Omicron Vaporizer Review (v2.5)

UPDATE: This vape now comes with the new KISS cartridge, which is more similar to other pens (wick and coil atomizer). However, the coil in the kiss cartridge is wrapped around a ceramic rod instead of a wick. I’ll be updating this review shortly to reflect the change, the new one is really nice!

So listen I normally review herbal vaporizers because that’s what I’m really into and know a lot about, but I get asked about oil vapes so often that I figured I’d give one a try.


I wanted to make sure I got a good one, so I did a little research and ended up buying the Omicron v2.5 by Delta 9.

It comes in a pretty cool case and here’s what it looks like when you open it up:

Omicron Case

I’m gonna spare you most of the mind-numbing technical details for now, if you have any specific questions after reading this review just let me know and I’ll def do my best to help you out.

Basically this vape is designed for use with concentrates, not dried herbs. More specifically, it works well with oils and waxes – almost anything that will fully melt and doesn’t contain any plant matter.

The Omicron v2.5

The Omicron feels well-made and it seems like they used high quality materials during manufacturing. Just to have something to compare it to, I also bought one of those generic e-cig type pen vapes and those are of noticeably lower quality.

As you saw in the first picture all the pieces of this vape can be separated for filling/cleaning purposes and also to insert/remove the battery.

Unlike many other pen vaporizers the actual battery itself is removable from the Omicron, and it comes with a wall charger to fit them in when you need to recharge.

Here’s what all the parts look like separated:

Parts Separated

So I’d say that the trickiest part about using this vape, and the part that some people might complain about, is actually getting your concentrate inside the cartridge.

The way it works is the cartridges come empty (some places sell them pre-filled) and then you have to use the included filling tool to get your oil in there.

It’s a little tricky the first time you try it but it only took me two attempts to get it goin. As I show in the image below, you fit the filling tool on top of the cartridge, then you put in your oil and slowly heat the bottom half.

There are various ways you can heat it, but you want to be careful not to overheat it, cus that could ruin your oil, so make sure you do it slowly. As the metal warms up the oil should run down into the cartridge.

Oil Filling Tool

The listed capacity is 1.0g of oil but they suggest only putting in about 0.5g to 0.6g for best results and to minimize the chances of it leaking out.

A good tip for knowing how much is in there is to weigh the empty cartridge before you start filling it, and then you’ll be able to calculate the rest with that number.

For best results, like most vapes, you’ll want to take a slow, fairly long draw to get a good amount of vapor.

The manufacturer claims the battery will last about 200 button presses on a full charge, and that you should be able to get roughly 300-400 draws per 1.0g of concentrate.

Vapor Production

I can’t say that I had too many complaints about this vape, it does seem to perform well and like I mentioned earlier seems to be a well-made device.

Since the cartridge isn’t sealed between uses I don’t really know if I would throw this vape in my pocket or anything like that, unless I knew for sure that it was gonna stay right-side up, cus leakage could potentially be an issue if it’s not (really depends on how runny the oil is).

The cartridge that it comes with (2.4 ohm) is the most user-friendly and should be all that most people need. If, however, you find that you want stronger draws and more vapor, they do also make a 1.5 ohm cartridge you can buy separately. That one uses more power and gets hotter, so it’ll vaporize your oil faster which in turn will give you stronger pulls, but it’s really recommended for more advanced users who already have experience with this vape.

Stay up!


  1. Barbara
    May 18, 2015 at 2:49 pm

    When you say that certain pens can be used with oils, are you talking about the oil that people make at home? I make RSO/FECO/CO, everyone uses a different name. Mine is made with a solvent that is cooked off and a thick oil is left. Can this be smoked in a pen and which one would work best for this oil? Thanks so much.

  2. John
    January 13, 2015 at 8:30 pm

    which is better, v2 pro 3 series, atmos optimus v2, dr dabber ghost, or this?

    • Bud
      January 20, 2015 at 2:04 pm

      For concentrates I’d say it’s a toss up between this one and the ghost right now

  3. Unknown
    December 23, 2014 at 2:56 pm

    Vape critic,
    I watched you reviews for the Firefly, read a bunch of articles, and bought one. I am very happy with it. What I like most besides the great vaper, design, ease to us, it’s glow, is that it feel like your playing a flute.

    What I’m interested in now is your review of the Omicron Portable Oil Vaporizer (v2.5). A friend has been using a cheap pen that doesn’t work well. I read this review and have couple of questions. How often do you need to change the cratridge and the heating element? What other pens work well with oils.

    • Bud
      December 29, 2014 at 3:09 pm

      Hey very glad to hear you’re diggin the firefly

      The cartridge that I show in this review is actually one of their older ones and it holds a lot of oil, somewhere between 0.5g-1.0g, and each one should last a few hundred draws before needing to be replaced.

      They came out with new Kiss cartridges for this vape that are closer to what you see on other wax pens now, and it works really well.

      Right now one of my favorite pens for concentrates is the Dr Dabber Ghost:

  4. butch
    August 24, 2014 at 12:29 pm

    if a 2.4 ohm is an all around starter for cartridges, and the 1.5 is hotter and gives you more draw and vapor, what does the 5.0 ohm do as far as performance?

  5. china
    February 25, 2014 at 8:50 pm

    Bud, have you tried putting dry herbs in this pen?

    • Bud
      June 13, 2014 at 4:44 pm

      Hey the cartridges I have for it aren’t designed to work with herbs so I never tried it, but I have yet to hear about a pen that truly vaporizes dried herbs consistently.

  6. jony
    January 19, 2014 at 9:46 pm

    Oh , and i forget to ask how hot does the omicron get?

    • Bud
      January 23, 2014 at 4:07 pm

      On the outside? the part you hold stays cool but the cartridge itself gets pretty got during use.

  7. jony
    January 19, 2014 at 9:38 pm

    Hey bud, id lilke to ask if i can use oil with the plenty or the volcano and would also like to know how the cleaning works with this omicron vaporizer.

    • Bud
      January 23, 2014 at 4:07 pm

      Hey you can use concentrates in the Volcano and Plenty if you use the liquid pad thing they include, or you can mix a little in with your herbs, but you don’t want to use straight oil in the chamber by itself to avoid damaging the vapes.

      With the Omicron there’s really nothing to clean, you’re supposed to just throw out cartridges after you’ve filled them a few times and use new ones.

  8. OnceUGoWestUrDoneWithTheStress
    November 15, 2013 at 11:07 am

    hey Bud,

    I wanted to mention about a product called the FogPen. It sucks. When the unit is in one piece the airholes block each other. My mile high friend did not realize this before he loaded it up and tried to use it, now he is stuck with essentially an expensive paperweight. Ah well at least he is legit, unlike other people who have owed me $ for years despite having steady work.

    • Bud
      December 4, 2013 at 10:35 am

      Thanks for sharing your experience with it!

  9. GG
    November 15, 2013 at 1:15 am

    I have been searching for a portable vaporizer for the longest but cannot make up my mind. In your opinion what is the best pen to get? I need one for oil and waxes and have $100 to spend. Please help me out.

    • Bud
      November 25, 2013 at 9:46 am

      Hey I’m really not an expert with pens yet so it’s hard to say what would be the best. There’s so many models to choose from and they’re all so similar.

      If you haven’t seen this review yet check it out:

      I talk about a few different styles of pens I’ve tried and what the main differences are. Most of them have the same performance it’s just a matter of what type of material they work with.

  10. Nancy
    November 4, 2013 at 1:24 am

    I’m just learning about oil and wondering if this is the vape for that?

    • Bud
      November 25, 2013 at 9:37 am

      Hi Nancy yes this vape is designed for use with oils & concentrates that fully melt when heated and do not contain any residual plant matter.