ELEGOO 2PCS Mini Air Purifier with Activated Carbon Filter and Universal Adaptor for LCD/DLP/MSLA Resin 3D Printer

These things really do work to keep teh fumes down when resin printing. I have a Saturn 4 that I run in the garage so it gets really smelly in there, but one of these almost completely eliminated the odor. My only complaint is that there is no indicator showing battery remaining. The light turns red while charging and goes off when it is charged, and that is the only battery indicator you have. We just use one while the other is on the charger, then swap them each day - they seem to last over 8 hours. It's also so quiet that it is hard to tell when it is running.

Elegoo Saturn owner. I have only one printer, and using just one of these clears out my entire room of scent, which is useful in more ways than one.... I tested it by doing an 8 hour print. I left mine OUTSIDE the machine by the two little fans in the back, and it almost immediately started making the area smell normal, and these resin printers are smelly, ha! I also keep it on while washing/curing my prints, and for about an hour after I leave the room. Then I come back, and no smell. Tested it by going for a walk to clear my nose of any smells (its a thing, look it up) and even after cold winter air, no smell that a human can pick up on. Buy it, and you likely only need to use one. I have the main one that I use, and plan on using the second one as a backup in case anything happens to the first. Comes with two extra filters, so one for each. Or for my particular needs, three (including the basic filter from my "spare" unit). BUT, BIG BIG BUT.... You can not find the little activated charcoal filter anywhere. I have looked. I have found similar, but none in the appropriate dimensions, and none that were cheap enough for me to validate shaving the piece down that much. I will be instead buying some activated carbon cotton sheet as a filter. Cut several little squares (as many as needed, obviously) down to size and just layer them in the place where the little charcoal filter would normally go. Great product, works as good as advertised or even better. Stupid filter problem that NEEDS to be fixed. I say buy it, and also add some of that activated charcoal cottons sheets to your cart with it, save yourself the trouble in the future.

Picked up these ELEGOO mini air purifiers for my Bambu Lab P1S enclosure about a month ago and they definitely help with ABS and PETG fumes. The activated carbon filters do their job - my workspace doesn't smell like melted plastic anymore which is nice. My only gripe is I wish they moved more air.

I ordered the ELEGOO carbon filter replacement and it works perfectly! It came well-packaged in a sealed plastic wrap, which I really appreciated for keeping it clean and protected. The design was slightly different from the original model that came with my machine, but it fit just fine and functions just as well—no issues at all. It's been doing a great job filtering out odors, and I’m happy with the quality. Definitely a solid replacement option!

Great at reducing the odor from the resin.

These work fairly well, I definitely notice the difference when I forget to turn them of when printing. That said, I use eco-resin exclusively due to the confined area whese my printer is housed, it already has a low odor, so filtering what smell remains isn't especially difficult. Battery life on the newer run of filters us better than they were a year ago. My roommate has a set of first gen filters, battery life caps out at around 8 hours, I've had mine run for more than 12 with no noticeable power loss. So, now to the downsides. The charging light is annoying. It flashes red until fully charged at which point it becomes a solid red light. A color change LED would have been more useful here and something that definitely should have been updated along with the battery life. They are exceptionally quiet so much so that with normal ambient noise I have to have them 6-8" from my ear to tell if they're on. There's no light to show that they're powered on either. Again, this is something that should have been fixed in the 2nd gen devices. Finally, there are still no replacement filters available. It's been over a year since these devices were released and Elegoo still does not have replacement filters available. These 2nd gen devices at least come with 2 replacement filters (my roommate's 1st gen devices only came with a single set of filters). Without replacement filters available these are limited use devices, given that the new Elegoo Jupiter uses 4 built in versions of the same device that use the same filters this is something that Elegoo should have rectified some time ago. All in all, the price is good for what you get (2 devices and 4 filters) and they work well enough, but without replacement filters available they're only as useful as the amount of filters they come with, after that they're trash 3 month update: These worked great for the first month (roughly 6-7 print runs), not so much now. At around the 6 week mark I noticed that I couldn't tell the difference between printing with the filters on and printing with them off. On top of that they now reek to the point that it's difficult to charge them without stinking the place up. Seems as though the 6 month life on the filters is a bit of an overstatement. If the filters were available I'd go ahead and swap out for the spares I have and order replacement filters, but Elegoo has yet to release refils for these and I'm reluctant to waste the refils when they may only last 4-5 weeks. Until refills are available I'd suggest saving your money.

Works great. Battery lasted well over 20 hours

Haven't had and gripes about them. Some complained about not having a light when it's running. I don't think it needs it. It's very easy to tell when they are running. They're quiet, but they do make sound, and you can feel them running. Light feels like an unneeded power drain. As for power, some people had issues with that too. I'm not seeing it. On more than one occasion I turn them on for a print in the early evening, and they are still going by late morning when i remember I had stuff on the printer. On top of that, they went another 6-8 hours a couple of those times as i queued up another print. A single charge seems to last... I dunno, like 18 hours for me? It's just been a non issue. They're good for the price point.