Frequently Asked Questions
I've heard here and there that the activated carbons used in filtration fume hood filters are more or less all the same, regardless of the manufacturer. Some even claim that the activated carbons used are the same as those used in aquarium water purification. Does this mean there is only one type of activated carbon?
1/ In fact, there are hundreds of varieties of activated carbon, each with a specific function adapted to its use. Some activated carbons are developed to adsorb and then desorb, for example to recover valuable solvents or metals like gold.
Others are used as molecular sieves, such as in chromatographic columns. Other types of activated carbon are used to never desorb, as is the case with gas masks, mainly military, and our filters. You will understand that if this capture function is not controlled, a gas mask that desorbs would immediately kill the user! Many other activated carbons have specific applications and functions, such as cigarette filters.
Okay, I understand that there is an activated carbon for each application. So what types of activated carbon are offered by ERLAB and its Erlab filters department?
2/ ERLAB has had expertise since 1968, nearly 44 years of experience. Today it has an applied research laboratory, equipped with all the investigative tools, both in terms of equipment and specialized staff. These specialists are responsible, among other things, for determining the activated carbon applied to the specific use of our Flex type filtration hoods and our GFH type fume cupboards.
Erlab does not source standard activated carbon. It has developed a carbon specifically applied to our filtration hoods. Specialized partners manufacture a carbon that is as versatile as possible in terms of capturing molecules, according to our specifications.
This specification defines a whole set of quality criteria which are then meticulously controlled during production by our refiner and upon arrival at our factories by our laboratory, according to international ASTM standards and performance standards AFNOR NF X 15 211 and BSA. This experience in the field of filtration allows us to offer 4 types of filters that meet a very wide variety of laboratory applications. Finally, we have developed a 5th type of filter, based on Neutrodine® technology, which provides the user with unmatched versatility of use compared to other carbons available for filtration hoods.
I understand, but why do some manufacturers offer 8 to even 10 types of filters, some supposedly specifically adapted to Hydrogen Sulfide, others to cyanoacrylate, and even to mercury? Are ERLAB filters more limited in their application range?
Do you really study user handling?
And how many molecules have you actually tested with your filters?
So you can give me an indication of the lifespan of my filter?
6/ At the end of this scientific study, you are indeed able to benefit from the product most suited to your protection and to know the renewal frequency.
And thanks to the quality of our carbons, we can observe that the average lifespan of a ® filter (i.e., its molecule adsorption capacity) is often even higher than that of competing filters...
All these arguments are interesting, but on what standards are you basing them?
7/ The standards concerning carbon as a raw material are ASTM D2862-82; ASTM D2854-83; ASTM D2867-83 and ASTM D5742-95. These standards respectively govern particle size distribution, ash content, moisture content, and finally butane adsorption capacity of activated carbon. These raw material tests are in no way a quality test regarding safety.
This is why the design of our filters has been the subject of aerodynamic studies in the laboratory that optimize the adsorption parameters of the carbon contained therein.
But what about the AFNOR NF X 15-211 standard? Other manufacturers claim that their filters comply with this standard... why doesn’t ERLAB and its filters claim this?
8/ The AFNOR NF X 15-211 standard deals with the performance of a filtration hood or a recirculating fume cupboard as a whole (containment, speed, filtration system efficiency), but in no way defines the properties of a standalone filter separate from its filtration system. A filter alone therefore cannot comply with this standard!
Erlab, manufacturer of devices compliant with the AFNOR NFX 15-211 standard, nevertheless applies the same level of requirement to the manufacturing of filters!
Precisely, what can you tell me about the manufacturing of your filters that differentiates them from your competitors?
9/ We have developed filter casings specially designed to prevent settling and wall effects, which impact filtration quality and filter longevity.
Our catalog offers two types of structures adapted to your hood: a casing in electro-galvanized steel that avoids any risk of corrosion or a casing made of specially patented injected polypropylene (PP)!
So you follow strict safety standards, but what is your quality commitment?
10/ Each filter undergoes a quality control process that ensures the traceability of its production cycle. All our filters are identified by a serial number, a manufacturing date and a packaging date. A certificate that attests to the follow-up accompanies the delivery of each of our filters.
We also take particular care in the packaging of our products to ensure their perfect condition of use and storage after delivery.
I read that you offer replacement filters for CAPTAIR® devices but also for other brands. Is that correct?
11/ Absolutely! We have a particularly large catalog as we offer molecular filters for more than 350 models of filtration hoods and cabinets, grouped within 18 different brands. In total, nearly 1800 references are available!
All these advantages and features must have a cost?
12/ Our position as world leader in the filtration hood market also allows us to benefit from very favorable conditions on our carbon supplies. Moreover, ERLAB® manufactures thousands of filters and has automated its production lines. This allows us to market our filters at lower prices than those offered by manual productions.
How can I order my filters?
13/ You can buy your filters directly on the website erlab.com and pay by credit card. You can also contact us directly by phone, fax or email and choose another payment method. Finally, the company ERLAB® has a vast network of official distributors around the world.
What are the supply times if I order a filter today?
14/ Our production capacity allows us to respond to a request within a few days. In general, our filters are available within 48 working hours.
Can you give us some information about the company ERLAB?
15/ The company Erlab has existed since 1968. It has been recognized for 43 years as the specialist in molecular filtration systems. The company Erlab has a research and development laboratory equipped with the most sophisticated investigation and control equipment (gas chromatograph, FID detectors, mass spectrometer, Fourier transform infrared spectrometer, ASTM test bench, test bubble standard NFX 15-211) and a laboratory staff of six specialists, including two chemists and two PhDs in physics and chemistry, who work permanently on improving the Neutrodine® filtration system filters.
The company Erlab has three production and marketing sites, in the USA, Erlab Inc., in Europe, Erlab Sas and in China, Erlab Ltd, as well as sales offices in Malaysia, Spain and China. The Erlab companies have the Erlab Filters department specialized in the maintenance of filtration hoods and GreenFumeHood®.