Gas extraction hoods: what types of laboratories are used in?
Gas extraction hoods are equipment designed for the protection of the user, against chemical exposures and dangerous agents, during the study processes. The protection is achieved by ventilation systems of the interior space, by an air flow caused through an adjustable working principle, avoiding in addition, the discharge of pollutants into the environment. This equipment addresses the need to control dangerous or irritant substances that are usually generated in the air, or released into the local ventilation device itself.
What is a freeze dryer?
The lyophilizer is the apparatus used to carry out lyophilization. It consists of the following parts: dry chamber or lyophilization chamber: it is the place where the substance to be lyophilized is placed, condenser with a refrigeration circuit: it communicates with the dry chamber and it is where the vapor that is produced in the sublimation is condensed and finally a vacuum system.
Freeze-dryers to conserve archeological artifacts
Freeze-drying is an equipment that works by making use of drying by vacuum freezing. The freeze-drying process, which is nothing more than an advanced dehydration procedure, removes all traces of water and moisture from the product and sublimes the ice, thanks to the low pressure to which it is subjected. Due to their incredible drying capacity, freeze-dried materials have a higher quality and benefits than dehydrated products through other processes.
Importance of lyophilizers for the production of yogurt
A freeze dryer is a machine in charge of the freeze drying process, also known previously as cryodrying, which is nothing more than the method of cold drying and subsequent sublimation of the ice of a material, which has been previously frozen. This process occurs because the water containing the product passes directly from solid state to vapor state, ignoring the liquid state. Freeze-drying is able to remove 99% of moisture from, for example, a food such as yogurt ferment, coffee, vegetables and fruits, among others, achieving great benefits in relation to the cost of transport, since, being a microbiologically stable product, a cold chain is not necessary and can be transported in greater quantity.
Freeze dryers: technique and operations
Freeze drying is a process also called freeze drying, and it is carried out in specialized equipment known as a freeze dryer. In this process, the product is frozen, by exposing it to cold air, then passing to a vacuum chamber, in which the humidity is sublimated, eliminating it by crystallization using mechanical vacuum pumps.
Laboratory lyophilizer: What are the different types that exist?
A lyophilizer is a laboratory equipment that allows to carry out lyophilization, that is to say, it is an instrument that is used to remove moisture from a product by cold drying, thus obtaining a dehydrated product that can be rehydrated when needed, thus fully recovering its properties at the time of use.
Freeze dryers in pharmaceutical companies
Freeze drying has become a standard practice in the pharmaceutical industry, since the beginning of its first applications around the 40’s. Since then, the freeze dryer has gone from being a simple vacuum drying equipment to become a highly sophisticated system and integrated, which combines a series of processes to guarantee a systematic production according […]
Thermocycler: real-time PCR
The thermocycler is a device that allows the polymerase chain reaction (PCR) efficiently and quickly, by automatic and cyclical changes of temperature required for the amplification of a chain of deoxyribonucleic acid (DNA), from a thermostable enzyme.
Use of Electric Scalpel for Gynecology
Electrosurgery is a technique used in certain surgical procedures whose foundation is the use of the electric current, transformed into heat, applied through an electrode on the tissue, in order to cut or remove it, all while the bleeding is controlled. This technique is widely used and has special utility in the elimination of skin diseases, such as cancer, although it can also be used in other specialties, such as gynecology and obstetrics, for the elimination of abnormal tissues in the female reproductive system.
How does an oxygen concentrator work?
Oxygen is on the World Health Organization’s list of essential drugs, yet it is not widely distributed in developing countries that carry the highest mortality burden for severely ill newborns, children, and adults. Poor oxygen access is often caused by cost and lack of infrastructure to install and maintain a reliable supply of gas. Even when oxygen supply is available in health care facilities, access to oxygen may be restricted because of lack of accessories, inadequate electricity supply, or a shortage of qualified staff.