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Contact Person : Nicole Yu
Phone Number : 86-18924660320
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Easy Clean Laminar Air Flow System Negative Pressure Weighing Hood Modular

Place of Origin China
Brand Name YN
Certification CE/ISO
Model Number YN-LAF-1800
Minimum Order Quantity 1PCS
Price reconsideration
Packaging Details First in carton,then made wooden tray or as your requirement
Delivery Time 7-15 work days
Payment Terms L/C, D/A, D/P, T/T, Western Union
Product Details
Product Name Weighing Hood Purification Levels Class 100
Specification 1800x1800x2450mm Or Customize Internal Size 1700x1300x2000mm
Application Chemical Lab Standard (FS 209E) USA.
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operating room ceiling system


raw material sampling booth

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Product Description


Full 304 stainless steel weighing hood for pharmaceuticals industry


1. Negative pressure weighing hood description



Negative pressure weighing hood provide containment by utilizing high velocity air to capture air borne dust particles. Control exposure risk to hazardous materials for a wide variety of equipment and processes. Protecting the operator during sensitive tasks, this complied with GMP practices.


Applications: Negative pressure weighing hood subdivision of powder of liquids, charging and offloading materials to reactors, fluid bed dryers, granulators, filter dryers, glass ware skids in cleanrooms and so on.


Operating Features:

1: Negative pressure weighing hood modular. Easy-to clean rigid design with minimal joints

2: HEPA/ULPA Gel-seal down flow filter are replaceable from within the booth.

Gel-seal is more reliable than conventional gasket seals

3: Voltage-compensating blowers ensure stable air flow.

4: Magnehelic Gauges provide convenient and reliable means for monitoring

gauges air flow and filter condition.

5: Containment performance verified according to the ISPE good practice guide,

assessing the particulate containment performance of pharmaceutical equipment.


The weighing chamber (hood) is a dedicated local purification device for pharmaceutical, microbiological, and scientific experiments, which provides a vertical unidirectional airflow. Part of the clean air is circulated in the work area and partially discharged to the nearby area, causing negative pressure in the work area. Dust and reagents are weighed and dispensed in the equipment to control dust and reagent spillage and increase, prevent dust and reagents from inhaling harm to the human body, prevent cross contamination of dust and reagents, and protect the external environment and the safety of indoor personnel.


2.Weighing hood structure

1). The weighing hood is made of SUS 304 stainless steel plate;

2). Top configuration tank HEPA air filter;

3). At the bottom of the weighing chamber, configure the primary and middle efficiency air filter;

4). Weigh the top of the chamber and configure a uniform flow membrane to make the wind blow evenly.

5). Internal configuration high power low noise centrifugal fan;

6). The weighing chamber is equipped with two differential pressure gauges for monitoring the pressure difference of the intermediate efficiency air filter/the pressure difference of the high efficiency air filter;

7). The weighing room is equipped with a lifting table;

8). The overall structure of the weighing chamber is split type, which can be assembled on site;


3. Weighing booth Parameter

Model YN-LAF1500 YN-LAF1800 YN-LAF2400
External size(mm) 1500x1500x2450 1800x1800x2450 2400x1800x2450
Internal size(mm) 1400X1000X2000 1700x1300x2000 2300x1300x2000
Cleanliness: Class100 Class100 Class100
HEPA Filter 99.995 0.3um
Pre-filter 75% 5um
Air velocity 0.2-0.5m/s
Noise 57-65dB
Material Stainless steel 304/316
Power 380V/50hz
Standard (FS 209E) USA.


Easy Clean Laminar Air Flow System Negative Pressure Weighing Hood Modular 0Easy Clean Laminar Air Flow System Negative Pressure Weighing Hood Modular 1