What test setup and methods do you recommend for identify frauds in cosmetic products?

01 January 1970 0 5K Report

Hi everyone

I have a control and evaluation laboratory for cosmetic products. In this laboratory, I will identify frauds in cosmetic products. What test setup and methods do you recommend?

Badges
Science topic

More Mahsa Ostadgholami's questions See All

What is the effect of moisture of the atmosphere on titer of Karl-Fischer reagent (one-component)?

I have a Karl-Fischer reagent (for volumetric titration, which is a one-component reagent) with a titer of 5mg/ml. All references unanimously say the Karl-Fischer solution loses its capability...

02 July 2024 5,044 3 View

What is bibliometric article?

Greetings and Regards I have a question about bibliometric articles about public health or nursing. If any of the researchers have experience or knowledge in this matter, please tell me. Thank You

15 June 2024 2,795 1 View

Is there any guideline for method validation for cosmetic?

Hi everyone Is there any guideline for method validation for cosmetic? I wanna know about criteria for that.

31 May 2024 1,990 2 View

Which types of data can be used for lung cancer mutation detection?

I am working on a project to detect genetic mutations in lung cancer using machine learning algorithms and I am new to genetics and medical sciences. Can I use RNA as input to the algorithm for...

13 May 2024 5,726 6 View

How can i prepare self healing hydrogel for MTT assay?

Generally when they want to use hydrogel for MTT assay, firstly they fix hydrogel with glutaraldehyde then use for MTT assay. so, now, i have self healing hydrogel and its have crosslinker in its...

11 May 2024 6,310 1 View

How can I extract and determination PAAs and PAHs in tatoo?

Hi Have a nice day I want to determination PAAs and PAHs in tatoo. Would you present and introduce methods to this?

02 April 2024 6,772 0 View

Is there a way to improve the fragility of polyethylene terephthalate after hot press?

"Hi, I gasify the polyethylene terephthalate granules and mold them using a hot press at a temperature of 260 degrees Celsius to prepare a bulk sample. However, after molding with the hot press,...

31 March 2024 8,668 0 View

How can I overcome the overfitting problem?

I have a dataset from lung cancer images with 163 samples (2D images). I use the fine-tuning of deep learning algorithms to classify samples, but the validation loss did not decrease. I augmented...

21 March 2024 8,344 6 View

Solvent for polyphthalamide?

Hello, I want to dissolve polyphthalamide in a solvent. I tested different solvents, formic acid, toluene, DMSO, alcohol-based solvents, etc. under high temperature and time, but it did not...

12 March 2024 3,030 1 View

Microplastics removal from wastewater?

Hi. I need to remove all microplastics of a wastewater sample without changing any physicochemical properties of the sample. Can filtration by Whatman filters (for example Whatman 589/3 with...

08 March 2024 8,722 3 View

Project/Experimental assistance ？?

Do experiments on behalf of Our Business: Laboratory animal rearing Animal modeling Experimental animal behavior detection, image ultrasonic detection, electrophysiology platform Organoid...

05 August 2024 5,829 1 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Can you recommend provider Intermediate laboratory test for hydrocarbon, polyethylene & polypropylene?

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

How are clinical and environmental yeast/fungal strains stored usually in mycology laboratories?

I understand a glycerol stock for long-term preservation would be ideal, but how are working cultures generally stored? Mainly concerning Candida spp. isolates. A few references mention that they...

22 July 2024 6,592 3 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

What is the method of standard curve of IAA preparation?

Hi, I should prapare a standard curve of IAA and I don't know the method is. For measuring of IAA in bacteria, I culture bacteria in TSB medium and mix the supernatant of inoculated medium with...

29 June 2024 4,421 1 View

How to deal with lab test values above quantifiable limit?

Hi, I'm analyzing data from an oncology trial and trying to perform statistical analysis including cox regression analysis and paired t-tests. My data includes laboratory test values, including...

22 June 2024 6,181 1 View

What can cause that mosquitoes from Rockefeller reference strain (Aedes aegypti) spend too much time in larval stages?

We have been rearing Rockefeller mosquitoes for many years in our laboratory without any problems, but lately, in spite of good viability of eggs and unchanged environmental conditions (27°C,...

20 June 2024 3,515 2 View

How to make 100ppm 1Liter methylene blue stock solution? How much weigh the dye require?

methylene blue stock solution

19 June 2024 10,030 3 View

Hey #zebrafish friends, does anyone know of some fake, reusable embryos that can be reused in a laboratory classroom setting for practice?

I want to teach a class using zebrafish embryos. It's in the afternoon, so I want to get my hands on some fake, reusable embryos that students can use for practice. Does anyone know of any?

10 June 2024 3,956 1 View