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عرض 1786–1800 من أصل 2205 نتائج
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Respirometer, Ganong’s
To measure gas evolved or absorbed by living materials or tissue extracts. A respirometer bulb with a small water reservoir at the bottom and hollow ground glass stopper at top in the neck with a hole which can be closed or opened by turning the stopper, a graduated burette opening out of the bulb which connects to a leveling tube via a rubber tubing. Respirometer chamber 50 mm dia, burette 180 x 20 mm graduated 0 to 25 ml and 100 to 75 ml, with special clamp for fixing to a 12 mm dia rod.
SKU: B13368 - Uncategorized
Respiroscope, Simple
Compact unit to compare rates of absorption or evolution of gases by small organisms during respiration. Two stoppered boiling tubes are connected by three way taps at either end of a manometer. One tube holds the organisms and has a syringe for altering level of liquid in the manometer during setting up. The other tube acts as a control thermo – barometer
SKU: B13370 - Uncategorized
RF Telemetry
RF telemetry system consists of a radio frequency transmitter and matching radio frequency receiver both operating at 433 MHz. The system is designed for the radio frequency transmission and reception. The radio frequency transmitter sends out a variable audio signal and the radio frequency receiver with built in loud speaker receives the signal. The system enables the teachers to demonstrate a variety of wave phenomenon. The system also enables the properties of the radio communications to be investigated and compared with those of visible light and other wave motions such as audible sound and water waves etc. For the operation of the system, a 9 V PP3 battery is required.
SKU: PH94020
