Does stability of emulsion depend in the way they are stored? (like in beakers and tubes)?

I have an oil in water emulsion in which more oil is dispersed in less amount of water, the oil is viscous in nature. the emulsion seems stable when kept in tubes while it the same seems unstable...

19 March 2019 3,467 3 View

How to make multiple emulsion samples of different composition from single large sample?

I am working on oil in water emulsion. i wanted to know that if i make a 250 ml emulsion of 60% oil and 40% water containing 1000 ppm surfactant and remove 50 ml from it for stability analysis....

17 October 2018 2,075 1 View

What is the detailed procedure for SARA analysis of heavy crude oil?

I want the detailed procedure for SARA analysis, solvents required, apparatus and also detailed procedure on how to perform column chromatography with multiple solvents.

04 September 2018 2,158 6 View

What can be some of the research topics in Quality Improvement?

I want to do a research project on manufacturing industries that strive towards quality improvement to minimize the costs and rework.

17 February 2018 5,032 3 View

What should be sample sets for animal studies experiment?

I have isolated a pure compound from a medicinal plant and now want to check its activity in mice models. In this case, what samples should I to take into account from the following?: 1. crude...

06 September 2017 150 5 View

Purification of a doublet peak from reverse phase C18 smiprep/anal HPLC

20 July 2017 4,089 4 View

Detecting a ubiquitinated protein in vivo?

I am looking at ubiquitination of protein caused by inflammation. When I do my experiments in HEK293 cells with overexpression of my tagged protein, I see typical ubiquitin smear for pulldown...

24 November 2013 5,603 2 View

Why does semi-quantitative PCR at 30 and 35 cycles produce different results?

I have been doing semi-quantitiative PCR for detecting TLR expression in mouse primary hepatocytes. I am facing a problem with my current set of primers. After optimization, I am getting no band...

01 November 2012 117 15 View

Sample preparation for sugar analysis in potato tuber with a refractometer?

For my research it's needed to measure the concentration of the following sugars present in a potato tuber: sucrose, fructose and glucose. Is there a reliable method to measure these with a...

07 September 2020 5,718 4 View

Refractometers-Can the traditional prism be substituted by some other optical component/s?

Is there any way we can substitute the prism that is used in refractometers. For example, introduce other components like lenses or sensors instead of a prism? An idea which could be tried? Could...

04 May 2019 8,055 3 View

Only one peak in heavy fraction is acceptable for qPCR result for DNA-SIP?

Hello, I am doing DNA-SIP for 13C labeling soil samples lately and I checked the SCI papers which have done DNA-SIP work. Generally, after ultracentrifugation, we do density gradient fractionation...

17 March 2019 3,387 2 View

Where I can get automatic critical-angle dispersion refractometer facility in India?

We need to measure wavelength dependent refractive index of a liquid. Where we can get automatic critical-angle dispersion refractometer facility in India? Is there any other method to measure the...

31 December 2018 4,213 0 View

Modern methods for measuring the Brix and pH of grape berries?

Is there any newer and more efficient or accurate equipment for measuring the Brix and pH of grape berries than a digital refractometer (Brix) and a pH meter (pH)?

28 December 2018 4,103 5 View

Can someone tell me about the stages of a new instrument development please?

Dear all, I'd like to design (if i succeed) a new instrument for both the analysis of sugar and acidity of food products which is quite simple version of all these complicated laboratory...

22 August 2018 3,276 7 View

Can someone tell me about the stages of a new instrument development please?

Dear all, I'd like to design (if i succeed) a new instrument for both the analysis of sugar and acidity of food products which is quite simple version of all these complicated laboratory...

07 August 2018 3,237 8 View

How to prepare Saturated aqueous solution of Zinc Chloride (slightly acid) pH <7 ?

I want to measure the refractive index of Poly (methyl methacrylate) PMMA film, using Abbe refractometer. Zinc chloride solution is required as contacting liquid.

13 February 2017 4,057 2 View

How to prepare Saturated aqueous solution of Zinc Chloride (slightly acid) pH <7 ?

I want to measure the refractive index of Poly (methyl methacrylate) PMMA film, using Abbe refractometer. Zinc chloride solution is required as contacting liquid.

01 February 2017 4,107 2 View

Can I use refractometer for measure sugar content in sweetpotato cooked?

I would like to measure sugar content in cooked sweetpotato. Please, could you give some information about the use of refractometer for measure sugar content in cooked sweetpotato? Thank...

31 December 2016 5,661 1 View