How to evaluate the concentration of the standard preparation against an independent standard preparation?

Kindly assist about the evaluation of the concentration of the standard preparation against an independent standard preparation, prior to determine the selected sample calibration curve graph.

08 September 2018 4,216 0 View

How to choose column for HPLC analysis?

Please advice on best method approach to choose suitable column for HPLC to analyze targeted samples.

07 August 2018 4,700 0 View

Please educate me, What potential risks if my sample solvent is stronger than my mobile phase in HPLC analysis?

Professional advise will be appreciated, What potential risks if my sample solvent is stronger than my mobile phase in HPLC analysis? What happen or causes and solution

07 August 2018 1,889 0 View

What is most recommended samples purification between Column chromatography and Preparative Layer Plates (PLC) for HPLC analysis?

Kindly help with details advantages of Column chromatography over Preparative Layer Plates and disadvantages or vice versa for HPLC analysis

06 July 2018 8,688 3 View

What is the recommended procedure to clean the HPLC column daily before and after used?

Kindly help the recommended procedure to clean the HPLC column daily before and after used

06 July 2018 1,880 2 View

Which method of separation is more preferable, HPLC, NMR or GC for the determination of diatereoselectivity in polar or non-polar aldol products?

Which method of separation is more preferable, HPLC, NMR or GC for the determination of diatereoselectivity in polar or non-polar aldol products. What are the advantages or disadvantages of HPLC...

05 June 2018 7,753 9 View

Problem with ChiralPack IB column, can anyone help with best cleaning procedure?

Please, I have problems with ChiralPack IB column, can anyone suggest any possible solution because having poor baseline and can't find corresponding peaks.

01 January 1970 8,562 0 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

No title

01 March 2021 3,905 5 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

How do historians determine the credibility sources in modern history?

For a source to be considered reliable it must contain accurate historical information. But how does one determine the accuracy and reliability of sources in modern and recent history since not...

23 February 2021 1,346 13 View

Methodological confusions regarding deductive and inductive reasoning, hypothesis and theory test?

Hi Colleagues- What do you think about the following methodological issues: 1. Is it methodologically wrong to formulate quantitative research questionnaire based on inductive reasoning? 2. Is it...

21 February 2021 4,634 6 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

Where I can find materials to learn Fuzzy VIKOR methodology?

Please suggest ways to learn Fuzzy VIKOR methodology in a best possible way. And is there any toolkit available for the same? Thank you in advance.

20 February 2021 8,271 3 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

Where can I find a reliable and updated methodology related with the design of spiral heat exchangers?

I need to design an spiral heat exchanger, buy I don't know what reference or bibliography (preferably a book) should I consult in order to get an updated and reliable methodology related with...

14 February 2021 7,910 3 View