Whom working with QuEChERS soil sample preparation kits for pesticides? What the best way to extract them?And what are the ideal GC/MS conditions?

Sorry, i have several problems with pesticides extraction, i tried a lot of protocols without the right way.

02 March 2018 4,592 2 View

What is the best way to extract pesticides from soil matrix?

I have a severe problem with their solubility in ACN

02 March 2018 4,751 4 View

What are the pesticide residues that can be measured with UV-visible spectrophotometry?

What are the pesticide residues that can be measured with UV-visible spectrophotometry?And if possible, what are the reliable protocols to achieve this as well as the limits of detections?

10 November 2016 5,115 4 View

Isolates of Hymenoscyphus fraxineus?

Dear Dr. Cai, my name is Simone Prospero and I work in the team of Phytopathology at the Swiss Federal Institute for Forest Snow and Landscape Research (WSL;...

01 March 2021 1,133 1 View

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

The reason that the culture of white fungi Contamination with green mold(Trichoderma), the culture autoclave at121 for 15 min. What is it?

Is the period to autoclave not enough? The inoculation in a hood and flame and UV and alcohol.

27 February 2021 9,356 3 View

What is the most suitable medium of ascomycetes fungi ??

What is the most suitable medium of ascomycetes fungi ??

26 February 2021 4,413 1 View

Has anyone used the Illumina ITS1 primer sets?

Hi everyone, Illumina provides a list of primers to amplify with high taxonomic coverage the ITS1 region for further fungal sequencing, but I cannot find the exact amount necessary of each...

25 February 2021 6,969 3 View

Can 5-FOA Diffuse Through Agar?

I am preparing to do a gene knockout in the filamentous fungi Coccidioides posadasii targeting pyrG/URA3 so that 5-FOA can be used for selection pressure instead of traditional antibiotic...

16 February 2021 169 4 View

Any specific reason, how sclerotium rolfsii can grow out of Petridish?

Is it related to nutrition or any other reason? Any other fungus have similar kind of growth pattern?

09 February 2021 4,357 4 View

Which fungicide are good for primary cells? Does it yeast contamination? How to get rid of them without killing the cells? How to get rid of spores?

Hello! Our lab is working with primary cells which we are isolating from the colorectal tissue. During the isolation, we are washing the tissue with pen-strep and then also add some pen-strep in...

07 February 2021 8,258 3 View

Where can I find Plasmopara viticola?

Hello everyone, For my research I want to infect Vitis Vinifera leaves with downy mildew-causing fungus Plasmopara viticola. Does anyone know where I could find or purchase this fungi? I am...

04 February 2021 5,720 3 View

How to store Fusarium oxysporum for long period in simple methods ?

31 January 2021 1,832 17 View