(a) Place tubes containing samples in centrifuge, and close centrifuge cover.
(b) Connect electric cord to power source, set speed control at desired speed, and push toggle switch to
(c) To stop centrifuge, push toggle switch to OFF position. Never attempt to stop centrifuge with the
(d) For complete directions on preparing samples and for information on testing procedures, refer to the
applicable test methods in the test references.
(2) Channel Point Apparatus.
(a) Place sample in channel point apparatus.
(b) Make certain refrigeration equipment is connected to power source, and push toggle switches to ON
(c) For complete directions on preparing samples and for information on testing procedures, refer to
applicable test method in the test references.
2-28. CONSTANT TEMPERATURE BATH, REID VAPOR PRESSURE (RVP).
a. Component Parts. The Reid Vapor Pressure (RVP) constant temperature bath (13, fig. 1-5) is assembled aid
installed at a convenient location on the floor of the laboratory. The equipment consists of the bath with heating
elements, thermoregulator, motor stirrer, overflow standpipe, and drain. Heating elements and motor are designed for
110-volt, 60-Hz alternating current. The RVP bombs and thermometer for use in the bath are stored in storage cabinets
in the laboratory.
When filling the Reid Vapor Pressure (RVP) bomb bath, exercise extreme caution in adding the
required 10 parts per million (ppm) of copper sulfate. Do not exceed this proportion as 12ppm of
copper sulfate is poisonous.
b. Operation. For detailed directions for preparing samples and assembling apparatus, and for information on test
procedures, refer to appropriate test methods in the test references.
c. Maintenance. Maintenance consists of cleaning apparatus and oiling the motor.