Bottle, Canada Balsam

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.

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.

Catalogue No. 4012000

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.