生物

The Telescopic Pond Net is ideal for education and anyone who needs a well constructed good quality pond net. The net head is 240mm wide and the strong, durable net bag is 30cm deep and made from standard (2mm) woven mesh. It has an orange ... 更多

The educational plankton net has an opening diameter of 150mm and mesh size of 53 µm. It is ideal for educational use or for those who require an economical net for trial sampling. The net has an industrial nylon collar which is fitted onto ... 更多

This tube is manufactured from stainless steel and provides an efficient method of extracting a 2.9 cm diameter core from the surface soil. The tube has a cutaway section from which the core can be easily removed and the handle is comfortable ... 更多

12 Microscope Slides 1(d). Sea urchin, unfertilized eggs 2(d). Sea urchin, fertilized eggs 3(d). Sea urchin, two cells 4(d). Sea urchin, four cells 5(d). Sea urchin, eight cells 6(d). Sea urchin, sixteen cells 7(d). Sea urchin, thirty ... 更多

10 Microscope Slides: 1(g). 4-6 mm, t.s. 2(g). 7-9 mm, sagittal l.s. 3(f). 11-12 mm, t.s. through head 4(f). 11-12 mm, t.s. through abdomen 5(f). 15 mm, t.s. through head 6(f). 15 mm, t.s. through thorax 7(f). 15 mm, t.s. through abdomen ... 更多

50 Microscope Slides. All our histology slides series are standardly coloured with AZAN: a multi-coloured staining with nuclear red for cell nuclei, connective tissue blue, erythrocytes orange and keratinized tissue red. The microscope ... 更多

50 Microscope Slides 1(d). Stem apex and meristematic tissue, Asparagus l.s. 2(c). Aleurone grains, t.s. of Ricinus endosperm 3(d). Fat in sec. through endosperm of Corylus 4(c). Lysigenous oil glands, t.s. rind of Citrus fruit 5(d). Inulin ... 更多

13 Microscope Slides 1(d). Protostele. Psilotum, stem t.s. 2(d). Actinostele. Lycopodium, stem t.s. 3(d). Polystele. Pteridium, rhizome t.s. concentric bundles with inner xylem 4(d). Ectophloic siphonostele. Osmunda, rhizome t.s. 5(d ... 更多

显微照片、图表、说明、测试方案和教学材料。含约570张图片和2,835个文本。 更多