TRANSFERRING A PRECISE VOLUME OF LIQUID A pipette bulb is used to draw liquid up into the pipette. There are many types of pipette bulbs. The use of 3 types will be demonstrated in this module. The first to be demonstrated will be the common rubber bulb.
Front blackout marker light. 1  Front marker lights are typically mounted below or to the side of the vehicles normal headlights. 2  Rear marker lights or blackout taillights are typically housed in the same unit as the vehicles taillights, and are the main tool in keeping the proper following distance in nighttime convoy driving.
Markers identify the pipeline operator and show a 24-hour emergency telephone number where the operator can be reached. The marker will state the material that is being transported within the pipeline. Markers indicate the general, not exact, location of a pipeline. Markers do not indicate how deep the pipeline is buried. Nor do they necessarily indicate how many lines are in the area. And, pipelines do not necessarily follow a straight course between two markers. Never rely solely on the presence or absence of pipeline markers.