Does the pH of phosphate buffer changes with temperature aging?

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May I know the maximum chemical shift possible for carbon with hydroxy group?

May I know the maximum chemical shift possible for carbon with hydroxy group.. like ferrocenyl alcohals.. like and geminal alcohals.. in13C NMR. Thanking you.

09 October 2018 7,946 0 View

What is the pressure index of propellant?

Dear All, May I know what is the pressure index of propellant? how to calculate pressure index of propellant from burn rates at different pressures.. Thanking in advance fro your valuable time.

07 August 2018 5,654 1 View

How to calculate the molecular weight of PEG from proton NMR?

Dear All, I want to know the MW of polyethylene glycol. Please suggest me how to calculate the molecular weight from proton NMR. Thanking you.

05 June 2017 2,578 5 View

How to calculate the hydroxyl value or OH functionality of PEG from 1H NMR?

Dear all, I want to calculate the hydroxyl value or OH functionality of PEG from 1H NMR. Is it possible to calculate as end functionality as in the other oligomers..? What will be the degree of...

05 June 2017 7,445 6 View

Does aldehydes undergo nucleophilic addition or substitution reactions?

I want to conduct nucleophilic addition/substitution reaction on ferrocene carboxaldehyde. May I know the feasibility?

02 March 2017 1,407 15 View

How to measure the density of viscus liquids?

How to measure the density of viscus liquids? please suggest some simple method.

05 June 2016 2,580 1 View

How to measure the thermal conductivity of polymeric viscus liquids?

05 June 2016 9,890 1 View

What are the important factors that can be evaluated by dielectric measurements of polyurethane films?

Dear all, Thanking you in advance for your valuable time. We have prepared few PU films with controlled ferrocene loading in the order of 10-3 w/w %. We observed a little improvement in dielectric...

02 March 2016 8,864 3 View

How to update citation (from IECR in ACS) to my article (Plymer in Elsevier) in RG?

Citation to my article (My article is "POLYMER" in Elsevier and citation is from "Industrial & Engineering Chemistry Research" in ACS) was not updated. How to update citation to my article in RG?

02 March 2016 4,409 2 View

How to file a patent and how to choose patent publishers..?

How to file a patent and how to choose patent publishers..?Suppose we have developed a binder which is better properties than existing and very easy to synthesize. Thanking you in advance for your...

01 February 2016 6,742 0 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Ethylene glycol is newtonian or non newtonian fluid?

Some sources say it is treated as Newtonian as ethylene glycol has a higher viscosity than water, which affects the flow characteristics in simulations. But some also say it is non-Newtonian.

09 August 2024 2,111 2 View

AMAXA Lonza nucleofection lower volume of buffer?

Does anyone tried to do nucleofection with AMAXA by Lonza with lower than recommended amount of buffer in the cuvettes (100 ul)?

07 August 2024 4,616 0 View

Why I can't see any band in SDS-PAGE?

Currently, when I run SDS-PAGE, I don't see any bands at all, even though I used the same material just a day ago and it worked fine.... In our lab, we dilute the 10X running buffer to 1X and...

06 August 2024 5,373 2 View

How to assess the osmotic power of a substance?

Hello, I suspect that a molecule I am using is causing bacteria to experience osmotic shock. What chemical properties should I look for to compare this capability with those of other substances?...

06 August 2024 977 1 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

What is the best blank for nanodrop if I want to read a recombinant protein concentration?

Is it the "elution buffer" or the "dialysis buffer"? Note: I'll be using NanoDrop OneC

01 August 2024 967 3 View

When I simulate for S parameters using ADS, I have faced this issue that I have attached. Please anyone clarify me?

...

31 July 2024 1,671 3 View

How to check pH of a high strength hydrogel?

We are working on biopolymeric hydrogels. Our system is highly viscous and sticky, and the gel formed are high in strength. We are unable to use pH electrode and pH strip. Please suggest an easy...

30 July 2024 942 2 View

EDTA buffer solution?

Hello everyone! How can i prepare EDTA buffer solution (pH 8.2) to determine GSH levels? Thank you in advance.

29 July 2024 4,374 1 View