T/SICCA 007-2019 Active Group standards

T/SICCA 007-2019 Nitrogen-free exhaust cabinet

Publish Date: 2019-11-21 Implement Date: 2019-12-31 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SICCA 007-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic laboratory equipment

ICS Name: Chemical laboratories, laboratory equipment

Publish Date: 2019-11-21

Implement Date: 2019-12-31

Scope

Scope: This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of clean-air type exhaust hoods (hereinafter referred to as "exhaust hoods"). This standard applies to clean-air type exhaust hoods. Main technical content: 5.1 Basic requirements 5.1.1 The surface of the exhaust hood shall be smooth, free from scratches, indentations, rust stains, with a strong adhesion and reliable bonding of the paint film. There shall be no defects such as bubbles, flow marks, or wrinkles. 5.1.2 The joints between the panels of the exhaust hood, the operating window, the frame, the exhaust duct, and the cabinet door shall be smooth and tightly sealed. 5.1.3 The opening and closing of the cabinet door of the exhaust hood shall be light and flexible, with no jamming within the range of the opening and closing stroke. 5.1.4 The worktop of the exhaust hood shall be able to prevent overflow. 5.2 Noise requirements The noise of the exhaust hood during normal operation shall not exceed 62dB (A). 5.3 Air velocity requirements at the operating port The average surface air velocity at the operating port of the exhaust hood shall not be less than 0.4m/s and not more than 0.5m/s. 5.4 Requirements for deviation in surface air velocity The deviation in surface air velocity of the exhaust hood shall be less than 15%. 5.5 Requirements for uniformity of surface air velocity The uniformity of surface air velocity shall not be lower than Grade 3 and comply with the provisions of Table 2. Table 2: Requirements for the classification of uniformity of surface air velocity Level of surface air velocity uniformity ≤ 4% Grade 1 4% to 6% (inclusive) Grade 2 6% to 8% (inclusive) Grade 3 5.6 Requirements for control concentration The control concentration of the exhaust hood shall not exceed 0.5mL/m3. 5.7 Requirements for the rated adsorption capacity of ai