Monday, March 31, 2014

Complete sterilization with autoclave

High quality autoclave is a recent addition to modern laboratories. These systems are an integral part of the medical field. Autoclaves generate high temperature steam to heat liquids above their boiling point so that medical or lab equipment can be sterilized properly.

Although, this lab gear has various application areas, they are most commonly used in medical or research facilities to clean equipment. Let’s understand why medical or lab tools need to be sterilized.

Most surfaces we come across in our daily life contain different types of bacteria and germs. These microorganisms are more likely to develop illness and infections. Sterilization is a process in which all types of life-threatening microorganisms like fungi, spore forms, bacteria, etc. are removed. This way sterilization helps reduce the risk of infections.

The process of sterilization is carried out by applying heat, high pressure, irradiation (in which ionized radiations are produced to clean objects), chemicals, or a combination of all these. The heat or high pressure needed to perform sterilization is generated by using advanced technology equipment, called laboratory autoclave.

Traditionally, cleaning of medical instruments was carried out by immersing them in boiling water. Some infectious bacteria or germs can survive in this process. It requires a high degree of temperature to kill those microorganisms. Autoclaves are perfect for this purpose.

This lab tool comes in various styles. The simplest form of these sterilization systems look like a pressure cooker. It is featured with a big pot with gauge on the top. The top is fixed to the pot with the help of blots. Pot contains water and heats it above its boiling point.

Another type of system is similar in size and external shape to a microwave oven. These systems are highly popular among doctors that they used to clean small batches of medical tools. These systems are featured with wheels so that that can be easily moved to where it is needed.

In large medical facilities like hospitals, big autoclaves are used. Due to their large size they can sterilize large batches of surgical tools in one cycle. The cleaning systems used in hospitals are one-touch instruments. This is because an operator has to put equipment (that needs to be cleaned) in the machine and to press the start button to begin cleaning process. The machine will carry out the rest of the operation automatically. This way, autoclaves helps to minimize the possibilities of infections.

Monday, March 10, 2014

What purpose to centrifugation devices resolve in laboratories?

Centrifuge devices come in numerous sizes and are used for different applications, making them a useful device in medical institutions and laboratories.  Nowadays, these devices are compact, made from either plastic or metal and look visually appealing.

These devices are controlled by a timer and have two modes of speed; low and high. Some of the devices available in the market have the capability of keeping the interiors cool, when the appliance is working on high speed.

These devices are used in medical laboratories for separating heavier materials from the solution. It is a laboratory equipment that operates with the help of an electric motor and works on the principle of sedimentation, which causes dense materials to settle down at the bottom, and lighter material to come on the top. These are simple devices, constructed for spinning materials at high speeds, thus causing separation of materials with the help of gravity.

The size of the laboratory and type of procedure that need to be performed in the laboratory will determine the type of Centrifuge that should be used. They are available in different models for carrying out different tasks. Laboratories mainly use two types of centrifuges, which are known as small size and big sized centrifuges.

Bench top and floor standing centrifuges

Bench top are available in small sizes. They are very easy to operate and can be used for separating components of different types of solutions. These small sized devices are the best for laboratories with limited space.

Floor standing centrifuges are sophisticated devices used for processing different types of samples. The best part is that large volumes of samples can be processed at a single time, making them a convenient option to be used in laboratories.


Refrigerated models

Normal laboratory separating devices do not work well for sensitive samples. Using refrigerated models for sensitive samples would be a fair idea to accomplish your objectives.

Besides this, there are many other types that are also used in laboratories for handling different types of solutions such as the following:

1. Preparative

This device is used for separating the organelles of a substance. These centrifuges do not have polar detectors for determining atomic density of the solution. These devices are commonly found in chemistry and biology laboratories.

2. Analytical

These types of devices are used for sampling substances of a solution containing different components. These devices make it easy for scientists to gather maximum information about samples, when they are in the unit.

3. Hematocrit

These centrifuges are used for handling medical blood samples and are comparatively smaller than preparative centrifuges.