closed (can use plastic film and plastic strip).
d
、
If the security cabinet is released exhaust into the indoor, please seal exhaust port with plastic
straps.
e、For emergency exhaust, sterilize and neutralize formaldehyde, please pre placed a hosepipe near
the safety cabinet. And this hosepipe should be connected with chemical through hood or other
suitable discharge of poisonous gas exhaust device.
f 、 Place the heating device such as a commercially available electric heating frying pan, or
formaldehyde generator / neutralizer on the workbench and set the Temperature on 232
℃
~246
℃
, poly formaldehyde is evenly sprayed on the heating surface of the heating device.
The autoignition temp. of paraformaldehyde is 300℃。
g.Put the heating device used for neutralizer on the work surface. Neutralizer (ammonium
bicarbonate or equivalent substitute) it should be isolated from the air in the cabinet before we use
it . The following two examplestell us how to seprate from air:
Example 1: Ammonium bicarbonate or substitute uniformly sprayed on the heating surface of the
heating device, cover it with aluminum foil to prevent ammonium bicarbonate or disinfection
alternatives reacting with formaldehyde. The place we put aluminum foil should enable the heating
ammonia escape, or to prepare removing the aluminum foil at the start in neutralization stage.
Removing the aluminum foil does not allow leaking out formaldehyde from Microbiological Safety
Cabinet;
Example 2: The safety cabinet with the glovesas a whole is sealed with plastic film.
Ammonium bicarbonate or equivalent substitute was placed in sealed containers in Microbiological
Safety Cabinet, in the neutralization stage personnel of disinfection through the glove disinfect the
cabinet without breaking the seal system. The ammonium bicarbonate or equivalent substitutes is
removed from the sealed container and uniformly sprayed on the heating surface of the heating
device,the heating device is energized,ammonium bicarbonate or equivalent substitute will be heated
to release ammonia;
h. Heating plate, water beaker and hygrometer should be put on the workbench for Microbiological
Safety Cabinet , do not connect the wires in the cabinet;
i. Seal the front window working hole with a thick plastic film and plastic tape. Seal all possible leak
areas. Such as wire export,around front window working hole and the point where the plastic film
connect with Microbiological Safety Cabinet;
j.Measured the temperature and humidity inside the cabinet;
k. Temperature should be above 21 ℃, humidity should be 60% to 85%. Heat water in the beaker
with heating plater to achieve the desired temperature and humidity;
l..Before depolymerization formaldehyde in accordance with relevant provisions of the regulations
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