A range of knife switches mounted on plastic bases, suitable for use in electricity circuits. 
Single Pole, Single Throw.
The poles and blades are made of brass to ensure good electrical connections.

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A range of knife switches mounted on plastic bases, suitable for use in electricity circuits. 
Double pole, Double throw.
The poles and blades are made of brass to ensure good electrical connections.

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Standard 5mm LEDs available in a range of colours.
Pack of 100.

Technical Specifications :
Colour: White
IF: 30
Wavelength (nm): x: 0.31, y: 0.30
Lum. int. (mcd): 10
VF: 3.3
VF: 3.8

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A wooden holder to take lenses or mirrors up to 76mm diameter. 
Material: Wood
Comprising an upright 100mm high with V-shape slot to hold a convex or concave lens, mounted on a rectangular base 100 x 50mm. 
An index mark is engraved on each end of the base.

Material: Plastic
Color: Black
Plastic lens holder suitable to house lenses up to 50mm.
Mounted on base. 
Used in conjunction with Light & Optics experiments. 
Simple locking ring holds lens firmly in position.
Pack of 5.

Designed as a kit for eight pupils consisting of five plywood beams 600 x 44 x 3mm graduated every 38mm.
Each has a groove across its centre to locate the fulcrum point. 
Masses of the blanks are matched to ±1%. 
Also included are four fulcrums 32 x 32 x 64mm and forty 25mm square metal blanks.

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The extensive experiment system Solar-Bio Energy Ready-to-go enables you to reconstruct and understand the whole biomass cycle without any additional equipment. 
A cultivation box and hydroculture allow the observation of the sprouting and growth of plants. 
Different experiments then show the aerobic as well as the anaerobic degradation of the biomass in a compost or biogas processes. 
Thereby the water and nutrient consumption can be analyzed in the different growth phases. 
Thus allows the exploration of the energetic use of biomass.

Experiments :
Germination of plant seeds
Aerobic degradation of biomass in a compost
Anaerobic degradation of biomass to form hydrogen
Anaerobic degradation of biomass to form methane
Plant growth in a hydroculture
Consumption of water and nutrients

Technical Specifications :
Components :
1x Motor module without gear
1x PEM-Fuel cell module
1x Solar-Base unit small
2x expanded clay pebbles
1x fertilizer
1x compost catalyst
1x ID tags
1x Aluminum case 1710 silver
1x aluminum case 1710 blue
2x pot holder Bio Energy
1x Propeller
1,5x silicone tube 4mm
1x Y-switch 4mm
2x plant light
1x hose clamp
1x Test lead black 25 cm
1x composter
1x gas collecting container
1x burner
1x tripod plant lighting
1x sprout box
1x box 6 L
1x tripod
1x seed set
1x rubber plug with tube
1x Test lead red 25 cm
2x Short-circuit plug
1x Erlenmeyer flask 1000 ml
2x timer
1x air pump
2x aeration stone
50x net cup planter
1x ec meter
1x temperature logger
1x weight
1x tweezers
24x stopper red
1x nebulizer
2x plastic box Gratnells 75 mm deep
1x Insert Bio Energy Rtg
2x Info sheet initial startup
1x Layout diagram Bio Energy Ready-to-go

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The entire process of producing biofuels can be demonstrated with Solar-Bio Fuel Large.
Solar-Bio Fuel Large does not only cover the topic of the production of bioethanol, but also the production of biodiesel through transesterification of fats.
It starts with the biological step of alcoholic fermentation.
Afterwards the produced mash will be distilled with the help of the Solar-condenser, which was developed just for this experiment. 
The last step demonstrates the conversion of the produced biofuel into usable energy, such as electrical energy, using the provided Ethanol-fuel cell.

Technical Specifications :
Components :
1 x Potentiometer module
1 x Motor module without gear
1 x Solar ethanol fuel cell module
1 x Plug with hose
1 x Yeast
1 x Box
1 x Yellow propeller
1 x Laboratory thermometer
1 x Distilling head, 2 cores 75°, NS 19/26
1 x Condenser
1 x Alcoholmeter
1 x Erlenmeyer flask 1000 ml
1 x Airlock
1 x Rubber stopper
1 x Areometer
1 x Beaker 250 ml
3 x Test tubes
1 x Grip stopper
1 x Measuring cylinder 100ml
1 x Syringe 2ml
1 x Silicone ring
1 x Lid for tray
1 x Padding "Bio Fuel-Large"
1 x Solar-CD
1 x Einräumplan Bio Fuel Large
3 x Pasteuer pipette
4 x Bumpon transparent 5,0 mm height X 11,1mm diameter

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