L Shaped Spreader
Catalogue No. 4012270
This sterile, smooth spreader, made of Polystyrene, enables even spreading of liquid samples across the surface of a jar plate without grouping and cutting the medium.
This sterile, smooth spreader, made of Polystyrene, enables even spreading of liquid samples across the surface of a jar plate without grouping and cutting the medium.
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For demonstration of heliotropism and geotropism. Germinating seedlings are pinned to the cork table which is rotated by an electric motor at 5 revolutions per hour, and rated 220-240V, 50-60Hz, 5W. The motor is spindle mounted and may be clamped by a thumbscrew so that the plane of the table can be set at any angle. Slow rotation in the vertical or horizontal planes cancel out the effect of gravity and directional light. A Plastic cover is provided for the cork table to shield the seedlings from draughts. Diameter of cork disc is about 100mm.
SKU: 4012450 -
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An easy replacement to the cork disc in Clinostat. Aluminium cylindrical vessel measuring 87mm and 100mm high, accommodate any Pot shape/size up to 75mm diameter. The plant can be secured in position with plastic bands/cords using the hooks provided on the upper edge, when damp moss or any other suitable material is wrapped around and beneath the pot.
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J Tube, Screw Fitting
Catalogue No. 4012300
Glass J-tube formed from 1mm bore thick walled capillary tube, with a brass screw and collar at the end of the longer limb. Used for sampling small quantities of gas held over water (e.g., in photosynthesis or respiration experiments). A bubble of gas is introduced into the short limb. This is then lowered into reagent solution and the bubble moved back and forth so that reagent diffuses through the end water seal. The change in length of the bubble indicates the amount of gas taken up by the reagent. Use potassium hydroxide for CO2 or alkaline pyrogallol for O2. Dimension: long limb – 250mm and short limb – 100mm.
SKU: 4012300 -
