iQOS Update – What’s Inside A Heet

One of the most popular pages on this site is our review of Philip Morris’s innovative iQOS device. That’s not much of a surprise, because iQOS has probably had more publicity than any other Heat not Burn product and it’s also the most widely available. It’s steadily rolling out beyond the first test markets and can now be bought in the UK, Spain, the Netherlands and several other countries; before too long it will be available globally, and I think it’s going to be a huge success.

When Heat not Burn UK first tested the iQOS the only sticks that came with it were mild menthols. Those were not as satisfying as they could have been, but did prove the concept. Happily, during our visit to PMI’s research centre at Neuchatel a couple of months ago there was no shortage of them in all flavours, and I got the chance to try an iQOS with a full-strength stick. I’m happy to report that it was very close to the experience of smoking a Marlboro, and an excellent substitute in every way.

Sticky Stuff

Obviously, what made the difference between “Meh, this is okay” on the first iQOS test and “Wow!” on the second one was the sticks it was being fed with. That means it’s probably time to look at the sticks themselves in a bit more detail.

The baby cigarettes that go in the end of an iQOS were originally called HeatSticks, but they’ve now been rebranded as “Heets from Marlboro”. Currently Heets come in three flavours – Amber, which roughly equates to full-strength Marlboro Red; Yellow, a lighter Marlboro Gold; and Turquoise, the mild menthol version. As far as I can tell these all have the same nicotine content, and the only difference is in the flavour.

Anyway, I just called them baby cigarettes. They’re not. Yes, they look like baby cigarettes, and they come in a tiny pack of twenty, but you can’t stick them in your mouth and fire them up with your trusty Zippo. That just won’t work. Even if it did work it would be pretty pointless, because the whole idea is that you don’t burn the tobacco.

In fact there really isn’t a lot of tobacco in there to burn, anyway. Looking at a Heet, you can see that the filter seems to take up about three-quarters of its length:

There are quite a few bits in here.

Not Just Tobacco

It’s not quite this simple, but we’ll come back to that. What’s in the other quarter is the stuff that gets heated, and I’ve actually had the chance to watch it being made in the factory at Neuchatel. PMI made me promise not to put all their trade secrets on the internet, but I can tell you the basics. What they do is blend selected tobaccos to get the flavour they want, then grind them to a fine powder. This is then mixed with water and some other ingredients – vegetable glycerine to keep it moist and generate the vapour; natural cellulose fibres to bind it; and guar (a natural gum) to hold the whole lot together.

This liquid mixture is sprayed onto a conveyor belt, run through a dryer then peeled off in thin sheets. The brown stuff in the end of a Heet is those sheets, rolled up like tobacco leaves in a cigar. When you load a Heet into your iQOS a steel blade in the device cuts into the roll, and when the blade heats up it creates the vapour for you to inhale. That vapour is mostly VG, loaded with aromatic flavours from the tobacco – which is why iQOS can replicate the flavour of a cigarette in a way that e-cigs can never quite manage.

So what else is in a Heet? Well, it’s not just the filter. In fact the filter itself is very short, as you can see:

From left to right: The tobacco, hollow tube, PLA and filter.

The actual filter is even smaller than the plug of tobacco at the other end, and it’s really only there to give you the familiar feel of a cigarette filter. Because iQOS doesn’t produce all the harsh combustion compounds you get from a cigarette there’s no real need for much filtration, so it can be very short. In fact if it was much longer it would probably soak up a lot of the VG vapour that you want to inhale.

After the filter is a loose roll of PLA, a very stable, food-safe plastic material. This is what does the real work; it slows the vapour down without absorbing it, giving it time to cool to a more pleasant temperature before you inhale it. This takes up almost half the length of the entire Heet.

Between the PLA and the tobacco is a short length of hollow tube, made of a similar material to the filter. As far as I understand it this is mainly to keep the blade away from the PLA and give the vapour a clear path to start its journey through the Heet. Then finally, at the end, you’ll find that little plug of tobacco.

Small But Complicated

So a Heet might look like a cigarette, but inside it’s a bit more complicated. This, and the fact they’re so small, means they’re also trickier to make; PMI had to do some creative rebuilding of some old but reliable cigarette-making machines to come up with something that would make Heets.

All this effort has paid off, though. It might be tiny, but a Heet will give as many puffs as a full-size cigarette. If you get the strength that suits you those puffs are just as satisfying, too. I had a few lingering doubts about iQOS after my first experiment with it in Poland last year, but using an identical device with Amber Heets was a totally different experience.

What’s most exciting is that, while iQOS isn’t the first generation of this technology, it’s still at a relatively early stage; there’s a lot of potential for development in there. I’m increasingly sure that HnB products like this have a very bright future in front of them.

If you are looking for HEETS at a fantastic price

E-cigs don’t work everywhere – Heat not Burn does

I’m a freelance writer, and I love e-cigarettes. Since I switched to vaping my desk isn’t cluttered with smelly ashtrays anymore, and I don’t have to brush ash off my keyboard twice a day. I spend most of the day at my PC, so I can keep a charger on the desk for my batteries and there’s a nice long USB cable for pass-through mods. The top shelf in one side of the desk holds an assortment of e-liquids; in my job, vaping works perfectly.

On the other hand, before I became a writer I spent years in the British Army. Like many soldiers I smoked, and I remember a lot of early mornings happily puffing away in some cold, wet forest. No matter how soaked, frozen and miserable you get, a cigarette is a reliable way to inject some very welcome morale into your life.

The thing about cigarettes, of course, is that they couldn’t be simpler. You take one out the pack, stick the brown bit in your mouth and set fire to the other end. Unless you’ve let them get soaked, or you’ve sat on the packet and squashed them (a waterproof tobacco tin will avoid both these issues) they’re guaranteed to work.

War is hell – for e-cigs

But how is an e-cig going to cope with the hardships of a soldier’s life? All the liquid is probably going to leak out, turning the contents of your pocket into a slippery mess. The tank’s probably going to get broken the first time you trip over a stump in the darkness and fall flat on your face. The ability of most box mods to survive being soaked with rainwater is pretty dubious. Worst of all, your batteries aren’t going to last forever and there won’t be any USB ports in the tree you’re living under. E-cigarettes are great as long as you’re surrounded by civilisation, but they’re not going to work out in the field.

It isn’t just soldiers, either. What if your workplace is the deck of a trawler? The first wave that knocks you down, and leaves you flailing around in a pool of seawater and fish guts, is going to destroy every electronic device in your pockets. Let’s not even start thinking about rebuilding a coil in a cramped cabin that’s rolling through sixty degrees.

So it’s pretty obvious that there are some people who e-cigarettes just aren’t going to work for. But does that mean they’re doomed to a lifetime of smoking? Not so fast. There’s probably a heat not burn product that’s going to work just fine.

What’s the solution?

Last month I visited Philip Morris International’s research facility at Neuchatel in Switzerland, where they’re making the Heets that feed their iQOS device as well as working on the next generation of HnB technology. It was a very interesting visit – I’ve already discussed their latest research on safety – and left me feeling very optimistic about the future of heated tobacco products. There were some lively discussions, too, and during one of these I explained that I’d been a soldier for a long time and, based on my experiences, I didn’t think iQOS was going to be much use in the field. The PMI rep didn’t even blink. “We know,” she said. “That’s why we’re working on three other products.”

One of those products is the Mesh e-cigarette, which is already on the market. I have one, and it’s pretty good; the Mesh is an extremely simple and fairly sturdy gadget, and its disposable cartridges are more compact and probably a lot tougher than cigarettes, but if you’re doing hard work outdoors in bad weather it has the same drawbacks as any other e-cig; it isn’t very waterproof, and it needs charged a couple of times a day. Then there’s a completely different product in the development pipeline that isn’t HnB, but isn’t an e-cig either; it uses a chemical reaction to create a nicotine-containing vapour. The interesting thing about this is that it doesn’t need any batteries, so it might be a good solution for people who don’t have regular access to a charger; that depends on how robust it is, and I can’t comment on that because I haven’t seen one yet.

That’s three of PMI’s Smokefree nicotine products. The fourth one is a heat not burn product that uses the same concept as RJ Reynolds’s Revo. It’s a disposable item that contains a stick of processed tobacco and a charcoal pellet that provides the heat. All you have to do is light the pellet and puff away.

Revo isn’t really a new product; it’s basically a rebranded version of the 1990s Eclipse, which was a complete flop. Reynolds relaunched it under the new name because they decided the market had moved enough to make it viable this time around, but it’s still basically the same thing. I’m not very familiar with it but I do have some doubts about how effective it is.

So far, at least, those doubts don’t apply to the PMI product, which the company are currently calling Platform 2. It works on the same principle as the Revo, but it’s a completely new design. That gives PMI a chance to iron out any bugs, and hopefully come up with something that delivers a consistent vape with no risk of accidentally burning the tobacco.

Keeping it simple

The benefits of this sort of design are obvious. If you can manage to smoke, you can use a HnB product like Revo or Platform 2. It works exactly like a cigarette; you just have to take it out the pack, put it in your mouth and light it. There’s nothing fiddly to play with, it doesn’t need electricity and it’s no more vulnerable to the weather than a cigarette. In fact it’s probably less likely to get damaged by water; Revo has a metal foil tube to hold the tobacco, which is a lot more waterproof than cigarette paper.

A lot of smokers have switched to vaping – probably over ten million by now – but it’s not going to work for everyone. Improved technology will eventually increase battery life and make the hardware easier to use and more robust, but it’s not likely e-cigs will ever be as simple as a traditional cigarette. Heat not burn has the potential to solve that problem, because the basic principle – get some tobacco and heat it – is a lot more flexible. Inside a few years there will be HnB products that anyone can use, no matter how tough their job is.


BAT’s glo – sneak preview

A couple of months ago we looked at BAT’s glo, their stick-fed iQOS rival that’s currently being trialled in Japan. It still hasn’t been released in other markets, and BAT haven’t revealed their plans for it yet, so it could be a while before smokers in the UK have a chance to try it. Just so you know what you’re waiting for, however, Heat Not Burn UK set out to track one down. It was a struggle, but last week one of our agents finally managed to get his hands on the elusive device.

Because of how our glo was obtained (no, we didn’t steal it) it didn’t come in its usual retail packaging, so that won’t be included in this review. It did come with a full pack of Bright Tobacco sticks to feed it with, so it was thoroughly tested as well as being poked, prodded and generally fiddled with. So what’s it like?

The device

The Glo is a neat, simple device. The silver oval on top slides to reveal the NeoStik socket.

The glo device looks like a small, simple box mod e-cigarette. It’s about the height and thickness of a pack of cigarettes, and maybe two-thirds of the width. The aluminium body is rounded on both sides, making it comfortable to hold, and it’s not too heavy. It does feel solid and well made, and the build quality looks excellent. The end caps are textured plastic, the metal body has a nice satin finish and there’s a laser-etched glo logo on the front.

Looking at the top, there’s an oval silver cover. On the bottom is a micro-USB charging port and a small cover that looks like it should open, but was left well alone in case it broke. After some discussion we think that’s the airflow vent; there has to be some place for air to flow into the heating chamber so you can inhale the vapour, and we couldn’t see anything else that might do that job.

The only actual control on the glo is a single button on the front. Its placement looks odd if you’re used to e-cigs; most box mods now have the fire button on one side, because that way it falls naturally under your thumb. However the glo’s button is just the on/off switch, and you won’t need to touch it when you’re actually using the device. The button itself is metal and surrounded by a ring of translucent plastic, which turns out to be LED-illuminated – but we’ll get to that.

The Tobacco

Like the iQOS, glo uses cigarette-like sticks which BAT call NeoStiks. Compared to PMI’s HeatSticks these are longer and slimmer – almost exactly the same size as a traditional cigarette. Instead of a filter there’s a hollow plastic tube, which makes sense – why fit a filter when there’s no smoke? The centre of the stick is filled with finely shredded tobacco. Actually it looks like the bottom is, too, but BAT say that’s not tobacco. It could be shredded cork or something similar.

In Japan the NeoStiks are priced about the same as normal cigarettes, as are iQOS HeatSticks. Industry gossip suggests the reason for this is that nobody’s quite sure how they’ll be taxed yet, so BAT and PMI are both playing it safe. If they end up being taxed at a lower rate the price may fall in the future.

Some of the stuff inside is tobacco. Some, according to BAT, isn’t.

How does it work?

Using the glo is very simple. The cover on top slides to one side, revealing a hole about the size of a cigarette. All you have to do is insert a NeoStik into this hole until it won’t go any further. This is quite simple, like the iQOS, as long as you don’t rush it.

Once the stick is fully inserted all you have to do is press the button to turn the glo on, then wait for it to warm up. Progress can be tracked by watching the surround on the button; this progressively lights up as the coil temperature rises, the glow of the LEDs advancing clockwise wound the circle, and when the whole thing is illuminated it’s ready to go. Just in case you miss that the glo will also vibrate with a faint buzz when it reaches operating temperature. Then all you have to do is take a puff.

So the big question is, what’s it like? The answer is that it’s very good. Our agent was lucky enough to try the iQOS and glo together, and thinks the glo is just as good at producing vapour and has a slightly better taste. This was a bit surprising, as it runs at a much lower temperature – 240°C, rather than 350°C for its PMI competitor.

Each stick gives about as many puffs as a traditional cigarette, and when the glo decides you’ve fully vaped it, the device will vibrate again and turn itself off. This seems to be aimed at making sure you don’t overheat the tobacco to the point where it starts producing nasties.

Looking at the used stick was interesting. The heat seems to be applied in a narrow ring, just below the end of the plastic tube. It’s hard to say how much of the tobacco is being affected by it. On the other hand it doesn’t matter much, because whatever the glo is doing, it works.


The overall concept of glo is very similar to the iQOS, but BAT have taken a different approach to the hardware. Our first impression is that this has paid off. Battery life is much better than the PMI device – although it’s hard to say yet if it lives up to BAT’s claims of a 30-stick life between charges, because we didn’t get that many sticks. The downside is that the device itself is much bulkier, and unlike iQOS you certainly can’t hold it like a traditional cigarette.

It does seem to do the job, though. There’s a satisfying amount of vapour and the taste is very good. The device itself is simple and well made, and disposing of used sticks is a lot less messy than emptying an ashtray. This is a very interesting product, and if it’s released in the UK we think it has a lot of potential.

glo from BAT – iQOS’s latest rival

Philip Morris have been watching the Japanese tobacco market with interest, and probably quite a lot of satisfaction, this year. Japan was the first major test market for their iQOS heat not burn product, and it’s performed remarkably well. In September 2015 the HeatSticks it uses to create vapour accounted for 0.7% of the country’s cigarette sales; twelve months later that had risen to 5.2%. PMI say that around a million Japanese smokers have switched from traditional cigarettes to iQOS, and that 70% of people who’ve tried the device have fully switched.

Now the iQOS could have a fight on its hands, as British American Tobacco prepare to launch a rival product in mid-December. BAT are already testing a hybrid e-cigarette/HnB product, the iFuse, in Romania (I’ve tried it, and will write about it soon) but this new one is going to be exclusive to Japan for a while.

Japan is an interesting market for HnB products. Strict rules on nicotine-containing liquids mean that e-cigarettes, which the tech-happy Japanese would be expected to enjoy, are still rare. That means the only real competition for HnB is traditional cigarettes, so it’s the perfect place to see how many smokers are willing to switch. For BAT there’s a bonus; they also get to see how their new device performs against the already-established iQOS.

glo-ing with satisfaction?

So anyway, let’s look at BAT’s latest product. It’s called glo, and the concept is very similar to iQOS. The device itself is a bit different, and as expected there are positive and negative aspects to those differences. Overall, however, it looks pretty interesting.

Like iQOS, glo is fed with cigarette-like tubes which are inserted into the unit and heated. These have a filter on top of a stick of reconstituted tobacco, which probably also has some propylene glycol and other additives to help generate vapour. BAT are calling them Neostiks, and say each one should last about as long as a regular cigarette – a dozen puffs or so. As far as pricing goes they also cost about the same as cigarettes; in Japan a pack of 20 Neostiks will sell for 420 Yen, which is roughly the same as a pack of BAT’s Kent king size.

When glo launches there will be three Neostik flavours available: Bright Tobacco, Intensely Fresh (a menthol blend) and Fresh Mix, which has a less dominant menthol flavour. They’ll all carry the Kent brand initially – it’s one of the leading brands among Japanese smokers – but if it rolls out globally expect to see differently branded sticks and possibly a wider range of flavours.

Like iQOS, but more so

As for the actual device, it follows the basic iQOS system – insert a Neostik into the top, turn it on, wait for it to heat up then puff away as normal. Visually it’s very different, though. Where iQOS is a pen-style device, glo looks more like a small box mod. The case has an oval profile and is very uncluttered; there’s a laser-etched logo and a ring-shaped LED indicator on the front, and on top a large button and the socket for the Neostik. BAT say they aimed for the simplest interface they could manage, and the single button controls everything on the glo. That’s actually not too hard, because like iQOS – and unlike a box mod – there aren’t a lot of settings to manage. Basically all you have to do is turn it on and off.

So why have BAT gone for this larger format? PMI deliberately made iQOS as small and slim as possible, to keep it as close as they could to the size and weight of a traditional cigarette. There’s a down side to that, though – battery life. The iQOS handset simply doesn’t have enough space for a lot of power storage, and a full charge will be mostly used up in vaping a single HeatStick. It does come in a portable charging case that can recharge the handset on the go, but there’s an enforced break of about ten minutes between HeatSticks while it tops up.

By going with the box mod style, BAT have given themselves a lot more space for batteries – and it shows. They claim that a fully charged glo holds enough power to vape over 30 Neostiks. If that holds up in real-world use it means a single charge should last most smokers a full day, which makes it a lot more practical.

Gambling on power

So there are real advantages in the glo’s bulkier dimensions, but it’s definitely a gamble on BAT’s part. It’s likely they’re hoping that smokers will value the extended battery life enough to use a device that’s less familiar in shape (and a good bit heavier) than iQOS. One advantage of them both being tested in Japan is that they can compete head to head; apart from the size they’re similar enough in concept to make for a fair comparison.

There is one other difference between the two, which is that glo heats its tobacco sticks to a significantly lower temperature. iQOS runs at around 350°C, while glo reaches 240°C. The lower temperature is likely to mean fewer toxicants in the vapour, but the big question is what impact it has on the user experience. If the vape itself is less satisfying that’s going to count against it.

BAT say that lab tests show that glo vapour eliminates around 90% of the toxicants found in cigarette smoke, although they’re being careful not to make any health claims right now. They are emphasising that it’s less messy than smoking and doesn’t leave a strong smell on clothes. As far as price goes, the glo handset will sell for around 8,000 yen, which is about $77. That makes it roughly 20% cheaper than iQOS in Japan. If glo rolls out in the UK it will be interesting to see how it’s priced, because iQOS is currently selling for £45. If the same price difference carries across that will put it at about £36. Of course the real cost of these systems is in the tobacco sticks, which aren’t much cheaper than traditional cigarettes.

Overall glo looks like an interesting device. Anyone who’s used a box mod is unlikely to be bothered by its size and shape, so the real question is how smokers will take to it – and, of course, what the actual vapour is like. BAT have invested heavily in it, though, so it’s probably safe to assume their consumer trials have been positive. Hopefully UK smokers will soon get a chance to try it, too.

Big Tobacco and Heat not Burn – friend or foe?

Right now the big tobacco companies are major players in the Heat not Burn market. Apart from loose-leaf vaporisers like the PAX series, all the products that are set to go global this year are produced by cigarette manufacturers. At first glance that makes sense; after all they already sell tobacco products, and HnB is a logical addition to their range.

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Does a good vaporiser have to be expensive?

Unless you live in one of the markets where the tobacco companies are trialling their Heat not Burn products, the best way to start vaporising tobacco right now is to get yourself something like the PAX 2. These devices aren’t cheap though, so it’s natural that many people would like to see something cheaper. It’s just as natural that there are cheap alternatives on the market, many of them made in China.

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Ploom TECH – A new look for HnB pods

We recently looked at the PAX 2 loose tobacco vaporiser by Ploom. This is a popular device, but the company’s original product used proprietary tobacco cartridges. That technology was bought by Japan Tobacco, who’ve now refined the design and brought out a new model – Ploom TECH.

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Heat not Burn and e-cigs – what’s the link?

It’s been said a few times that the amazing rise of e-cigs is what’s opened the way for Heat not Burn technology. The concept has been tried before, and failed every time – but not because there was anything wrong with it. The idea was just too different, and most smokers were happy enough with what they had. If you wanted to inhale nicotine you lit a cigarette – it was that simple.

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Loose leaf vaporisers – the PAX 2 by Ploom

Heat not Burn products often get compared to electronic cigarettes, and in many ways it’s a good comparison. After all they’re both alternatives to smoking that work by letting users inhale a flavoured vapour instead of actual smoke. There are some differences though. All e-cigarettes work in the same way; they have a battery, heating coil and liquid reservoir. The shape and size of the parts might vary, but they all have the same basic parts – even the disposable cartomisers that some models use contain the coil and liquid.

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Heat not Burn – Can it help you quit smoking?

The technology that goes into a Heat not Burn device is interesting, and so is the history behind them. It’s easy to forget about why they were developed in the first place, though. Heat not Burn exists because cigarettes are dangerous – but people smoke them anyway. The whole idea behind the technology is to offer smokers an alternative, one that will simulate smoking but without the actual smoke.

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A history of Heat not Burn

Heat not Burn, or HnB, is being hailed as the latest alternative to smoking. A range of new products are already on the market; more are in consumer trials and should be rolled out soon. By keeping the flavour and nicotine content of real tobacco, but taking away the toxic substances created by burning it, the aim is to keep the pleasure of smoking but eliminate most of the risk. The tobacco companies believe the popularity of e-cigarettes have opened the door; suddenly, for the first time, long-term smokers are willing to try new ways to get their nicotine. It hasn’t always been like this.

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How Heat not Burn works

How do you Heat without Burning?

Heat not Burn (HnB) devices are the next thing in alternatives to smoking. They’re not a new idea, and previous attempts to bring them to market have flopped. In the last few years e-cigarettes have become popular, though, and that’s raised hopes that smokers might be ready to give HnB another try. If you’re still a smoker, and you’re tempted by the idea of a safer alternative but e-cigs don’t quite do it for you, here’s a quick guide to how the new products work.

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