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"Over 35 years of Custom Scientific & Industrial Glass Fabrication"
Technical Information
Glass Properties
All UFO 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
Standard Dimession for Interchangeable Tape-Ground Joints (European Size)
Nominal Size NS
Wall mm
OD mm
Pack Quantity
5/13
0,8
4
10
7/16
1,5
6
10
10/19
1.5
8
50
12/21
1,5
11
50
14/23
1,5
13
50
19/26
1,8
17
50
24/29
1,8
22
50
29/32
2,0
26
50
34/35
2,0
30
50
40/38
2,0
36
10
45/40
2,3
40
10
50/42
2,3
46
10
55/44
2,5
50
10
60/46
2,5
56
10
71/51
3,2
65
10
85/55
3,5
80
1
100/60
3,5
90
1
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 (American Size)
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 (American Size)
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 (American Size)
