dilution concerns

English translation: problems with dilution

09:03 Jan 3, 2014
English language (monolingual) [PRO]
Science - Chemistry; Chem Sci/Eng
English term or phrase: dilution concerns
There is currently no gold-standard invasive or non-invasive method of determining absolute concentrations of ALF non-volatile constituents with which EBC can be readily compared.
For example, bronchoalveolar lavage is subject to its own **dilution concerns**.

I cannot understand about "dilution oncerns."
Please help!
yoshimi
Japan
Local time: 20:39
Selected answer:problems with dilution
Explanation:
The process of bronchoalveolar lavage can dilute the thing(s) they are trying to measure and therefore make the reading inaccurate.


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Note added at 1 hr (2014-01-03 10:43:06 GMT)
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As has been pointed out, if the dilution was constant, you could allow for it but, in this case, it is not constant.
Selected response from:

Terry Richards
France
Local time: 12:39
Grading comment
Thank you very much!! I understand well.
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
4 +4problems with dilution
Terry Richards


  

Answers


20 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +4
problems with dilution


Explanation:
The process of bronchoalveolar lavage can dilute the thing(s) they are trying to measure and therefore make the reading inaccurate.


--------------------------------------------------
Note added at 1 hr (2014-01-03 10:43:06 GMT)
--------------------------------------------------

As has been pointed out, if the dilution was constant, you could allow for it but, in this case, it is not constant.

Terry Richards
France
Local time: 12:39
Native speaker of: Native in EnglishEnglish
PRO pts in category: 16
Grading comment
Thank you very much!! I understand well.

Peer comments on this answer (and responses from the answerer)
agree  Alfredo Tutino: and, to be more specific, the exact ratio of diluition is difficult to extimate and to keep reasonably constant
52 mins

agree  Didier Fourcot: I understand "uncertainty on dilution ratio": dilution by itself is not a concern if precisely known
1 hr

agree  Veronika McLaren
2 hrs

agree  Jörgen Slet
4 hrs
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