The weighing booth(bench) is a dedicated local purification device mainly for pharmaceutical, microbiological, and scientific experiments, dispensing,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.

The device maximum clean class level up to one hundred, it is the required equipment for GMP standard. The main performance parameters as below:
Purification level: 100-10000class;
Noise: ≤ 63dB (A);
Vibration: ≤ 3μm ( three directions X, Y, Z);
Normal operating conditions: temperature 5-40℃; relative humidity 80%;atmospheric pressure 80-160Kpa;
Lighting: ≥ 300Lx;
Appearance: baking surface is bright and smooth; anti-static air curtain is smooth, vertical, no damage.
Stability: four casters in the same plane;
Casters: flexible and reliable.

.Weighing booth structure

1). The weighing chamber 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;