May 25, 2020, 01:54:26 AM
Forum Rules: Read This Before Posting


Topic: Blank experiment  (Read 14728 times)

0 Members and 1 Guest are viewing this topic.

Offline AhmedEzatAlzawalaty

  • Full Member
  • ****
  • Posts: 191
  • Mole Snacks: +4/-31
  • Gender: Male
Blank experiment
« on: March 14, 2007, 04:59:41 PM »
what is blank experiment and how we do it ,when and why?

Offline AhmedEzatAlzawalaty

  • Full Member
  • ****
  • Posts: 191
  • Mole Snacks: +4/-31
  • Gender: Male
Re: Blank experiment
« Reply #1 on: March 17, 2007, 04:31:26 PM »
where is every body?

Offline billnotgatez

  • Global Moderator
  • Sr. Member
  • ***
  • Posts: 3972
  • Mole Snacks: +213/-56
  • Gender: Male
Re: Blank experiment
« Reply #2 on: March 18, 2007, 04:19:15 AM »
I am not sure of your terminology and this is not my area of expertise.

I assume the system you are using to measure something creates its own readings without anything in it to be measured. You take these reading when the situation is blank to subtract / remove from your final results when you measure the test item.

By the way, at the time of this posting this thread had been read 23 times and surely some of those readers were moderators or admins. This usually means that the question was too broad or confusing.


Offline AhmedEzatAlzawalaty

  • Full Member
  • ****
  • Posts: 191
  • Mole Snacks: +4/-31
  • Gender: Male
Re: Blank experiment
« Reply #3 on: March 18, 2007, 10:52:38 AM »
i mean as in indirect titration of an analyate we make blank experiment what does this mean?could u suppose some example?

Offline ARGOS++

  • Sr. Member
  • *****
  • Posts: 1489
  • Mole Snacks: +199/-56
  • Gender: Male
Re: Blank experiment
« Reply #4 on: March 22, 2007, 06:27:52 AM »
Dear ahmedezat,

(First:  Thank you for your Mail, - It makes me proud!)

I just realised, from both your questions, that you need a more
general answer to this/Your problem, and that means a more
philosophic one,  — “A Picture”:

 A.)  ALL POSSIBLE experiments/measurements are Questions to
       Mother Nature !!!
 B.)  Mother Nature holds the only contract, that HER answer is
       ALL THE TIME, as COMPLETE as POSSIBLE for
       the selected/designed (YOUR settings/design !!) of the
       experimental environment !!
 C.)  That means nothing else, as that you have ALL the TIME to
       use the following formula for your experiments/measurements (E/M)
       and your got Signal (S):
                       
       S(E/M)   =    Sj   =  S1 + S2 + Si + S4 + S5 + ……..          (Eq. 1)
                        j 
       (Have You seen:     Si = Signal of interest !!!)
 D.)  Quintessence:  You HAVE TO EXTRACT your Si,  ? of course, only
       if you prefer to be reliable:
       Si   =   S(E/M)   (S1 + S20.0000  + S4 + S5 + ……..)    (Eq. 2)
 E.)  Now you may realise, that the (Residual-)Term in Eqiation 2, after
       the Minus-Sign, is nothing else, as the Signal of your selected/designed
       Environment, called:
          The Blank   OR   Reference(in spectroscopy)  OR   ……   =  Senv.

       So the (Residual-)Term is also the Recipe, “How to do it”,  — 
       Make the identical experiment “with the Concentration”:   
                     Conci = 0.0000 !!!
 
Have You realized, to make “A Picture” of  “Everything plus one”, if possible THE correct, is ALL TIMES the most important to do,  —
But especially for to have success!!

Sorry, if it finally empowered a little too moralistic for You, But specially for the Others.

Good Luck!
                         ARGOS++

« Last Edit: June 11, 2007, 06:57:17 PM by ARGOS++ »

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 25767
  • Mole Snacks: +1686/-400
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Blank experiment
« Reply #5 on: March 22, 2007, 06:58:05 AM »
Please don't crosspost. Answering once in one thread is enough.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

Offline AhmedEzatAlzawalaty

  • Full Member
  • ****
  • Posts: 191
  • Mole Snacks: +4/-31
  • Gender: Male
Re: Blank experiment
« Reply #6 on: March 22, 2007, 02:55:10 PM »
thanx ARGOS for the philosophic answer , you deserve more than such mail,

Sponsored Links