Who can help me please?

07 August 2017 3,819 0 View

Who can help me ?

how can i conversion CPS unite of measure to SV or mSV? Thank you in advance

05 June 2017 8,248 0 View

Who can help me?

Who knows, except styrene monomer another solvent for polyester Resin? Thanks you

01 February 2017 7,063 0 View

Who can help me in this reserch?

11 December 2016 1,570 0 View

Who can answer my question?

Who knows why the Hf acid hold in a plastic bottle? thanks in advance

07 August 2016 7,349 0 View

Who can help me to choose a surfactant?

I want to make a flexible polyurethane foam, but I find many holes in the foam, how can I delete them? And have a smooth foam? Thanks a lot

05 June 2016 1,045 7 View

To make flexible polyurethane foam, necessary to observe the mixing process?

05 June 2016 5,046 8 View

Who knows how can I stabilize the polyurethane foam?

01 February 2016 6,346 3 View

Who can help me please?

31 December 2015 221 0 View

Who can help me on polyurethane foam that does not remain stable?

What happens when I make polyurethane foam, and the foam does not remain stabl? Thank you

31 December 2015 8,087 8 View

How to simultaneously perform multiple biochemical assays?

I am a research scholar working on heavy metal stress on plants. I will be doing biochemical characterisation( protein, carbohydrate, proline, antioxidant enzymes and many more assays) at interval...

01 March 2021 6,999 3 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

What is a good reagent for lentiviral plasmid transfection in HeLa cells?

I have been using Lipofectamine 2000 but was hoping there may be a better protocol or one for something like Lipofectamine PLUS reagent.

24 February 2021 1,633 4 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

HPLC baseline failure (ACN/Water)?

My baseline increases without any explanation, it is only fixed by changing the solution B, will it be the column? Reagents? Bomb? Detector? Solution A: H3PO4 0.01% IN WATER Solution B: H3PO4...

21 February 2021 5,656 3 View

Which transfection reagent is the best for plasmid transfection of MDA-MB-231 cell line, Lipofectamine based or other reagent suggestion?

I try to transfect MDA MB 231 cell line with a plasmid by PEI, unfortunately, the rate of transfection is low, and now I wanna find and order the best transfection reagent for this cell line and...

19 February 2021 828 6 View

How can I measure the surface interaction or surface interfacial chemistry between polishing abrasives and upper surface of substrate ?

I am working on polishing abrasives. I need to do few characterizations ? which can provide the on time surface chemistry of substrate with polishing abrasive during optical polishing. I would...

18 February 2021 5,319 3 View

Any information about dinitrosalisylic acid reagent end point color stability ?

I work on estimation of alpha amylase activity using dinitrosalisylic acid reagent If i put the reagent to stope the enzymatic reaction and allow the reagent to react with the produced reducing...

17 February 2021 7,402 4 View

Has anyone performed a colorimetric RT-LAMP assay using Lucigens LavaLAMP kit?

Hi there, my lab recently opted to use LavaLAMP from Lucigen instead of the Warmstart kit from NEB. However, Lucigen has yet to create a colormetric kit for RT-LAMP, and adding phenol-Red (pH...

17 February 2021 5,399 1 View