Alert icon
We're changing our privacy policy. This stuff matters.  Learn more  Dismiss

Spectrophotometer Demonstration

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
14,413
Loading...
Alert icon
Sign in or sign up now!
Alert icon

Uploaded by on Nov 10, 2009

Help with calibrating and using a spectrophotometer.

Category:

Education

Tags:

License:

Standard YouTube License

  • likes, 2 dislikes

Link to this comment:

Share to:
see all

All Comments (4)

Sign In or Sign Up now to post a comment!
  • If you're looking for calibration kits check out NSG Precision Cells

  • Robot

  • @superphotonic The machine may be warming up the liquid increasing the kinetic energy of the particles and their rate of collision (not sure if that's the correct terminology for absorption....) with the rays of light, blocking more of them and increasing absorption. I'm just guessing here so you should probably ask someone that can give you a definite answer but I'd imagine a reading taken sooner rather than later would be more acurate

  • Should I wait a particular amount of time between placing a cuvette with the sample in the spectrophotometer and taking the absorbance reading?

    It seems the longer you wait, the higher the absorbance reading becomes...I've been wondering about the significance of this for a while, and what absorbance reading is the "correct" reading, so to speak?

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more