CCPaSEC logoCentre County Pennsylvania Senior Environmental Corps

at ClearWater Conservancy


CCPaSEC uses a Hach DR850 Colorimeter in monthly water testing.  The video below describes tips and time saving aids and the Nitrate-Nitrogen (NO3-N) test using a colorimeter.  Runtime 11 min. 37 sec.

Help with controlling the video.

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  • *Slider Dot / Timeline -
    • Move mouse pointer over horizontal line to the right of the Slider Dot to view min:sec of video frame time.  Click on the line to begin the video at that time point.  OR
    • Click and drag dot to fast forward or rewind video to desired video frame.
  • Left-side Start/Pause control - Click to start or pause video.
  • Volume Control adjustment - Click to mute or for full volume. Click and drag slider for fine tuning.
  • Video frame time / total runtime.

brightvideocontrols Task bar below video (right):

  • Quality Settings
  • Right Viewing Size adjustment - Click to view full screen.  ESC will exit full-screen viewing.

Video © Loretta Jeffreys & CCPaSEC 2013-2016


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