Plants Physiology
Showing 1–16 of 22 results
-
Plants Physiology
Clinostat, Electrical
Catalogue No. 4012450
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 -
-
Plants Physiology
Combination Dark Germination Chamber
Catalogue No. 4012600
For experiments in phototropism with seedlings. Three-chambered case of wood with to accept a variety of shutters. The right-hand chamber has windows in the top and back end, when used with a clear front window, acts as a control chamber. Supplied with opaque shutter, a slot shutter to admit light from one direction only, the clear windows for the control chamber, one orange and one blue filter to show the effect of excluding various parts of the spectrum. Complete with three glass containers for seedlings. Dimensions overall 180 × 530 × 180mm approx. (height × width × depth).
SKU: 4012600 -
-
Plants Physiology
Ganong’s Potometer with Glass Stop-cock
Catalogue No. 4012100/1
Comprises a graduated, narrow bore, horizontal glass measuring tube with a vessel for a plant shoot at one end and having a vertical limb with a stopcock and a funnel fitted by a ground glass joint. Mounted on a wooden stand. For Demonstration, of transpiration rates and rates of water absorption by a cut shoot under various external conditions. A plant shoot is sealed into a stopper which fits the end tube, and the whole apparatus is filled with water, the open end of the capillary tube, which is graduated in millimetres, dipping into a beaker of water. The position of the air bubble may easily be adjusted by opening the glass stopcock to admit water from the central reservoir. The whole apparatus is mounted on a varnished wooden base by spring clips. Comprises a graduate, narrow bore, horizontal glass measuring tubes with a vessel for plant shot at one end and having a vertical limb with a Teflon stopcock and a funnel fitted by a ground glass joint. Height to top of reservoir 170mm, Diameter of reservoir 20mm Length, overall 320mm, Base 320x80mm (L x W), Capillary bore 1mm.
SKU: 4012100/1 -
Plants Physiology
Ganong’s Potometer with PTFE Key Stop-cock
Catalogue No. 4012100/2
Comprises a graduated, narrow bore, horizontal glass measuring tube with a vessel for a plant shoot at one end and having a vertical limb with a stopcock and a funnel fitted by a ground glass joint. Mounted on a wooden stand. For Demonstration, of transpiration rates and rates of water absorption by a cut shoot under various external conditions. A plant shoot is sealed into a stopper which fits the end tube, and the whole apparatus is filled with water, the open end of the capillary tube, which is graduated in millimetres, dipping into a beaker of water. The position of the air bubble may easily be adjusted by opening the glass stopcock to admit water from the central reservoir. The whole apparatus is mounted on a varnished wooden base by spring clips. Comprises a graduate, narrow bore, horizontal glass measuring tubes with a vessel for plant shot at one end and having a vertical limb with a Teflon stopcock and a funnel fitted by a ground glass joint. Height to top of reservoir 170mm, Diameter of reservoir 20mm Length, overall 320mm, Base 320x80mm (L x W), Capillary bore 1mm.
SKU: 4012100/2 -
Plants Physiology
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 -
Plants Physiology
Osmosis Apparatus
Catalogue No. 4012250
This apparatus is designed for exploring the phenomena of osmosis and concept of osmotic pressure at elementary levels. Comprises a semipermeable membrane sealing the open mouth of thistle funnel having an indicator tube, which can be positioned in a reservoir. Supplied complete with dropping pipette.
SKU: 4012250 -
Plants Physiology
Photosynthesis Apparatus
Catalogue No. 4012200
For measuring and analyzing gas evolved by the plants such as Elodea. Comprise two syringes connected to a collecting tube through a 3-way tap. This arrangement enables the gas to be drawn along the capillary tube by one syringe for analysis. The apparatus is mounted on a back board about 240 x 100mm, capillary bore 1 mm.
SKU: 4012200 -
Plants Physiology
Plant Pot Holder
Catalogue No. 4012460
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.
SKU: 4012460
