METHODS OF SAMPLING AND TESTING HIGHWAY MATERIALS 93 
60. METHODS OF SAMPLING AND ANALYSIS OF 
CREOSOTE OIL 
(A. S. T. M. standard method U), serial designation D38-27) 
SAMPLING 
1. Wherever the oil is being loaded or discharged by means of a pump the 
following method shall be used : 
A one-half-inch sampling pipe shall be inserted in the line through which the 
oil is being pumped, on the discharge side of the pump, preferably in a rising 
section of the pipe line. This sampling pipe shall extend one-half way to the 
center of the main pipe and with the inner open end of the sampling pipe turned 
at an angle of 90 c and facing the flow of the liquid. This pipe shall be pro- 
vided with a plug cock and shall discharge into a receiver of 50 to 100 gallons 
capacity. The plug cock shall be so adjusted that, with a steady continuous 
flow of the oil, the receiver shall be filled in the time required to pump the 
entire shipment. The receiver shall be provided with a steam coil sufficient to 
keep the contents at a temperature not ex- 
ceeding 120° F. Immediately upon comple- 
tion of the pumping, the contents of the 
receiver shall be very thoroughly agitated 
and a duplicate i-quart sample taken imme- 
diately for the test. The amount of the drip 
sample collected shall be not less than 1 gal- 
lon for each 1.000 gallons of oil handled, ex- 
cept in the case of large boat shipments, 
where a maximum of 100 gallons is sufficient. 
ANALYSIS 
WATER 
I? 
is 
* 3.7"±0.2"— ->, 
1 ($4.0 mm. ± S.I mm.) 
Fig. 37.— Copper still 
F. in 2° F. 
Diameter, 6 
2. (a) Still. — A vertical, cylindrical copper 
still, with removable flanged top and yoke, 
of the form and approximate dimensions 
shown in Figure 37 shall be used. 
it)) Thermometer. — The thermometer shall 
conform to the following requirements. 
These specifications cover a total immersion 
thermometer graduated in either centigrade 
or Fahrenheit degrees as specified, the ranges 
being 0° to 400 ? C. or 30° to 760° F., respec- 
tively. 
Type : Etched stem, glass. 
Liquid : Mercury. 
Range and subdivision : 0° to 400° C. in 1° C. or 30° to 760 c 
Total length: 378 to 384 millimeters (14.88 to 15.12 inches). 
Stem : Plain front, enamel back, suitable thermometer tubing. 
to 7 millimeters (0.24 to 0.28 inch). 
Bulb : Corning normal or equally suitable thermometric glass. Length, 10 to 
15 millimeters (0.39 to 0.59 inch). Diameter. 5 to 6 millimeters (0.20 to 0.24 
inch). 
Distance to 0° C. or 32° F. line from bottom of bulb : 25 to 35 millimeters 
( 0.98 to 1.38 inches I . 
Distance to 400° C. or 752° F. line from top of thermometer : 30 to 45 milli- 
meters (1.18 to 1.77 inches). 
Filling above mercury : Nitrogen gas. 
Top finish : Glass ring. 
Graduation : All lines, figures, and letters clear cut and distinct. The first 
and each succeeding 5° C. or 10° F. line to be longer than the remaining lines. 
Graduations to be numbered at each multiple of 10° C. or 20° F. 
Immersion : Total. 
Special marking : "A. S. T. M. High Distillation." a serial number, and the 
manufacturer's name or trade-mark shall be etched on the stem. 
Scale error : The error at any point of the scale up to 370° C. or 700° F.. 
when the thermometer is standardized as provided below, shall not exceed 
1° C. or 2° F. 
