Disinfection with alcohol is common sense. What is strange is that the alcohol used in medical treatment is alcohol with a concentration of 75%, but pure alcohol cannot sterilize. What is the reason for this?

The main reasons for the deterioration and smell of metal cutting fluid are anaerobic bacteria and aerobic bacteria. Aerobic bacteria have a characteristic. They must have sufficient oxygen in the process of survival and reproduction.

Generally speaking, a certain preservative can only kill or suppress a certain colony. Therefore, two or more preservatives are usually used in cosmetic formulations to achieve a broad antibacterial spectrum.

Liquid detergent contains a lot of water and organic matter, which provides a good source of nutrients for the growth of microorganisms. If microbial contamination sources are accidentally introduced during processing, storage, and use, the rapid growth and reproduction of bacteria and fungi will not only cause product deterioration, but may also endanger the health of consumers. The use of preservatives can effectively prevent this phenomenon. In the choice of preservatives, any preservative has the characteristics of the best use conditions and use restrictions.

The common types of microbial contamination in household care products include bacteria, molds and yeasts.

What is sterilization (sterilazation, sterilant)? Refers to the process of using strong physical and chemical factors to kill or remove all pathogenic and non-pathogenic microorganisms in the external environment, including bacterial spores and fungal spores. It is an absolute concept. The effect is expressed by the sterilization rate, generally ≥99.9999%.

Paint preservatives are characterized by high efficiency in killing bacteria, fungi, yeasts, and low dosage; good compatibility with paints, emulsions and other materials; easy to dilute with water, and easy to add paint, coatings and emulsions or In other similar materials; when pH≤9, it is stable.

Stability is the ability of in vitro diagnostic reagents to maintain the consistency of characteristics over time. It is a basic attribute that the reagent must have. It is an important indicator to ensure the effectiveness of the reagent during use, and it is also the responsibility of the manufacturer.

In today’s paper industry, due to the increasing shortage of available resources, the amount of waste paper recycled is increasing, and the recycling of white water systems is also increasing, which will increase the production of pulp; and neutral sizing technology is gradually being promoted and applied. In the alkaline system

A few days ago, the China Market Supervision and Administration (National Standardization Administration) approved 450 recommended national standards and 4 national standard amendments. These include "Clean Dioxide Disinfectant Hygiene Requirements", "General Technical Requirements for Disinfectant Filling Production Lines", and "Guidelines for the Classification of Enzyme Preparations", both of which will be implemented on March 1, 2022.