Dear All,
I thought I’d post the following as it may be useful to newbies that don’t have the capacity or for whatever reason do not want to build a fume hood.
Scott safety provide a series of masks, namely, the Sari, the FM4 and the Vision masks which connect to Pro2000 filter cartridges. These cartridges are able to provide guaranteed protection against NOX fumes and almost all other forms of particles.
These masks and filters work when your oxygen levels are above 17%; in layman’s, the NOX fumes must not make up more than 17% of the atmospheric content. Honeywell sell NOX detection and measurement devices for less that £75.00. Using in conjunction with the above can provide a good workable level of protection.
If the levels are above this, an air fed system must be used with protection from the contaminated atmosphere. I would not advise doing so. Above 17% is dangerous territory.
By using professional glassware such as 24/40 joints, closed systems can be created which with good heat and pressure management, can boil away nicely without pressure build ups and eruptions.
You will still get some emissions from closed systems whatever, but with the above PPE you will have little to no risk, particularly with use of a NOX reader.
These masks also protect from Sulphur Dioxide which in my opinion, is way worse than NOX if you are even slightly exposed.
I hope the above is helpful as I was looking for months for adequate NOX protection and even the general web is very difficult due to the varying standards, classes and brands of equipment. This can all be bought for less than 120.00 U.K. pounds so really no excuse.
Kindest Regards
I thought I’d post the following as it may be useful to newbies that don’t have the capacity or for whatever reason do not want to build a fume hood.
Scott safety provide a series of masks, namely, the Sari, the FM4 and the Vision masks which connect to Pro2000 filter cartridges. These cartridges are able to provide guaranteed protection against NOX fumes and almost all other forms of particles.
These masks and filters work when your oxygen levels are above 17%; in layman’s, the NOX fumes must not make up more than 17% of the atmospheric content. Honeywell sell NOX detection and measurement devices for less that £75.00. Using in conjunction with the above can provide a good workable level of protection.
If the levels are above this, an air fed system must be used with protection from the contaminated atmosphere. I would not advise doing so. Above 17% is dangerous territory.
By using professional glassware such as 24/40 joints, closed systems can be created which with good heat and pressure management, can boil away nicely without pressure build ups and eruptions.
You will still get some emissions from closed systems whatever, but with the above PPE you will have little to no risk, particularly with use of a NOX reader.
These masks also protect from Sulphur Dioxide which in my opinion, is way worse than NOX if you are even slightly exposed.
I hope the above is helpful as I was looking for months for adequate NOX protection and even the general web is very difficult due to the varying standards, classes and brands of equipment. This can all be bought for less than 120.00 U.K. pounds so really no excuse.
Kindest Regards
