with ordinary safety wires in countless ways.
Retort stand base, A-shaped, 2.0 kg
Retort stand base, A-shaped, 2.0 kgA-shaped base, 2.0 kg
RNA model
RNA modelThis RNA model makes it easier to study the structure. The model contains 12 bases: 3 thymine (T), 3 adenine (A), 3 guanine (G) and 3 cytosine (C) in their respective colors. The side chains consist of deoxyribose (red) and phosphate (purple), which can also be separated.
Rocket car
Rocket car
Rod with sleeve
Rod with sleeveFor mounting timer 200500. Painted sleeve with stainless steel Ø 10 mm rod.
Rotatable mirror with indicator
Rotatable mirror with indicatorRotatable mirror mounted on a base. For use in a refraction vessel for observing the angles of incidence and reflection within a fluorescein solution.
Rotating platform
Rotating platformFor demonstrating the conservation of angular momentum. The system consists of a rotating Ø 480 mm platform with a stool. Equipped with 5 legs, ball bearings and levelling screws.
Round electrode, aluminium
Round electrode, aluminiumThis round electrode will fit the electrode holders no. 4515.10 and 4515.20 and electrode connector no. 4513.00.
Round electrode, copper
Round electrode, copperThis round electrode will fit the electrode holders no. 4515.10 and 4515.20 and electrode connector no. 4513.00.
Round electrode, iron
Round electrode, ironThis round electrode will fit the electrode holders no. 4515.10 and 4515.20 and electrode connector no. 4513.00.
Rubbing rod, glass
Rubbing rod, glassFor producing an electrostatic charge by rubbing with fur etc.
Rubbing rod, Plexiglas
Rubbing rod, PlexiglasFor producing an electrostatic charge by rubbing with fur etc.
Rubbing rod, PVC tube
Rubbing rod, PVC tubeFor producing an electrostatic charge by rubbing with fur etc.
