Breckland Scientific 2023 Catalogue

Tubes

Tubes

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1 GAS DIFFUSION TUBE BOROSILICATE GLASS An open-ended, 500 mm long borosilicate glass tube, ideal for the ‘diffusion of gases experiment’. Cotton wool soaked in concentrated ammonia solution is placed in one end of the tube and cotton wool with concentrated hydrochloric acid is placed in the other end. Both ends are stoppered with bungs, to contain the fumes. The gases diffuse along the tube from both ends, and where they meet a white ring of ammonium chloride forms. Tube ends have been fired (smoothed), for safety purposes. Supplied without stoppers (33 mm or 35 mm solid stoppers required). Cat No. Description Length O.D. Wall Price Per TUG-200-050 Diffusion Tube 500mm 40mm 2.3mm 24.34 ea. COMBUSTION TUBES ‘Test tube’ type borosilicate glass combustion tubes, with a small hole at the bottom. Cat No. Description Length Dia. Price Per 2 COM-100-100 Combustion Tube 125mm 16mm 3.15 ea. 3 COM-100-150 Combustion Tube 150mm 25mm 4.13 ea. 4 COMBUSTION TUBES - DUAL DIAMETER Borosilicate glass combustion tubes, with a smaller diameter section at the bottom. Larger section 125 mm long x 16 mm dia.; smaller section 25 mm long x 6 mm dia. Cat No. Description Price Per COM-150-100 Dual Diameter Combustion Tube 4.28 ea. 5 COMBUSTION TUBE - PURE SILICA Fused quartz glass tube, open at each end, 200mm long x 10mm outer diameter with 1mm thick walls. Only starts to soften above 1600°C, making it ideal for use in oxidising copper to determine % oxygen in air. Cat No. Description Price Per COM-220-100 Combustion Tube - Pure Silica 17.15 ea.

Rubber stopper

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Glass tube

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Ring of NH 4 Cl forms

Cotton wool with conc. HCl

Cotton wool with conc. Ammonia

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Gas Diffusion Tube

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Combustion Tube

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6 DELIVERY TUBES- GLASS Glass, 6mm O.D. Cat No. Description

Pure Silica Combustion Tube Tube

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TUB-100-100 Delivery Tube 90° Bend

8.78 5pk

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TUB-100-150 Delivery Tube Set 6 various Angles

9.45 6pk

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7 SPECIMEN TUBES Flat bottom with polythene stoppers. Glass wall thickness: 0.85mm. Quantity per pack: 100. Cat No. Description Length Dia. Price Per TUB-150-200 Specimen Tube 50mm 25mm 37.20 100pk TUB-150-250 Specimen Tube 75mm 25mm 41.44 100pk

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Delivery Tube - 90˚ Bend

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Related Products... See also ABSORPTION TUBES

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Specimen Tubes

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www.brecklandscientific.co.uk T: 01785 227227 | sales@brec landscientific.co.uk | F: 01785 227444