Stain may be acidic or basic in nature
Use a solution of K2Cr2O7 and H2SO4 in water. It will remove stain easily.
I have tried this; but there was no complete removal of the stains.
From memory use chromic acid or try acetic acid solutions
The drug has a free phosphate group; mobile phase 0.1% formic acid and methanol in HPLC. Is it possible that methanol can form an ester with the free phosphate group of the drug (analyte)?
01 February 2013 8,021 1 View
Triethylamine interacts with silanols, but when it is used regularly with a C18 column, I think there may be an effect on the life of the column.
31 December 2012 2,013 4 View
LC-MS Analysis
31 December 2012 572 15 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!
11 August 2024 3,770 4 View
Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...
09 August 2024 5,444 7 View
I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...
08 August 2024 8,329 0 View
Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
Do experiments on behalf of Our Business: Laboratory animal rearing Animal modeling Experimental animal behavior detection, image ultrasonic detection, electrophysiology platform Organoid...
05 August 2024 5,829 1 View
I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?
02 August 2024 7,186 6 View
I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...
01 August 2024 8,368 2 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
I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...
30 July 2024 6,420 1 View
