8
TEST TUBES
S
ODA
G
LASS
TEST TUBES SODAGLASS
SAMCO soda glass test tubes are suitable for
general mixing and simple laboratorywork, and
will withstandmoderatewarming (eg in awater
bath). They should not be placed directly into
naked flames.
Tolerances are as specified in ISO4142:2002 (Table 4).
Test Tubes
Light wall with rim
Code
Size
Wall thickness Quantity
mm
mm
per pack
G001/71
50 x 6.5
*
0.45
250
G001/72
50 x 10
*
0.6
250
G001/73
75 x 10 0.6
100
G001/75
75 x 12 0.6
100
G001/76
100 x 12 0.6
100
G001/79
100 x 16 0.6
100
G001/80
125 x 16 0.6
100
G001/81
150 x 16 0.6
100
G001/82
125 x 18
*
0.6
100
G001/83
150 x 18 0.6
100
G001/84
150 x 24 0.8
50
Durham Tubes
*
Code
Size
Wall thickness Quantity
mm
mm
per pack
G010/21
25 x 6.5 0.65
250
G010/22
30 x 6.5 0.65
250
G010/23
35 x 8
0.65
250
G010/24
50 x 7.5 0.65
250
*Supplementary sizes to ISO4142
Physical Properties
Composition
Coefficient of expansion 91 x 10
-7
SiO
2
69
(20-300°C)
AI
2
O
3
4
Density
2.5 B
2
O
3
1
Softening point
720°C CaO 5
Annealing point
530°C BaO 2
Working point
1040°C Na
2
O 13
MgO 3
K
2
O 3
Test Tubes
Mediumwall rimless bacteriological quality
Code
Size
Wall thickness Quantity
mm
mm
per pack
G002/71
50 x 6.5
*
0.65
250
G002/72
50 x 10
*
1.0
250
G002/73
75 x 10 1.0
100
G002/74
90 x 10
*
1.0
100
G002/75
50 x 12
*
1.0
100
G002/76
75 x 12 1.0
100
G002/77
100 x 12 1.0
100
G002/86
75 x 16
*
1.0
100
G002/80
100 x 16 1.0
100
G002/81
125 x 16 1.0
100
G002/82
150 x 16 1.0
100
G002/83
125 x 18
*
1.0
100
G002/84
150 x 18 1.0
100
G002/85
150 x 24 1.2
50
