3B Scientific - Physics & Engineering Experiments

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Models for biology teaching
DNA Extraction from Onion
With this easy test on the theme of cellular biology and genetics, you can
isolate chromosomal DNA from an onion without a long preparation time,
during a class. Your students will learn thanks to this experiment about
the basic process of DNA extraction. Everything is included in the kit so
that 5 groups can work at the same time. This effective classroom experiment
with a high DNA yield will provide enjoyment for your students.
Contents for 15 experiments:
80 ml extraction buffer, 500 mg protease mix, 15 flat-bottomed tubes,
15 round paper filters, 5 funnels, 15 wooden picks, experiment
instructions (multilingual).
Dimensions: 20.5x20.5x10.5 cm
Weight: 534 g
& D/E/F/S/I/R
1010264
The Plant Cell
magnified 500,000-1,000,000 times
The two-piece model presents the structure of a typical plant cell with cytoplasm
and cell organelles, as viewed from an electron microscope. For better
illustration, all important organelles are raised and displayed in colour, e.g.:
• Cell wall
• Cell membrane
• Nucleus
• Smooth Endoplasmic Reticulum
• Rough Endoplasmic Reticulum
• Ribosomes
• Chloroplasts
• Mitochondria
• Dictyosomes/
Golgi apparatus
20x14x32 cm; 0.8 kg
1000524
Monocular Course Microscope Model 300 (230 V, 50/60 Hz)
The model 300 course microscope meets all the requirements for highquality
biology lessons. It is characterised by its ease of use and its fine
mechanical and optical qualities. It is equipped with an object stage,
4-objective revolver with DIN achromatic objectives featuring 4x, 10x, 40x,
100x magnification and an Abbe condensor.
1003271
Dissecting instruments
This first-rate dissecting set contains top-quality stainless steel instruments
in an attractive vinyl case.
• 1 pair of scissors, pointed, 10 cm
• 1 pair of forceps, pointed, 13 cm
• 1 dissecting needle, 13.5 cm
• 1 scalpel blade holder n° 4
• 5 replacement scalpel blades n° 11
18x8x3 cm, 0,15 kg
1008710
miniDNA 22 Layer Molecular Model
The miniDNA system comprises abstract shaped colour coded
parts to represent the nitrogenous bases, pentagonal sugar and pyramidal
phosphate parts required to make the Double helix model of DNA.
Contents: 11 Thymine (orange), 11 Adenine (blue) 11 Guanine (green),
11 Cytosine (yellow), 44 Deoxyribose (red), 44 Phosphate (purple)
Supplied with assembly instructions and its own stand. Packed in a plastic
box. 44 cm; diam 11 cm
& E
1005297
236 ...going one step further
3B Scientific® Experiments
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