Safety Cabinets Types

There are three kinds of safety cabinets classes i ii and iii.

Safety cabinets types.

They are usually are yellow in color. The types include a1 a2 b1 b2 and c1. These cabinets are further differentiated by types based on construction airflow and exhaust systems. 2000 biotechnology performance criteria for microbiological safety cabinets2 which originated in europe.

Type a1 formerly a type a2 formerly a b3 type b1 type b2 and type c1. Another class is planned to be added in 2017. This is recommended best practice. It has a common plenum from which 30 of air is exhausted and 70 re circulated to the work area as the downflow.

Whereas class i safety cabinet which is the most basic one provides personnel and environmental protection only. Understanding the differences between class ii type a2 and type b2 biological safety cabinets north america and en12469. It is also the most common safety cabinet of all the different types available. Nsf currently recognizes four types of class ii bscs.

While several different types of biological safety cabinet exist including class 1 class 2 class 3 see below all safety cabinets can be created and provided in accordance with the exact ergonomic and bio safety usage requirements of the laboratory. They identify jobsite areas where potentially flammable materials are located. Various flammable cabinet size and configuration options are available. Type b2 cabinets recirculate 0 total exhaust if it is determined that a process or procedure must be contained in a class ii bsc due to biohazard risk or cleanliness requirements the selection of the cabinet in our opinion is based solely on the quantity and the volatiles used in the process procedure within the cabinet.

Class ii and class iii biological safety cabinets provide personnel environmental as well as product protection. Each type s requirements are defined by nsf international standard 49 which in 2002 reclassified a b3 cabinets classified under the latter type if connected to an exhaust duct as type a2 and added the type c1 in the 2016 standard. Key features of yellow flammable liquid safety cabinets click to enlarge flammable liquid storage cabinets require 18 gauge steel construction for optimal fire resistance. Flammable cabinets safely store containers of flammable liquids.

There are five types. They require all biologically contaminated ducts and plenums to be under negative pressure or surrounded by negative pressure ducts and plenums. They keep dangerous liquids organized and segregated.