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Figure 2-17. Water Still Cabinet (Unit No. 7)
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TM-5-6640-214-14 Petroleum Base Laboratory Assembly NSN
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Figure 2-18. Tetraethyl Lead and Sulfur Determination Apparatus Cabinet (Unit No. 8)
TM 5-6640-214-14
Tetraethyl lead is a powerful poison. It can enter the body by inhalation or absorption through the skin. Tetraethyl lead
exposed to sunlight or allowed to evaporate forms triethyl lead, which is also poisonous. Any open receptacle, container,
clothing or other object in contact with these materials must be kept clean, or personnel may be subject to serious lead
poisoning.
2-15. TETRAETHYL LEAD AND SULFUR DETERMINATIOUN APPARATUS CABINET.
a. Component Parts.  The tetraethyl lead apparatus and sulfur determination apparatus are contained in the
drawers of the cabinet (fig. 2-18). The tetraethyl lead extraction apparatus consists of boiling flask with heating tube
wound with nichrome heating coil, Hopkins reflux condenser, rheostat, pipette, thistle tube, beaker, and supports. The
sulfur determination apparatus, lamp method, consists of lamp flask, burner with air inlet, wick, chimney, absorber, spray
trap with vacuum connection, and base. A vacuum pump, with a 1/4-horsepower, 110-volt, 60-cycle alternating current
motor, is mounted on a common base, which in turn is mounted to the inside bottom of the left part of the cabinet (fig. 2-
18). The pump is driven by means of a pulley to the pump motor.
b. Operation.
(1) Tetraethyl Lead and Sulfur Determination Apparatus. Refer to appropriate test references for complete
directions for assembling apparatus and preparing samples, and for information on testing procedures for determining
tetraethyl lead in gasoline and for determining sulfur in petroleum products.
(2) Vacuum Pump.
(a) Connect vacuum pump motor electric cord to electric outlet.
(b) Connect rubber tubing to vacuum pump and to testing equipment requiring vacuum.
(c) Turn vacuum pump switch to ON position. Be sure to check oil level in vacuum pump prior to
starting.
c. Preventive Maintenance.
(1) Tetraethyl lead and Sulfur-determination Apparatus. Clean all glassware with suitable solvent. Wash with
soap and water, rinse, and air-dry. Clean all metal equipment, and wipe dry with clean cloth.
(2) Vacuum Pump. Preventive maintenance is restricted to lubrication, adding or changing oil, tightening bolts
and connections and adjusting drive belts.
(a) Motor. Lubricate monthly with oil, lubricating engine crankcase, OE/HDO-10.
2-33

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