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If I use the pre-built fan in my bathroom, good ventilation is sufficient for my darkroom?

I am creating a dark room wondering if I use the fan bathroom is usually already on the roof, would it be enough ventilation for my room black? I ran a vent pipe or through the fan trays of chemicals. That fan must be strong enough to breathe noxious fumes?

Here are some guide lines safety officer. What you can not see (or smell) can hurt you. The fan bathroom should be fine for a small room: Security in the photography darkroom is of paramount importance. Many chemicals used in photographic processes emit dangerous fumes. Other solutions produce potentially harmful gases such as formaldehyde, glutaraldehyde, hydroquinnone, ammonia, sulfur dioxide and hydrogen sulfide. Some ingredients can be corrosive. Darkroom ventilation is often inadequate and poorly designed. Poor ventilation can result in exposure to harmful chemicals. Safety precautions when working in photographic Darkrooms following safety precautions must be followed when working in the photography darkroom: Provide adequate ventilation. There will be at least ten changes of air per hour or 170 cubic feet per minute (CFM) for dark rooms and automatic processors. The open vent pipe should preferably be located behind and above the stop bath and fixer trays. The exhaust gas is circulated again. For darkrooms group, the amount of dilution ventilation of 170 cfm is multiplied by the number of trays of cream. Conduits used with exhaust systems local to prevent leakage of light from the exhaust outlet, provide a road safety for all chemicals used in the darkroom, never eat food or drink in an area with chemicals, no chemicals stored in containers of beverages to use current (eg, soft drinks), wear goggles and gloves when working with chemicals, to avoid dust when mixing dry chemicals. Mixed use chemicals if they are available, always wash your hands after using chemicals and before eating, drinking or smoking, and if there are electrical outlets close to wetlands, disable or use of circuit breaker ground fault (GFCI). All electrical equipment must be connected with the three pin son, and all circuits must be properly supported darkroom. Black and white photographic processes a wide variety of chemicals used in the treatment of photographs in black and white. Procedures in the film Black and White developing baths include developing, stop bath and chaperones, amplifiers, reducers, and toners. Development of more baths Developer hydroquinone are commonly used for phenidone Aminophenol and monomethyl sulfate. Other Development bathrooms are carbonate sodium or borax, sodium sulphite and potassium bromide. The dangers associated with the development of Black & White Bathroom Developer irritate skin and eyes. Much of them can also be powerful awareness. Mono-methyl-p-aminophenol sulfate creates many skin problems and allergies. Hydroquinone can cause depigmentation of the skin and eye damage after five or more years of repeated exposure. It is also considered as a mutagen. Some developers may also be absorbed through the skin to cause serious poisoning (eg, catechol, acid pyrogallol). Developers are moderately or highly toxic if swallowed. Ingesting less than a tablespoon of such compounds monomethyl as sulfate p-aminophenol, hydroquinone or pyrocatechol be lethal to adults. Symptoms include ringing in the ears (tinnitus) nausea, dizziness, muscle twitching, increased respiration, headache, cyanosis (turning blue from lack oxygen) due to methemoglobinemia, delirium and coma. Sodium hydroxide, sodium carbonate and other alkalis used as accelerators are highly corrosive by skin contact or ingestion. Potassium bromide is moderately toxic by inhalation or ingestion and slightly toxic by contact with skin. Symptoms of systemic poisoning are drowsiness, depression, incoordination, mental confusion, hallucinations, and rash skin. It can cause bromide poisoning during fetal development in case of high exposure to pregnant women. Sodium sulfite is moderately toxic by ingestion or inhalation, causing stomach pain, cramps, diarrhea, circulatory problems and nervous system depression. Not very toxic by skin contact. If heated or allowed to stand for long periods in water or acid, it decomposes to produce sulfur dioxide, which is very irritating if inhaled. Precautions when working with developing black and white lakes following safety precautions must be followed when working with bath black and white development: use of liquid developers where possible; When mixed powders develop, use a glove box, ventilation system (hood), or use a respirator approved by NIOSH toxic dust; pliers be used in the development of the baths. Do not put hands in the toilet developers. If splashing Solution Developer on your skin or eyes, rinse immediately with plenty of water for at least fifteen minutes, and do not use para-phenylenediamine or its derivatives, if possible.

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