SCHEDULE 2METHODS OF ANALYSIS
APPENDIX TO SCHEDULE 2
KEY TO FIGURE 1
A round-bottomed, long-necked flask of 1,000 ml capacity.
Distillation tube with a splash head, connected to the condenser by means of a spherical joint (the spherical joint for the connection to the condenser may be replaced by an appropriate rubber connection).
Funnel with a teflon tap for the addition of sodium hydroxide (the tap may likewise be replaced by a rubber connection with a clip).
A six-bulb condenser with a spherical joint fitted with a glass extention tube. (The connection to the distillation tube may be effected by means of a rubber bung instead of a spherical joint).
A 500 ml flask in which the distillate is collected.
The equipment is made of borosilicate glass.
KEY TO FIGURE 2
A round-bottomed, short-necked flask of joint, 1,000 ml capacity with a spherical
Distillation tube with a splash head, fitted with spherical ,joints. connected at the side to a funnel with a teflon tap for the addition of sodium hydroxide.
A six-bulb condenser with a spherical joint, fitted with a glass extension tube.
A 500 ml flask in which the distillate is collected.
The equipment is made of borosilicate glass.
KEY TO FIGURE 3
A round-bottomed, long-necked flask of 750 or 1,000 ml capacity with a bell mouth.
Distillation tube with a splash head and a spherical joint.
An elbow tube with a spherical joint and a drip cone (the connection to the distillation tube may be effected by means of a rubber tube instead of a spherical joint).
A six-bulb condenser with a glass extension tube.
A 500 ml flask in which the distillate is collected.
The equipment is made of borosilicate glass
KEY TO FIGURE 4
A round-bottomed, long-necked flask of 1,000 ml capacity with a bell mouth.
Distillation tube with a splash head and a spherical joint connected at the side to a funnel with a teflon tap for the addition of sodium hydroxide (a suitable rubber bung may be used instead of the spherical joint; the tap may be replaced by a rubber connection with an appropriate clip).
A six-bulb condenser with a spherical joint, fitted with a glass extension tube. (The connection to the distillation tube may be effected by means of a rubber bung instead of a spherical joint).
A 500 ml flask for the collection of the .distillate.
The equipment is made of borosilicate glass
KEY TO FIGURE 5
A round-bottomed, long-necked flask of 750 or 1,000 ml capacity with a bell mouth.
Distillation tube with a splash head and a spherical joint.
Elbow tube with a spherical joint and a drip cone. (A suitable rubber connection may be used instead of the spherical joint).
A six-bulb condenser with an extension tube mounted on a rubber bung holding a bubble trap.
A 750 ml receiving flask.
A bubble trap to prevent loss of ammonia.
The equipment is made of borosilicate glass.
KEY TO FIGURE 6
Reaction vessel, 350 — 400 ml capacity.
Tube for introduction of air.
Delivery tube with splash head.
Conical flask, 300 ml capacity.
KEY TO FIGURE 7
Separating funnel.
Bubble trap.
Conical flask, 300 ml capacity.
KEY TO FIGURE 8
Tray for flasks.
Tray support.
Heater.
Stirrer.
Controls for heater, stirrer and electric motor.
Electric motor.