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DISSECTING DISHES, ALUMINIUM (0031)
Made from aluminium sheet. Rectangular, with flanged edges. Sizes available are (bottom length x width x depth) 250x200x60mm & 300x250x75mm in two variants one without wax. and other with wax.
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DISSECTING DISHES, STAINLESS STEEL (0032)
Sizes available are 10x8 inches, 12x8 inches & 10x12 inches in two variants one without wax and other with wax.
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DISSECTING TRAY (0033)
Made of Gl sheet, duly painted, size 250 x 300mm fitted with corners for holding wax. Available with Dissection Tray with wax layered bottom surface & Dissection Tray without wax layered bottom surface.
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SPHYGMOMANOMETER (0034)
For measurement of systolic and diastolic blood pressure of human beings in metabolic rate. Mercury type manometer, manually operated instrument, includes inflatable cuff-arm with Velcro, inflating rubber-bulb bellow with nonreturn air valve having captive air bleed screw, all connected through flexible rubber tubing. Comes in a metal box.
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SIMPLE RESPIROMETER (0035)
For comparing rates of absorption or evolution of gases by small organisms during respiration. The apparatus comprises two stoppered glass boiling tubes connected by three way taps to either limbs of U-shaped graduated manometer. One tube holds the organisms and has a syringe for altering the level of liquid in the manometer during setting up. The other tube acts as a control thermo-barometer. CO2 given off by the respiring organisms is absorbed by potassium hydroxide in the experimental chamber resulting in a change in the level of liquid in the manometer tube. Supplied complete with wire basket for supporting organisms and 1 mL syringe.
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RESPIROMETER, SIMPLIFIED (0036)
This is a simplified form of Ganong's respirometer, with an inverted 'U' tube in place of the respiration chamber. Length 460mm, U-tube diameter 20mm, pipette 1 mL x 0.01 mL
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RESPIRATION APPARATUS (0037)
For inhaled and exhaled air tests. Comprises two 150x 19mm borosilicate test tubes each with stopper and two lengths, one short, and one long, of 5mm glass tubing, connected by PVC tubing and plastic T.
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TRANSPIRATION APPARATUS (0038)
To measure the quantity of water given off by a plant. Consists of a glass vessel 250mmx 50mm (heightxdiameter), with a side tube graduated 0 to 15cm x 1 mm.
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POTOMETER (0039)
To measure transpiration, without breakage. Only one glass component (the capillary tube) and is mounted on a strong backing plate. It consists of a capillary tube with millimeter scale connected via a three way tap to a syringe. The cut shoot is connected to the third outlet. It can also be used to measure humidity by connecting a porous pot to the third outlet. Dimensions overall 155 x 165 x 60mm (width x height x length).
Capillary tube 120 x 1mm (length x bore).
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THODAY'S POTOMETER (0040)
Comprises a horizontal glass tube with one end vertical to take a plant shoot and the other end connected by rubber tubing to narrow bore glass tube with a scale. A vertical limb on the tube is connected to a thistle funnel by rubber tubing fitted with a spring clip. Mounted on a wooden stand to which the plant shoot can be attached for support.
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FARMER'S POTOMETER (0041)
Comprises a narrow bore bent glass tube clipped to a scale 0 to 30cm x 1 mm and fitted by a rubber stopper in a wide mouth bottle. The stopper is also fitted with a dropping funnel and has a hole to take the stem of a plant.
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GANONG'S POTOMETER (0042)
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 millimeters, 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 320 x80mm(L x W), Capillary bore 1mm.
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PHOTOSYNTHESIS APPARATUS (0043)
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 and collected into the second syringe for analysis. The apparatus is mounted on a back-board about 240x100mm, capillary bore 1mm.
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DARWIN'S POTOMETER (0044)
Comprises glass tube with upper end of straight limb closed with rubber stopper, lower end of limb with bored rubber stopper to take length of capillary tubing.
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OSMOSIS APPARATUS (0045)
This apparatus is designed for exploring the phenomena of osmosis and concept of osmotic pressure at elementary levels. Comprises a semi-permeable membrane sealing the open mouth of thistle funnel having an indicator tube, which can be positioned in a reservoir. Supplied complete with dropping pipette.
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