Breckland Scientific 2021 Catalogue

Tubes

Tubes

a

1

Rubber stopper

Glass tube

1 GAS DIFFUSION TUBE BOROSILICATE GLASS An open-ended 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. Ends fired for safety. Supplied without stoppers. Cat No. Description Length O.D. Wall Price Per TUG-200-050 Diffusion Tube 500mm 40mm 2.3mm 17.25 ea. COMBUSTION TUBES Glass with small hole at the bottom. Cat No. Description Length Dia. Price Per 2 COM-100-100 Combustion Tube 125mm 16mm 2.68 ea. 3 COM-100-150 Combustion Tube 150mm 25mm 3.04 ea. 4 COMBUSTION TUBES - DUAL DIAMETER Glass with smaller diameter section at the bottom. Larger section 125mm x 16mm dia., smaller section 25 x 6mm dia. Cat No. Description Price Per COM-150-100 Dual Diameter Combustion Tube 3.89 ea. 5 COMBUSTION TUBE - PURE SILICA Fused quartz glass tube open at each end, 200 x 10mm with 1mm walls. Softens 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 10.72 ea. DELIVERY TUBES - POLYPROPYLENE Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use - ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments in schools and universities. Size: 6mm O.D., 4mm I.D. Cat No. Description Price Per 6 TUB-050-100 Delivery Tube - 90 Degree 20.19 5 7 TUB-050-150 Delivery Tube - Bung Top 20.19 5 8 TUB-050-250 Delivery Tube - Straight Tube 18.29 5 9 TUB-050-300 Delivery Tube - Double Bend 21.74 5 10 TUB-050-350 Delivery Tube - Medium U Bend 20.19 5 11 TUB-050-400 Delivery Tube - Large U Bend 22.97 5 12 TUB-050-450 Delivery Tube - Small U Bend 21.71 5 13 TUB-050-500 Delivery Tube - Test Tube Side Arm 23.23 5

b

c

Ring of NH 4 Cl forms

Cotton wool with conc. HCl

Cotton wool with conc. Ammonia

Gas Diffusion Tube

d

e

f

3

2

4

g

Combustion Tube

h

5

i

j

Pure Silica Combustion Tube Tube

7

k

6

l

8

m

9

n

13

o

10

12

p

q

11

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

Price Per

Delivery Tubes - Polypropylene

TUB-100-100 Delivery Tube 90° Bend

7.98 5

r

TUB-100-150 Delivery Tube Set 6 various Angles

8.45 set

14

15

s

15 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 29.95 100 TUB-150-250 Specimen Tube 75mm 25mm 32.24 100

t

v

Related Products... For absorption tubes see page 61

Specimen Tubes

Delivery Tube - 90˚ Bend

w

470

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