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Fume hoods and biological safety cabinets

Jun 13, 2018

As an important safety device in the laboratory, the fume hood provides an effective local ventilation method. Generally speaking, when conducting flammable and explosive and toxic and harmful gases in the laboratory, it should be conducted in a fume hood; at the same time, when testing for unknown performance items, qualitative and quantitative experiments, it should also be in the row. In the wind cabinet. It can provide appropriate safety protection for laboratory workers and the surrounding environment. The fume hood is suitable for food, hospital, water, sewage treatment, environmental protection, environmental testing, blood center, printing industry, disease control center, chemical engineering institute, chemical plant. , pharmaceutical factories, drug testing centers, drug testing centers and other industries and laboratories with certain corrosive industries.

The factory principle is:


1.Materials are selected for import and domestic high-quality polymer composite materials. Such materials are commonly used in spacecrafts, space rocket shells and spaceships, speedboats, pontoon terminals, and offshore drilling platforms. The fume hood made of this material has the advantages of no deformation, no rust for life, no paint, no discoloration, high temperature resistance, acid and alkali resistance, corrosion resistance, high strength, and flame retardancy.

2, special mold, process, by high standards Seiko secret agents, deep processing.

3, according to the requirements of various industries and on-site work environment to determine the selection of ingredients program, production of precision production, so that the product meets the needs of users.

4. Our laboratory furniture must be strictly checked by the quality inspection staff to ensure that the product is qualified before it leaves the factory.


Biological safety cabinet:


1 Scope This standard specifies the terms and definitions, classification, materials, structure and performance requirements, test methods, inspection rules, markings, labels, instructions, packaging, transportation and storage requirements of the safety cabinet. This standard applies to biological safety cabinets (hereinafter referred to as safety cabinets).

2 Normative references The clauses in the following standards have been adopted as references to this standard. For dated references, all subsequent amendments (excluding tenders) or revisions do not apply to this standard. However, it is encouraged that all parties who reach an agreement based on the purpose of this standard will study whether these documents can be used. new version. For undated references, the new version applies to this standard.

classification:


steel fume hood-01.jpg

4.1 Overview Safety cabinets are classified into I, II, and III grades based on airflow and isolation barrier design structures.

4.2 Class I Safety Cabinet The Class I safety cabinet has a safety cabinet with a front window operation port. Operators can operate in the safety cabinet through the front window operation port. It is used to protect people and the environment and does not require product protection. The front window operation inlet inhales negative pressure airflow protection personnel's safety; the exhaust airflow is filtered through an efficient filter and discharged to protect the environment from contamination.

4.3 Class II safety cabinets Class II safety cabinets have safety cabinets with front window consoles. Operators can operate the front window consoles in the cabinets to protect personnel, products and the environment during operation. The front window operation inlet inhales the negative pressure air flow to protect the safety of personnel; the high efficiency filter

Technical indicators:


2. The small negative pressure of the main laboratory of the third-level biosafety laboratory shall not be less than -30Pa relative to the atmosphere, and the negative pressure of the main laboratory of the fourth-grade biological safety laboratory relative to the atmosphere shall not be less than -50Pa.

2.1 Biosafety laboratories generally implement two levels of isolation. Level 1 isolation is achieved through biological safety cabinets, vacuum isolator, positive pressure protective clothing, gloves, goggles, etc. Secondary isolation is achieved through laboratory construction, air conditioning purification, and electrical control systems. Level 2 to level 4 biosafety laboratories should implement two levels of isolation.

2.2 The main technical indicators of secondary isolation of the main laboratory of biosafety shall meet the requirements of Table 1.2. The noise in this table does not include the noise of biological safety cabinets or animal isolators, and should not exceed 68 dB(A) if the noise of the above equipment is included.

3. For the primary laboratories of the third-level biosafety laboratories that keep animals, their negative pressure relative to the atmosphere must not be less than -50Pa; the negative pressure of the primary laboratories of animal biosafety laboratories with respect to the atmosphere should not be less than - 60Pa.