BS 658:1989

Foreword
Committees responsible
Specification
Section one. General
1. Scope
2. Definitions
3. Basis of adjustment
Section two. Distillation flasks
4. Designation
5. Sizes
6. Material
7. Dimensions
8. Details of construction
9. Marking
Section three. Receivers
10. Volumetric accuracy
11. Type
12. Series of nominal capacities
13. Limits of volumetric error
14. Material
15. Dimensions
16. Details of construction
17. Graduation and numbering
18. Marking
Section four. Condensers
19. General
20. Type 1, fluid-cooled glass condensers
21. Type 2, air-cooled glass condensers
22. Type 3, metal condensers and cooling baths
Section five. Draught screens
23. General
24. Type A draught screen
25. Type B draught screen
26. Type C draught screen
27. Heat resistant flask support sheets
28. Wire gauze
Section six. Heaters
29. General
30. Gas heaters
Appendix
A. Guidance on the assembly of distillation
     apparatus
Tables
1. Dimensions for distillation flasks
2. Limits of error of capacity for receivers
3. Dimensions of distillation receivers
4. Dimensions of straight metal condenser tube
5. External dimensions of cooling bath for straight
     metal condenser
Figures
1. Distillation flask
2. Graduation and numbering of Crow receivers
3. Type 1 condenser
4. Type 2 condenser
5. Straight metal condenser in cooling bath
6. Top view of arrangement of curved metal
     condenser tube in cooling bath
7. Type A draught screen
8. Type B draught screen
9. Removable shutter for draught screen
10. Type C draught screen
11. Typical assembly of distillation apparatus
     with type 1 condenser
12. Position of thermometer in distillation flask
13. Typical assembly for electrically heated
     apparatus with curved metal condenser and type A
     draught screen

Eight flasks (sizes, material, construction, dimensions and inscriptions); three Crow receivers (sizes, material, construction, dimensions, graduations); three types of draught screen; three types of condenser; auxiliary equipment (heaters, thermometer, flask support boards). Guidance on assembly.

This British Standard specifies requirements for a range of components for the following apparatus used in the determination of the distillation characteristics of materials:

1. distillation flasks of sizes between 50 mL and 750 mL;
2. three Crow receivers of two classes of accuracy;
3. glass condensers of air-cooled and fluid-cooled designs;
4. metal condensers and cooling bath;
5. draught screens of three types;
6. heaters using either gas or electricity.

NOTE 1 It is recommended that, unless otherwise specified in the relevant method of test, one of the types of thermometers listed in BS 593, with an immersion length of 100 mm, is used.

NOTE 2 Guidance on how the apparatus may be assembled is given in Appendix A.

NOTE 3 The titles of the publications referred to in this standard are listed on the inside back cover.