Commercial characteristics
- Sponsor who loaned the product for the review: VapExperience (http://www.vapexperience.com/atomisers-reconstructibles/331-billow-rta-ehpro.html)
- Price of the tested product: 39.90 Euros
- Product category according to its selling price: Mid-range (from 36 to 70 euros)
- Atomizer type: Reconstructable compression
- Number of resistances allowed: 2
- Resistor Type: Rebuildable Micro coil
- Type of wicks supported: Silica, Cotton, Ekowool
- Quantity in milliliters announced by the manufacturer: 5
Reviewer comments on business characteristics
A mid-range atomizer with a sleek look highlighted through a large solid-looking pyrex with a thickness of 2mm.
There is also a Nano kit which reduces the size of this Billow, by 10mm. Also available at “VapExperience” at a price of 9.90 euros
Physical characteristics and felt quality
- Width or Diameter of the product in mms: 22
- Length or height of the product in mms as it is sold, but without its drip tip if it is present, and regardless of the length of the connection: 54
- Weight in grams of the product as sold, with its drip tip if it is present: 1
- Material composing the product: Stainless steel, Pyrex
- Form Factor Type: Kayfun / Russian
- Number of component parts without screws and washers: 4
- Number of threads: 2
- Quality of the threads: Good
- Number of O-rings, Dript-Tip excluded: 3
- Quality of O-rings present: Very good
- O-Ring Positions: Drip-Tip Connection, Top Cap - Tank, Bottom Cap - Tank
- Capacity in milliliters actually usable: 4.5
- Overall, do you appreciate the quality of manufacture of this product with regard to its price? Yes
Rating of the vapelier as to feelings quality: 4 / 5 
Reviewer's comments on physical characteristics and perceived quality
The number of Seals, threads and parts are relatively small, making it an easy-to-use atomizer.
Correct quality threads, a 510 pin adjustable by a copper screw for better conductivity, make this product a reconstructable “double coil” which should be appreciated.
Functional features
- Connection type: 510
- Adjustable positive stud? Yes, through an adjustment by thread, the assembly will be flush in all cases
- Presence of air flow regulation? Yes, and variable
- Diameter in mms maximum of the air regulation possible: 5
- Minimum diameter in mms of the air regulation possible: 0.1
- Positioning of the air regulation: Positioning of the air regulation adjustable effectively
- Spray chamber type: Chimney type
- Heat dissipation of the product: Normal
Reviewer's comments on functional features
Two air flow of max diameter 2,5 each and yet I have the impression that it is a little more airy than the numbers say it.
These air flows are independently adjustable by two screws under the base of the atomizer and are effective.
Under the resistors, we see that the air flows come out of the plate, which limits the risks of liquid clogging in the atomizer and therefore leaks.
The chimney is a single part, so be careful not to block the bits that will be installed in the large channels.
Drip-Tip Features
- Drip tip type: 510 Only
- Presence of a Drip-Tip? Yes, the vaper can immediately use the product
- Length and type of drip-tip present: Medium
- Quality of the present drip-tip: Good
Reviewer's comments on the Drip-Tip
A simple drip tip, matching the top cap with the same ridges on its base as the atomizer it accompanies, the whole is in stainless steel.
Evaluation of the packaging
- Presence of a box accompanying the product: Yes
- Would you say that the packaging is up to the price of the product? Can do better
- Presence of a user manual? No
- Is the manual understandable for a non-English speaker? No
- Does the manual explain ALL features? No
Vapelier's note on packaging: 3.5 / 5 
Reviewer's comments on conditioning
The packaging is simple, it lacks an explanatory note for the various settings.
Appreciations in use
- Transport facilities with the mod of the test configuration: Nothing helps, requires a shoulder bag
- Disassembly and cleaning facilities: Easy but requires a workspace
- Filling facilities: Easy but requires a workspace
- Easy to change coils: Easy but requires emptying the atomizer
- Is it possible to use this product throughout the day with several vials of EJuice? Yes perfectly
- Have there been any leaks after a day of use? Yes
- In the event of leaks during tests, descriptions of the situations in which they occurred
Two types of leaks occurred during my tests.
- The first just after filling and only if I fill too quickly. Because the liquid slowly descends when filling between the pyrex and the base of the chimney. But a slight leak (two drops) which does not persist, as soon as the priming is done. So when filling, it is better to use a fine syringe needle, and to go gradually.
- The second leak is produced, because I had not inserted my wicks in the channels which are on the base of the atomizer.
Once the assembly redone by inserting the wicks in the cavities, these leaks stopped.
Vapelier's note on ease of use: 2.1 / 5 
Reviewer's comments on the use of the product
A small long filling that requires the tip of a syringe.
But the assembly of the resistors is relatively simple with a dedicated screw for each leg.
However, you will have to shift each of your resistors so that they are just below the air flow.
Recommendations for use
- With which type of mod is it advisable to use this product? Electronics AND Mechanics
- Which mod model is it recommended to use this product with? A 22mm diameter box or mod to be flushed
- With which type of EJuice is it advisable to use this product? All liquids without problem
- Description of the test configuration used: on a DNA 30 electronic box, with a variation of 12 to 30Watts for tests
- Description of the ideal configuration with this product: A double coil of 0.7 Ω and a correct power of 20 Watts for the assembly. And associated with a 22mm SS box or mod for aesthetics
was the product liked by the reviewer: Yes
Overall average of the Vapelier for this product: 3.7 / 5 
Link to a video review or blog maintained by the reviewer author of the review
The mood ticket of the reviewer
The Ehpro Billow is a beautiful atomizer very visually refined.
The assembly is relatively simple to do since it is equipped with four screws dedicated to each past of the resistors.
The adjustable air flow acts effectively and it is an atomizer that allows a good ventilation of the whole. It is obvious that for those who prefer the subohm around 0.3 ohm with a big suction, this atomizer will be a bit fair, but around 0.8 ohm you will find a perfectly correct vape. I did not find it hot and the flavors are well restored.
There is a "Nano" kit which reduces the size of the billow by 10mm, so your atomizer immediately takes on a more compact appearance which will ideally adapt to the format of mods in 18350. The price of the kit is 9.90 euros on our website. sponsor, Vapexperience.
The two most important manipulations to respect on this atomizer, are the filling which must be done slowly with a needle, and especially not to put the wicks on the plate during assembly (but rather in the channels of its base), so as not to not risk leaks and gurgles.
I regret the noise that this atomizer does during the suction but it's still an atomizer that I like a lot and that adapts to many mod models.
Looking forward to reading you.
Sylvie. I
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