Breckland Scientific 2023 Catalogue

Genetics & DNA - GlassWorking Tools

Models

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1 MINIDNA® MOLECULAR MODEL KIT A self-assembly molecular model of either a 12-layer (1 turn) or 22-layer (2 turns) double helix of DNA (deoxyribonucleic acid), with abstract-shaped parts designed to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate components needed to make a double-helix model of DNA. The three hydrogen bonds that connect Cytosine to Guanine and the two that connect Thymine to Adenine are represented by the appropriate number of pegs. The approximate scale is 1cm = 2 Angstroms. The models can be displayed as a helix on the stand (included) or unzipped into a ladder form to demonstrate the process of replication.. Supplied with full instructions. Approximate height when assembled: 24cm (12 layer model) or 44cm (22 layer model). Cat No. Description Price Per MOD-150-100 DNA 12 Layer Kit 23.31 kit MOD-150-150 DNA 22 Layer Kit 40.73 kit

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MiniDNA Molecular Model

Glass Working Tools

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2 GLASS CUTTING DIAMOND Useful tool for scoring glass before breaking/snapping along the scored line. Features a small industrial diamond mounted on a stainless steel swivel head, with brass shank and wooden handle. Cat No. Description Price Per GLA-050-100 Glass Cutting Diamond 20.64 ea. 3 GLASS TUBE CUTTER Tool for gutting glass tubing, by scoring around the tubing with the cutting wheel. Tubing can then be snapped across the scored line by holding closely either side of the score mark and pulling or snapping. Frame made from nickel plated zinc alloy. For tubing up to 30mm diameter. Cat No. Description Price Per GLA-100-100 Glass Tube Cutter 23.54 ea. GLA-100-150 Spare Wheels 5.74 ea. 4 CHINAGRAPH PENCILS Useful for writing on glass, china, acetate and other smooth or shiny surfaces. Cat No. Description Price Per LAB-300-050 Chinagraph Pencil, Black 19.30 12pk

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Glass Cutting Diamond

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Glass Tube Cutter

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Chinagraph Pencil

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