TECHNICAL INFORMATION
400
Capacities of Volumetric Ware
CAPACITY FOR CYLINDRICAL CONTAINERS Rules for finding inside diameter, length, or capacity of a cylindrical tube or container:
Column Height
Column Height
Inside Diameter Per mL
Inside Diameter
Per mL
Of Container
Of Capacity
Of Container
Of Capacity
3 mm
141.47 mm
16.5 mm
4.68 mm
3.5
103.94
17
4.41 4.16 3.93 3.72 3.53 3.35 3.18 3.03 2.89 2.75 2.63 2.52 2.41 2.31 2.21 2.12 2.04 1.96 1.88 1.81 1.75 1.68 1.62 1.57 1.51 1.46 1.41
4
79.58 62.88 50.93 42.09 35.37 30.14 25.99 22.64 19.89 17.62 15.72 14.11 12.73 11.55 10.52
17.5
Change all lengths and diameters to millimeters.
4.5
18
5
18.5
5.5
19
Change all capacities to milliliters.
6
19.5
6.5
20
CASE I — Capacity and total length are known. Find inside diameters. Divide total length in mm by the capacity in mL to obtain length of 1mL. From the table obtain the proper inside diameter for this length. CASE II — Capacity and inside diameter are known. Find total length. From the table obtain the length for 1mL corresponding to the inside diameter. Multiply the length found by the capacity to get the total length. CASE III — Total length and inside diameter are known. Find capacity. From the table find the length for 1mL corresponding to the inside diameter. Divide the total length by the length for 1mL to calculate the capacity.
7
20.5
7.5
21
8
21.5
8.5
22
9
22.5
9.5
23
10
23.5
10.5
24
11
24.5
11.5
9.63 8.84 8.15 7.53 6.99 6.50 6.06 5.66 5.30 4.97
25
12
25.5
12.5
26
13
26.5
13.5
27
14
27.5
ID = –L–
14.5
28
C L = Length for 1 mL of I.D. x Capacity
15
28.5
15.5
29
16
29.5
30
L C = ——————————
Length for 1 mL of I.D.
The Column Height per mL of Capacity for any Inside Diameter (I.D.) in mm can be found as follows:
ACKNOWLEDGMENTS Acknowledgment is made of information obtained informally over many years from the staff of the National Institute of Standards and Technology (previously the National Bureau of Standards).
———————1—————
x Pi x 0.001
( ) 2 I.D. ——— 2
1. N. S. OSBOURNE and B. H. VEAZEY, The Testing of Glass Volumetric Apparatus, Bulletin of Bur. of Stds., 4, 553-601 (1907-8).
2. E. L. PEFFER and G. C. MULLIGAN, The Testing of Glass Volumetric Apparatus, Circular C434, Nat’l Bur. of Stds.
3. J. C. HUGHES, The Testing of Glass Volumetric Apparatus, Circular 602, Nat’l Bur. of Stds.
4. Standard Density and Volumetric Tables, Circular No. 19, Nat’l Bur. of Stds.
5. VERNEY STOTT, Volumetric Glassware, Witherby, London (1929).
6. JOSEPHINE LEMBECK, “The Calibration of Small Volumetric Laboratory Glassware:, NBS IR 74-461, Nat’l. Bur. of Stds.
Assistance has been received also from many friends in the apparatus industry and users of glass volumetric apparatus in the preparation of the manuscript.
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