I have used HCl from bottle (36% stock, not expired, but a little orange) to prepare Tris-HCl pH 7.5 and the solution is a little pink; is that caused by the formation of magnesium chloride? Can I use the solution or should discard it?
31 December 2016 5,657 9 View
I have performed a cycloheximide treatment on HEK 293 cells (10 ug/ml CHX for 1 h, no FBS in the medium) and then I've performed a confocal immunofluorescence protocol. Nuclei are stained with...
03 April 2016 1,080 4 View
I've read some papers about this protein and its roles, but I'm not sure if it is expressed also in epithelial cells. Someone could help me?
31 December 2015 9,296 0 View
When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...
03 March 2021 4,892 5 View
Hello, We would like to increase the yield of our PCR product. We are running a series of PCR reactions that is targeting ~1.1kb sequence. We begin each reaction with ~400pg of template DNA...
02 March 2021 4,029 3 View
Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.
28 February 2021 3,640 3 View
Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...
26 February 2021 5,525 3 View
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
I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...
22 February 2021 5,324 3 View
22 February 2021 9,932 11 View
I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?
21 February 2021 2,558 5 View
Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...
21 February 2021 7,397 1 View
Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...
21 February 2021 8,680 1 View