See photo attached ---> https://ibb.co/mVfqy8
In the following distillation solvent P was actually hexanes.
We several peaks with retention times from 2 to 3 minutes. What is meant by the term hexanes and why do we see multiple peaks.
The mercury and diaphragm cell are two outdated processes used to produce chlorine. Due to their environmental implications they are being phased out. I am wondering what would be on average the...
29 March 2020 2,796 3 View
lets say we are doing a basic crystal violet absorption lab. ( alot of them on google) . And we are using spectrophotometry, What are other techniques that would be suitable to follow a change in...
13 February 2017 4,866 4 View
01 February 2017 5,792 5 View
I need to do some experiment with it in liquid form.
07 August 2024 613 3 View
I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...
03 August 2024 4,725 2 View
Do these peaks in the curve indicate primer dimer or non-specific products?
01 August 2024 7,466 0 View
Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?
01 August 2024 7,504 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
Why methanol and sulphuric acid, used in the analysis of polyhydroxyalkanoates (PHA) methyl esters by GC-MS? Additionally, why do we typically use non-polar solvents in GC-MS?
22 July 2024 1,210 2 View
Is it the best optimization ratio based on experiments?
22 July 2024 8,170 0 View
If you don't understand my question let me know
21 July 2024 563 1 View
I want to make 100 ml of MWCNT/distilled water mixture at a volume fraction of % 0.1. MWCNT density is 2100 kg/m3. I will add gum arabic as surfactant. If I add surfactant at a 1:1 ratio, will the...
19 July 2024 8,494 0 View
I used several solvents and measured the absorbency and determined the total phenolic content, but the results were similar after dropping them on the titration curve; What is the reason, please help
17 July 2024 5,151 5 View