Hello
is a standard 1.5 mL tube made of polypropylene transparent to UV-A light?
Thank you
polypropylene is opaque and mate and it means visible light doesn't pass through the material. But UV A light has less wave lenght maybe can pass. The correct answer is doing a test.
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
I would like to investigate the surface of bacteria using electron microscopy to assess changes in specific conditions. Is there an established protocol for that? Thank you.
15 July 2024 2,338 2 View
Is there an established protocol to measure the permeability of bacterial membranes? Thank you
30 June 2024 6,614 3 View
I have a set of bacteria that I stained with fluorescent dyes to check for viability. The protocol suggests to place 5 ul of the suspension on a slide, cover with a cover glass, and observe on a...
16 June 2024 9,382 1 View
I would like to transfect bacteria with some plasmids. However, the bacteria are not competent but either isolated from the environment or purchased reference strains. Can I transfect these...
16 June 2024 9,384 6 View
After performing statistical analysis, there is the need to report the p-values in the text. Is there an accepted (published) stratification range? For instance, is 0.04 'slightly' significant?...
28 May 2024 7,724 3 View
I used Microscale thermophoresis(MST, from Nanotemper) to determine the constant of dissociation (Kd) between a protein (20 nM) and a ligand (1:2 serial dilution from 50 μM to 1.5 nM). I ran the...
04 May 2024 2,066 0 View
I would like to track in real time the growth of bacteria using fluorescent miscoscopy. I remember there was at least one plasmid that could be used: transfected bacteria would emit a red or green...
29 April 2024 7,095 3 View
Hello, I would like to take some publication-quality pictures of organoids. What magnification shall I use? Do I need a 60x or is a 40x enough? Thank you
15 April 2024 8,471 1 View
Hello, I think I am using a 5 mL pipette that is contaminated with bacteria. Nothing serious, just the usual environmental microbes. The problem is that the tips for the 5 mL pipette are without...
07 April 2024 6,716 1 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!
11 August 2024 3,770 4 View
A website software of Blackbody radiation law expert software can used through the following web site. http://39.105.188.151:3000/index
07 August 2024 1,706 0 View
I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....
31 July 2024 3,843 7 View
These will be used for the study of microplastics in the lung
29 July 2024 9,609 2 View
How can we calculate the percentage of configuration interaction (CI) in the UV output data of the Gaussian program? for example: Excited State 17: Singlet-A 5.1359 eV 241.41 nm...
28 July 2024 9,165 2 View
Accredited laboratory of JV "Uz-Kor Gas Chemical" LLC (Uzbekistan) is looking for providers to conduct interlaboratory comparison tests on gas chromatographic analysis of hydrocarbons (component...
25 July 2024 8,108 0 View
I was performing estimation of Total Soluble Sugar content in bacterial cultures by Anthrone method. Out of 9 samples, only one sample showed positive reading while others had a negative reading...
22 July 2024 9,576 4 View
I know that films and other low-thickness laminated products are produced using biaxial orientation, but is there something similar for sheets with a thickness of around 6 mm? Or are they...
21 July 2024 1,559 1 View
i need to find ECC for 4-MIMO antenna using radiation pattern on CST
16 July 2024 7,291 1 View