Safety levels in a biological safety cabinet
The biological safety cabinet represents a primary containment barrier that allows safe work with biological agents. It is a device designed to prevent the escape of bioaerosols from the work area and, therefore, protects people and the environment from possible exposure to biological agents.
Differences between analytical and electronic balance
Balances are instruments whose purpose is to measure masses of bodies in greater or lesser quantity. They are characterized by their accuracy, their precision and their sensitivity. The first quality refers to the property that any physical instrument possesses to supply the result of a measurement with a value coinciding with the true one; this implies that the error is as small as possible.
What is a microcentrifuge?
A microcentrifuge is a special type of centrifuge that performs the function of centrifuging samples that are in small capillary tubes, in order to separate the components of these samples into two phases.
What is a hematocrit centrifuge?
A centrifuge for hematocrit is specialized equipment that allows to obtain the compact ratio of the volume of erythrocytes in the blood. In less than seven minutes, this machine allows the erythrocytes to reach their maximum compaction density, thus knowing their hematocrit level and also having cell-free plasma used later in other analyzes. Therefore, they are centrifugal machines widely used in laboratories, both in public health, as well as in research, in clinics, among others.
Laboratory Hoods: Differences
Laboratory hoods are fundamental pieces in the operation of this space to maintain air quality. The variety of hoods in the industry responds to the needs of scientists. Laminar flow hoods, biological safety hoods, and fume hoods all serve a purpose.
What is a microplate reader?
A microplate reader is a specialized spectrophotometer designed to read the results of a technique used to determine the presence of specific antibodies or antigens in a sample. The technique is based on the detection of an immobilized antigen on a solid phase, by means of antibodies that, directly or indirectly, produce a reaction whose product can be read by the spectrophotometer.
How does a natural convection oven work?
A natural convection laboratory oven is one that extracts the air from the environment in which the oven is located. So it transmits heat in a uniform way throughout the equipment creating a natural air circulation.
Horizontal and vertical electrophoresis: Differences
Gel electrophoresis is a laboratory technique used in genetics to separate mixtures containing DNA, RNA, and other proteins according to their respective molecular size and charge. The DNA, RNA, or proteins that must be separated in this method are run through a gel that contains small pores. The molecules are driven through the gel by an electric field.
Microscope: Halogen vs. LED
High-powered microscopes are often unable to provide excellent quality images due to improper use of light sources, which generally leads to inadequate illumination of the object. You must take into account that any correctly illuminated sample must be free of glare and the light must be scattered evenly in the visual field.
What is the function of the refrigerated centrifuges?
Refrigerated laboratory centrifuges are equipment used to achieve the sedimentation of the components in a homogeneous solution in their different densities at a predetermined temperature. For this, they have a special design that subjects the solutions to centrifugal rotation and acceleration at a high speed for a certain time, movements with which the solution is separated into two fractions, all this process occurring at an appropriate temperature, since said centrifuges They have a temperature control at which the sedimentation process takes place.