This high quality stranded PVC-insulated equipment wire is ideal for general interconnection within apparatus. It is suitable for use with crocodile clips EL18500 EL18502. • 7 strand/0.2 mm tinned copper conductor • Overall diameter 1.2 mm • Current rating 2 A • Rating 1 kV rms 1.4 at 70°C • PVC insulation • Supplied on reels of 100 m
This high quality stranded PVC-insulated equipment wire is ideal for general interconnection within apparatus. It is suitable for use with crocodile clips EL18500 EL18502. • 7 strand/0.2 mm tinned copper conductor • Overall diameter 1.2 mm • Current rating 2 A • Rating 1 kV rms 1.4 at 70°C • PVC insulation • Supplied on reels of 100 m
Single core equipment wire consisting of 6 mm diameter solid Copper core with outer PVC sheathing, giving an overall diameter of 1.20 mm. Supplied as 100 reel. 1.8 A rating.
Single core equipment wire consisting of 6 mm diameter solid Copper core with outer PVC sheathing, giving an overall diameter of 1.20 mm. Supplied as 100 reel. 1.8 A rating.
An updated version of the Worcester circuit board kit, using high quality plastic connectors with brass wire inserts to make the connections. Can be used with bench top power supply or batteries (not supplied). Neater and easier to use than the traditional Worcester Circuit Board kits, with no sharp edges. Kit contains: • 1 circuit board • 9 bulb holders • 16 bulbs • 2 push switches • 1 potentiometer • 12 connecting bars • 1 resistor • 1 coil of wire 19 swg • 1 coil of white wire 24 swg • 1 coil steel wire 28 swg • 2 red wires • 2 black wires • 2 crocodile clips • Graphite rods • Steel wool • Teacher's guide • Student activity sheets
Deep insect net with telescopic aluminium handle and high quality mesh which is kind to delicate specimens. Suitable for use at all levels. Size of net: 720 x 300 mm dia. Extendable handle: 500-1000 mm.
For population counts and other measurements in the field. Consists of white plastic coated steel rods 500 mm long with markers at 250 mm which simply bolt together to form quadrat frame. Folds flat when not in use.
The simplest and cheapest way to observe CO2 release! Ideal for individual student use. These respiration chambers can be part-filled with lime water or bicarbonate indicator solution, the organism or material to be tested placed in the top chamber and the carbon dioxide given off or expired can be observed by change in the solution. Observation is easy due to the transparency of the box. The apparatus consists of an external chamber with an internal sample holder which is perforated to allow the exchange of gases. This holder prevents contact between the sample and solution below. Dimensions (Diameter x H): 35 x 75mm.
The broad opening of this soil sampler makes it easier to inspect the soil sample while it is still in the auger. Total length of the sampler is 63 cm long and it yields soil sample of approximately 49 cm in length with diameter of 22 mm. Made from electroplated steel.
For any number of easy instant pH checks on soil or compost in the laboratory or garden. Reads direct from soil or compost without sampling. Includes full instructions on adjusting pH to suit individual plants. pH readings for pH 3.5 to pH 9.0 instantly shown on the meter's display.