General Catalogue Chemistry - BECO Internacional LTDA.

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Illustrating molecule and crystal structures using models makes it easier to impart knowledge of chemical interrelationships. In many cases, it is the only way to teach the structures of molecules and crystal lattices. The molecular building systems are intended for various topic areas in chemistry; thus, they comprise different arrangements of atoms and binding sticks. All models described on this page have the same scale (30 mm = 10 -10 m = 1 Å), so that they can be combined with each other. The atoms are represented using colored plastic centers; the color and the angle of the bond sticks have a great variety. This permits even complicated structures to be accu- 667 754 Molecular model set for biochemical structures With 400 atoms and 400 bond sticks, for assembling peptides, nucleic acids, steroids etc. Set includes detailed instructions. rately reproduced. The molecule models are supplemented by a student's set, which allows the students to practice using the system outside of the classroom. Thus they learn to recognize the typical bond and structured forms of organic chemical molecules. 667 759 DNA model Consisting of 880 atoms, bond sticks, as well as two circular wooden plates and plastic strings for suspending the model in the room. The model shown displays the DNA code for the enzyme lysozyme. It is highly suited for group project work. Described on the enclosed cards is the way in which to assemble the model and the process of transcription. The model is supplied fully separated. 667 750 Students' model set system With 63 atoms and 70 bond sticks. For representing about 150 standard compounds of organic chemistry. Set includes detailed instructions. 667 751 Set of 700 bond sticks Fits molecular sets > 667 750 , > 667 753 and > 667 754 , consisting of 500 green bond sticks and 200 red bond sticks, each 30 mm long. 667 753 illustrative media Molecular model sets Molecular model set for inorganic and organic chemistry With 540 atoms and 400 bond sticks. For assembling organic and inorganic structures up to carbohydrates or polymers. Set includes detailed instructions. LEYBOLD DIDACTIC · GENERAL CATALOGUE CHEMISTRY 135
illustrative media Orbital models Orbital model set 136 LEYBOLD DIDACTIC · GENERAL CATALOGUE CHEMISTRY Orbital model of ethene 667 641 The orbital model set enables the ground states of the carbon atom, its hybridization, double bond, triple bond, protonation and other interesting reaction mechanisms to be explained in an easily understandable manner. The storage box includes a description. Dimensions: 325 x 220 x 55 mm Weight: 2020 g 667 642 Fullerene-C-60 In addition to graphite and diamond, a further form of carbon has been discovered in recent years: the fullerene family. The most important representative of this family is the C-60 molecule. This model is fully assembled and made of 100% plastic. Diameter: approx. 140 mm Weight: 44 g
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General Catalogue Chemistry
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® Firmly focused on customer satis
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Getting in touch with us… iv LEYB
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Have a question? Feel free to call
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ecology Ecology Leybold-Didactic pr
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ecology All-purpose hand-held instr
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ecology 666 225 Hand-held photomete
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ecology 666 231 Sound level meter F
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ecology Environmental testing 666 3
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ecology 666 327 666 328 668 311 Eva
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ecology Air pollution and waste gas
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ecology Meteorology With the new ra
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ecology 667 917 667 922 Digital fie
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ecology Manuals Ecology 668 332 The
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electrochemistry Demonstration 664
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electrochemistry Practical experime
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electrochemistry Conductivity 591 5
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electrochemistry Fused-salt electro
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electrochemistry Equipment list Hyd
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electrochemistry 667 401 PEM fuel c
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electrochemistry Fuel cells and alt
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electrochemistry 666 479 CPS-metal
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electrochemistry Alternative energi
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electrochemistry Electrodes Electro
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electrochemistry Literature Sample
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electrochemistry 667 550 Experiment
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chromatography Thin-film chromatogr
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chromatography HPLC in Education an
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chromatography 665 4801 524 010 Sen
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chromatography Gas chromatography m
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chromatography 665 531 Two-column g
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chromatography Peak assignment and
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photometry Spectrophotometer 667 34
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667 349 photometry Determination of
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analysis methods Optical activity M
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analysis methods Viscosity 64 LEYBO
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analysis methods Electrophoresis Th
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analysis methods Calorimetry Determ
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analysis methods 667 325 Calorimete
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analysis methods CPS experiment ass
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analysis methods Butane gas analysi
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chemical engineering/applied chemis
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chemical engineering NEW Extraction
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chemical engineering/applied chemis
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chemistry panel system Basic assemb
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Page 131 and 132: special topics 667 199 Dialysis tub
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measuring equipment - electricity 5
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measuring equipment - recorders Cha
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measuring equipment - pulses, frequ
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measuring equipment - temperature 6
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measuring equipment - temperature T
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measuring equipment- pH pH meters a
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measuring equipment- pH Inserting t
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measuring equipment - conductivity
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energy supply Batteries, accumulato
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energy supply Variable extra-low vo
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energy supply 52129 Three-phase ext
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energy supply 521 50 AC/DC power su
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energy supply 210 LEYBOLD DIDACTIC
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auxiliary equipment · electricity
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stand material Stand bases 300 01 S
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stand material Stand rods Stand rod
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stand material Stands Bunsen burner
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heaters and stirrers Burners and ac
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heaters and stirrers Electrical hea
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heaters and stirrers 303 25 Safety
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heaters and stirrers 666 766 Circul
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heaters and stirrers 666 847 Magnet
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heaters and stirrers Desalinization
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heaters and stirrers 666 861 Hand-d
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Beaker glass, plastic and porcelain
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glass, plastic and porcelain ware G
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Funnel glass, plastic and porcelain
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glass, plastic and porcelain ware D
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Spatula tools / aids Spatulas, twee
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consumables Filter paper Round filt
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consumables Syringes 665 963 665 95
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consumables Test kits Visocolor ®
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safety Safety 661 900 Chemical cabi
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safety 667 614 Heat protective glov
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safety 667 635 Chemical waste dispo
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laboratory gases Compressed gas bot
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Tray storage Equipment boxes, stora
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visual aids 443 15 Base plate with
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sets of chemicals 661 872 Supplemen
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numerical - index Cat. No. Page Cat
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alphabetical - index Article Page A
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✃ order form LEYBOLD DIDACTIC GMB
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