SAFETY FIRST

This apparatus uses a heat source (optionally

available) to heat the contents of the Boiling Flask.

Use caution when handling to prevent burns!

Protect eyes and skin from hot gasses and broken

or chipped glassware.

Be sure all components are properly set up

(Refer to Figure 1). This apparatus is an open

system so pressure is relieved at the drip end of

the condenser. (Make sure you leave a small gap

between the drip tip and the receiving flask.)

Material may crystallize in the condenser, which,

over time, could block steam causing a dangerous

build up of pressure and possible explosion. When

finished with distillation, allow system to cool, then

drain the condenser of cooling water. Always work

with clean glassware.

Use caution when handling glassware,

especially when cleaning. Pad your sink with a

towel or rubber mat to help prevent accidental

breakage.

Ground glass joints can sometimes become

stuck together. Use silicone vacuum grease

(optionally available) to prevent “frozen” joints.

KIT CONTAINS (See Figure 1.)

Borosilicate (Heat Tempered) Glassware:

1.  Boiling Flask, 500mL  – 24/40 ground glass joint.

2.  Kjeldahl Distilling Column  – with 50mm

diameter bulb.

3.  Graham Condenser, 250mm  – 24/40 ground

glass joint.

4.  Drip Tip Adapter  – 24/40 ground glass joints.

5.  Erlenmeyer Flask, 500mL  – for receiving.

Hardware:

6.  Iron lab support stand with clamp.

7.  Iron tripod.

8.  Wire gauze square.

Other items needed (not supplied in kit)...

•  Heat source such as alcohol, Bunsen, or gas

burner.

•  Two pieces of flexible tubing to connect a water

supply to the Graham condenser.

ASSEMBLY

Assemble the Lab Support Stand by attaching

the support rod to the metal base. Then open wide

the jaws of the clamp and loosely attach it to the

support rod.

Assemble the tripod base by screwing the three

legs into the iron ring. Place the Wire Gauze

Square and the Boiling Flask on top of the iron

ring.

Next, place the Kjeldahl Distilling Column in the

top of the Boiling Flask, and attach the Graham

Condenser to the short end of the distilling column.

Adjust the clamp on the lab stand rod so as to

support the condenser at the proper angle. (See

Figure 2.)

Attach the Drip Tip Adapter to the end of the

condenser and place the drip end loosely into the

Erlenmeyer receiving flask.

Refer to Figure 1 for proper placement of clamps

and glassware. Do not force glassware to fit. Adjust

angle and height of clamps until glass joints seat

properly.

Finally, attach one length of optional rubber hose

to the bottom inlet of the condenser. This is the

water supply inlet. Attach the other hose to the top

inlet of the Condenser. This is the water outlet

port. Cooling water can be supplied from a nearby

sink (requires a user-supplied faucet adapter) or a

water bucket with submersible pump (also user-

supplied).

Never let the Boiling Flask run dry. Do not leave

a running system unattended for long.

The Science Company®95 Lincoln, Denver, Colorado 80203, USA / PHONE 800-372-6726 / FAX 303•777-3331

www.sciencecompany.com

DIRECTIONS FOR USING 24/40 DISTILLATION APPARATUS, NC-11663

WARNING: For use by adults with knowledge of general laboratory safety procedures.

Always wear proper eye and hand protection when handling glass labware and heat!

The Science Company®95 Lincoln, Denver, Colorado 80203, USA / PHONE 800-372-6726 / FAX 303•777-3331

www.sciencecompany.com