In which case, you should no longer use the combination filter! Looking for an ABEK filter? This can cause chemical reactions between the gases inside the filters.Īn additional point of attention for combination filters: have you observed that one of the two filters - for dust or gas - has become saturated? Also, you should not use the filter for one type of gas and subsequently for another. There are also filters which not only protect against certain dangerous gases, but also against harmful substances, smoke and vapours: combination filters.Ĭombination filters can also be recognised by the colour code of the gases they protect against.Ĭombination filters and gas filters that protect against multiple types of gas may only be used for one type at a time. If the user is not able to smell or taste the substance, you must never use gas filters. This only applies to a working environment with concentrations of gases you can smell or taste. This is why you should replace a saturated gas filter with a new one immediately. The respiratory protection device being used is therefore no longer safe. This means the filter is allowing gas or vapour to pass into the mouth and lungs of the user. When a filter has become saturated, the user will be able to smell or taste the gas or vapour. Unlike, for example, a dust filter, it is not easy to determine whether a gas filter is saturated. The more activated carbon the filter contains, the longer it lasts.Īn ABEK filter that contains twice as much activated carbon as a different brand will last twice as long. The size of the filter also affects its service life. The rule here is: the higher the value, the shorter the service life of the gas filter.
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