Simulacro Tema 6 A

Calibration requires a calibrated standard thermometer with defined uncertainty and correction.

An oven or estufa is a large and heavy heating equipment.

Used for drying materials and chemical substances, typically between 40°C and 200°C.

Air circulation ensures intense heat transfer and faster drying in ovens.

An estufa at 105°C.

A muffle furnace at 550°C.

Do not introduce wet products.

180 degrees Celsius.

All of the options listed.

It is necessary to distinguish between gas extraction hoods, laminar flow cabinets, and Biological Safety Cabinets.

They are, however, an instrument of work essential in the so-called 'dirty areas'.

The filters are intended to trap the particles contained in the air flow, with an efficiency of 99.9% for particles up to 2-3 microns in diameter.

3 categories.

A first difference between type A and type B is that class II type A are designed for the extracted air to flow into the same laboratory or outside it via a canopy-type connection and type B must have a hermetic outlet duct, exclusive to them, with an extractor and an appropriate alarm system.

They are closed chambers with an opening at the front to allow access to the operator's arms.

High coefficient of thermal resistance.

All of them.

Is a type of local ventilation device that is designed to limit the exposure of the operator to dangerous or harmful substances such as gases, fumes, vapors or dusts.

Also known as Laminar Flow Hoods, they provide an area delimited by surfaces that are easy to clean and disinfect with a flow of air filtered through pre-filters that retain the largest particles present in the air, and through HEPA filters (High Efficiency Particulate Air), which are high efficiency filters capable of retaining particles ≥ 0.3 µm with a minimum efficiency of 99.97%.

Horizontal if it is in the back.

Are those in which the HEPA filter is placed in the upper part of the cabin, so the unidirectional air flow moves through vertical parallel lines. They have a transparent protective screen that covers the upper front part of it.

Laboratory fume cupboards are collective protection equipment designed to guarantee appropriate protection of people against the risks derived from exposure to dangerous chemical products (carcinogenic, toxic, flammable, corrosive, etc.)

Visually inspect the slots of the deflector panel (aerodynamic system to increase air passage) to make sure they are closed and free of objects.

During work in which operators are handling products, materials and/or equipment inside the showcase, an opening of 20 cm in the horizontal position and 30 cm in the vertical position is recommended, for standard showcases of 120 to 15 cm wide.

If before starting or at the end of the work some damage or anomaly is detected in the operation of the showcase, especially in the case of the extraction flow, or either they will not be started directly, or the works will be suspended later and the guillotine will be left totally closed, until its repair, but never seal with tape the same

Once the operations inside the showcase are finished, the operators must leave them in a safe condition and without causing risks to third parties.