What exactly does "adjusting 8mM Ammonium Chloride" to solutions of pH of 9 and 10 mean?

From what I can interpret, it means making a 8mM Ammonium chloride stock solution using Deionized water, then gradually adding ammonium hydroxide (28%, 14M) until the pH meter reads 9 or 10 pH. Is...

05 June 2017 3,445 2 View

How to transfer suspension of Silica NP from ethanol into water?

Is there a method for transferring dispersed primary(~20nm) silica nanoparticles (NP) from ethanol to water without significant aggregation? If you happen to know a dispersed silica...

04 May 2017 4,040 3 View

What are some filtering methods for sub 100nm nanoparticles?

What are practical bulk filtration methods for suspended nanoparticles under 100nm, preferably under 20 nm? By bulk, i mean filtering more than 1 ml at a time. Glass filters I have seen are mainly...

04 May 2017 1,722 4 View

How to prepare Silica NP for SEM imaging?

02 March 2017 4,269 3 View

What commercial methods are there to recover and reuse alcohol solvents from synthesis procedures?

Since many synthesis procedures utilize high purity ethanol, methanol, etc... as the solvent in synthesis procedures such as the Stober process, I assume there should be a couple of recovery...

02 March 2017 5,724 2 View

How to deagglomerate then disperse silica nanoparticles in powder form?

We have an issue with 20nm silica nanoparticle powder not dispersing well in a gel and forming large soft agglomerates instead of separating into primary particles. Is there a known method for...

01 February 2017 5,393 4 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

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02 March 2021 3,060 3 View

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02 March 2021 932 1 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View