Sebastian Estay

Questions and Answers (12) View all

• Answer added in Bioprocess Engineering
  8 How to report starch concentration best?
  By Joseph Ho · University of Malaya
  Sebastian Estay · Pontificia Universidad Católica de Valparaíso

  I think you should mention which are your standard or stock solution ( i.e 10 %w/v of microbe and 1 %w/v starch ) and then mention wich are your fin... [more]

  I think you should mention which are your standard or stock solution ( i.e 10 %w/v of microbe and 1 %w/v starch ) and then mention wich are your final solution (i.e you final concentration or your work solution). In the case of the graphs you must use the true concentration of the work solution. I hope this help you. Regards
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• Answer added in Clinical Diagnostics
  12 What is the differentiation between specificity and sensitivity when doing a method?
  By Kathirvel Maruthai ·
  Sebastian Estay · Pontificia Universidad Católica de Valparaíso

  Hi, in simple words, specificity refers to the capacity of the method to discriminate or differentiate molecular compounds or cellular compounds that ... [more]

  Hi, in simple words, specificity refers to the capacity of the method to discriminate or differentiate molecular compounds or cellular compounds that have similar characteristics. For other hand sensivity refers to the capacity of your method to detect this compounds. Under a certain limit ( e.g: a method for detect iron with a sensitivity of 1 mM) you can´t detect iron o you can´t ensure the accurate of the results) I hope that this help you to understand this concepts. Regards.
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• Answer added in Chemistry
  6 Solvent extraction of Cu(II) in presence of Fe (III)
  By Sebastian Estay · Pontificia Universidad Católica de Valparaíso
  Sebastian Estay · Pontificia Universidad Católica de Valparaíso

  Thanks for your answer. I finally do a L-L extraction with choloroform and ditizone as extracting agent. Cheers 

  Thanks for your answer. I finally do a L-L extraction with choloroform and ditizone as extracting agent. Cheers
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• Answer added in Chromatography
  13 Does anyone know where can I download GC-MS libraries?
  By Sebastian Estay · Pontificia Universidad Católica de Valparaíso
  Sebastian Estay · Pontificia Universidad Católica de Valparaíso

  Thanks for your answers, i think the best option is buy the libraries. I will check the webs that you give to me. Thanks again , regards. 

  Thanks for your answers, i think the best option is buy the libraries. I will check the webs that you give to me. Thanks again , regards.
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• Question asked in Chromatography
  13 Does anyone know where can I download GC-MS libraries?
  I have the GCMSolution version 1.02 software (shimadzu). I hope you can help me. 
  I have the GCMSolution version 1.02 software (shimadzu). I hope you can help me.
  By Sebastian Estay · Pontificia Universidad Católica de Valparaíso
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