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Questions related to Liquids
I need to prepare 500 mL of aqueous solution of 1mM Methyl Jasmonate dissolved in 0.1% of Tween 20 for foliar application. How much MJ and how much Tween 20 do I need to use? Both compounds are...
03 May 2019 6,385 2 View
I designed and constructed a contact angle measuring apparatus. I am now looking for a standard which I can test the accuracy of my setup
02 May 2019 3,227 0 View
The net effect of the interaction potentials on the wetting behavior by considering a liquid film of thickness on a solid substrate. If, for instance, the adhesive solid-liquid interactions are...
29 April 2019 2,409 1 View
I am using ICP OES to quantify copper concentration in Samples.
16 April 2019 9,474 3 View
Pls help me how to improve the Paint transfer efficiency in liquid painting process ?
09 April 2019 4,610 2 View
Hello. I'm starting work on analytical electrochemistry. The most common way of degassing the solution is bubbling nitrogen. However, what about vacuum? Can it be as potent? Could not find info on...
08 April 2019 4,367 8 View
whooooops. Figured it out
08 April 2019 8,236 3 View
This question is based for the linear flow of viscous fluid under the condition that heat changes the density of the liquid. As a result, the volume increases and the pressure also increase. This...
07 April 2019 4,169 5 View
Nickel, as a counter electrode, provides a constant baseline for liquid chomatography-amperometric detection while platinum fails to give a stable baseline, why? is that related to its atomic or...
03 April 2019 9,121 1 View
Hello, I would like to know if it is possible to use vegetable material sprayed with liquid nitrogen in mortar and then lyophilized, to perform biochemical analyzes such as enzymatic activity,...
01 April 2019 4,337 3 View
When I recover the PK-15 cells from the Liquid nitrogen after 48h I passage it, I use 1.5mL trypsin for 5 minutes at 37C to detach them. They detach very well but when I passage it on 2nd, 3rd and...
28 March 2019 4,435 3 View
Dear Sirs and Madams, I have some problems about QC(quartz crystal) in high viscosity liquid. How could I let the quartz crystal resonant in high viscosity liquid?
27 March 2019 1,359 3 View
Earlier I have done GCMS using dried and crushed solid samples. But this is in liquid phase. So Im confused as to which protocol should I use? How to obtain the mixture in solvent form for doing GCMS?
25 March 2019 1,986 10 View
As I am trying to pipette a liquid solution from 25 ml solution into 25 different tube but each time my solution ran out before filling all those tubes. Now what should I do?
25 March 2019 4,414 5 View
Good day! Can someone help me? How can the mixing speed be taken into account in the mathematical model of diffusion in a liquid medium?
20 March 2019 7,265 3 View
Co-workers tell me that LAmbert's law is only for gases and liquids. I have already calculated the transmittance coefficient, how can I now obtain the absorptivity? Thanks
19 March 2019 7,082 3 View
Trouton's rule says that entropy of vaporisation is almost same (85 J/ (K.mol)) for lot of liquids near melting point. This usually works out as the entropy of gas is much higher than that of...
11 March 2019 1,780 10 View
while doing growth experiments, I need to ensure homogeneous inoculation of the secondary cultures of the bacteria that I'm working with, Thermobifida fusca,. But it grows as clumps in liquid...
05 March 2019 1,370 1 View
hi All , i am using Rhizobium species for Atrazine (as nitrogen source )removal in MS medium, unfortunately from last week its not showing growth in liquid medium while some bacterial colonies are...
26 February 2019 522 3 View
I have some questions about DLS (Dynamic light scattering). Does this method give the concentration of the particles in the suspension? Is there any limitation in the percentage of the particles...
25 February 2019 1,163 3 View
So, I have made nanoparticles capped with oleic acid and want to do their ftir but the problem i am facing is that i am unable to get them to dry because of the polymer (they are dispersed in...
21 February 2019 727 7 View
I am labelling my peptide with MW 768.46 with FITC in DMF/TFA/H2O solvent mixture. After 12 hours stirring i get my product. It is a liquid mixture, i want to get solid product. Which method is...
20 February 2019 331 1 View
How to model vapor recompression distillation in Aspen Plus? I want to simulate it "With no condenser", but it`s giving following Error: A LIQUID FEED/PUMPAROUND TO THE TOP STAGE IS REQUIRED WHEN...
16 February 2019 8,746 3 View
I noticed about a year ago that rain falling on a puddle always formed circular rings. Does anyone know the specific reason for this? Also, are there any liquids that don't form circular rings...
10 February 2019 1,959 6 View