|
|
|
|
|
|
 |
Tech Notes
| Glass Properties |
| All Chemglass brand glassware meets ASTM specification E438, Type 1, Class A, and is made from Kimble Kimax or Schott Duran glass. Specifications for this glass is as follows: |
| Maximum Short time use temperature |
500°C
|
| Annealing Point |
560°C
|
| Softening Point |
815°C
|
| Working Temperature |
1270°C
|
| Linear Coefficient of Expansion |
32.5 x 10-7 / °C
|
| Refractive Index |
1.473
|
| Round Bottom Flask Diameters |
|
Capacity mL
|
Diameter mm
|
Capacity mL
|
Diameter mm
|
|
5
|
25
|
500
|
102
|
|
10
|
31
|
1000
|
130
|
|
15
|
35
|
2000
|
161
|
|
20
|
38
|
3000
|
185
|
|
25
|
42
|
5000
|
221
|
|
50
|
48
|
6000
|
236
|
|
100
|
60
|
10000
|
279
|
|
125
|
65
|
12000
|
295
|
|
200
|
76
|
22000
|
350
|
|
250
|
83
|
50000
|
457
|
|
300
|
87
|
72000
|
520
|
|
Standard Dimensions for Full-Length Interchangeable Taper-Ground Joints
|
| Joint size Number |
Approximate Diameter at small end mm |
Approximate Length of Ground Zone mm |
Diameter at large End of Ground Zone mm |
| 7/25 |
5 |
25 |
7.5 |
| 10/30 |
7 |
30 |
10.0 |
| 12/30 |
9.5 |
30 |
12.5 |
| 14/35 |
11 |
35 |
14.5 |
| 19/38 |
15 |
38 |
18.8 |
| 24/40 |
20 |
40 |
24.0 |
| 29/42 |
25 |
42 |
29.2 |
| 34/45 |
30 |
45 |
34.5 |
| 40/50 |
35 |
50 |
40.0 |
| 45/50 |
40 |
50 |
45.0 |
| 50/50 |
45 |
50 |
50.0 |
| 55/50 |
50 |
50 |
55.0 |
| 60/50 |
55 |
50 |
60.0 |
| 71/60 |
65 |
60 |
71.0 |
| 103/60 |
97 |
60 |
103.0 |
|
Standard Dimensions for Medium-Length Interchangeable Taper-Ground Joints
|
| Joint size Number |
Approximate Diameter at small end mm |
Approximate Length of Ground Zone mm |
Diameter at large End of Ground Zone mm |
| 5/12 |
3.8 |
12 |
5.0 |
| 7/15 |
6.0 |
15 |
7.5 |
| 10/18 |
8.2 |
18 |
10.0 |
| 12/18 |
10.7 |
18 |
12.5 |
| 14/20 |
12.5 |
20 |
14.5 |
| 19/22 |
16.6 |
22 |
18.8 |
| 24/25 |
21.5 |
25 |
24.0 |
| 29/26 |
26.6 |
26 |
29.2 |
| 34/28 |
31.7 |
28 |
34.5 |
| 40/35 |
36.5 |
35 |
40.0 |
|
Standard Dimensions for Short-Length Interchangeable Taper-Ground Joints
|
| Joint size Number |
Approximate Diameter at small end mm |
Approximate Length of Ground Zone mm |
Diameter at large End of Ground Zone mm |
| 7/10 |
6.3 |
10 |
7.0 |
| 10/10 |
9.0 |
10 |
10.0 |
| 14/10 |
13.5 |
10 |
14.5 |
| 24/12 |
22.8 |
12 |
24.0 |
| 29/12 |
28.0 |
12 |
29.2 |
| 34/12 |
33.3 |
12 |
34.5 |
| 40/12 |
38.8 |
12 |
40.0 |
| 45/12 |
43.8 |
12 |
45.0 |
| 50/12 |
48.8 |
12 |
50.0 |
| 55/12 |
53.8 |
12 |
55.0 |
| 60/12 |
58.8 |
12 |
60.0 |
| 71/15 |
69.5 |
15 |
71.0 |
|
|
|
|
|
