Please, I have problems with ChiralPack IB column, can anyone suggest any possible solution because having poor baseline and can't find corresponding peaks.
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 4,282 0 View
Please advice on best method approach to choose suitable column for HPLC to analyze targeted samples.
07 August 2018 4,765 0 View
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 1,960 0 View
Kindly help with details advantages of Column chromatography over Preparative Layer Plates and disadvantages or vice versa for HPLC analysis
06 July 2018 8,745 3 View
Kindly help the recommended procedure to clean the HPLC column daily before and after used
06 July 2018 1,956 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. What are the advantages or disadvantages of HPLC...
05 June 2018 7,813 9 View
I need comprehensive procedure for the determination of diastereoselectivity by H NMR in the reaction mixture?
05 June 2018 7,220 2 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...
11 August 2024 8,141 3 View
I've been performing RNA extraction on cotton petiole tissue for a few months now using the method described in the following paper, a derivative of the typical hot borate method...
08 August 2024 9,882 2 View
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 View
I am trying to recover liquid CO2 from a mixture of 0.6 CO2, 0.3 N2, and 0.1 O2. My aim is to recover about 99% liquid CO2 at the bottom of the column and make sure the amount of gaseous CO2...
06 August 2024 4,611 0 View
Hi everyone I need a file with a dirty and clean potato image
04 August 2024 7,199 4 View
Do these peaks in the curve indicate primer dimer or non-specific products?
01 August 2024 7,466 0 View
The module of the CAD detector is corona Veo. It has been idle for a long time. And it was not well maintained before idle. I have replaced the gas filters and flushed the system with a 50/50...
01 August 2024 7,805 0 View
Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...
30 July 2024 435 3 View
Hello Everyone I have a question about structure for connectivity analysis on sources. My goal: preprocess and cut data into trials create headmodels, using template MRI file perform source...
30 July 2024 2,744 1 View