CSIR Current Affairs - 2020

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CSIR develops new Hand Sanitizer without using chemicals

The Scientists at the CSIR-IHBT (Council of Scientific and Industrial Research-Institute of Himalayan Bioresource Technology) has developed a new sanitizer without using chemicals.

Highlights

The scientists have used active tea constituents, alcohol and have developed the sanitizer according to the guidelines of World Health Organization. Usually chemicals such as triclosan, parabens, phthalates and synthetic fragrance are used in the production of sanitizers. None of these chemicals have been used in producing the CSIR formulated sanitizer.

The CSIR-IHBT has transferred the technology to a private company for commercial production. The company signed an agreement with CSIR to market the product in major cities of India.

Why Hand Sanitizers in preventing Corona Virus?

The Corona Virus spreads from droplets of nose or mouth of an infected person. It transmits when the person coughs or sneezes. The sanitizers kill virus that gets stuck to hands accidentally. WHO recommends sanitizers that contain 60% to 70% alcohol.

The sanitizers get absorbed into the skin and stays for a while. Therefore, using a hand sanitizer frequently while traveling in public helps to stay away from COVID-19.

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CSIR develops Bi-Luminescent Security ink to Curb Fake Currency Notes

The Council of Scientific and Industrial Research along with National Physical Laboratory recently discovered a bi-luminescent security ink. The ink shall be used to counterfeit currency notes. Also, it shows two colours when exposed to light.

About the Ink

The ink is white in colour when placed under normal white light. When placed under Ultraviolet light, it turns red. Later it turns Green when the UV light is turned OFF.

The emission of red colour is due to fluorescence and the emission of Green colour is due to phosphorescence effect.

How is the ink made?

The ink produced by mixing two different colours namely green and red in the ratio 3:1. This mixture was hated to 400-degree Celsius. The high temperature turns the mixture into fine white powder.

The thermal treatment is provided in preparing the ink in order to ensure the colour pigments stick to each other.

The ink is also to be used in passports

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