Titrating the eBay Ozone Generator (Ozone Ep2)

[@ExtractionsAndIre]

discord.gg/VR6Fz9g This is the link to join the discord, come along and say hello!

[@franglish9265]

Perhaps you need to include a gas dessicator after the O2 generator, to improve yields when you're using pure oxygen?

[@filonin2]

@Anonymous Anonymous Probably just salt. Taste it!

[@alexanderd.7818]

You can get much higher yield of ozone through this reaction: 3 (NH4)2S2O8 + 6 HNO3 + 3 H2O -> 6 NH4NO3 + 6 H2SO4 + O3 Or you can add barium peroxide to concentrated H2SO4 on ice bath. It will generate enough ozone to oxidize anything as well.

[@NoraMadigan]

use a peristaltic pump

[@grahambins454]

Accidentally gets shipped a bag of cocaine. “I don’t bloody know what it is”

[@neshirst-ashuach1881]

Somewhere out there, someone is furious they only got shipped a bag of Iodide.

[@piranha031091]

14:50 : Seems like an aquarium air pump would be a better choice: they're piston pumps (flexible rubber piston actuated by a magnet and a coil), they have lower throughput volumes, but can handle much greater pressure difference between input and output than that centrifugal pump you're using. So, you could bubble through a much deeper water column (that's what they're designed for). They're pretty cheap too, about $15-20 for a rena one. And a great deal quieter! Also, since your generator is a corona discharge one, you should beware of nitrogen oxides in your output, they might ruin some reactions. You should be able to easily scrub them out by bubbling the output gas in some NaOH solution. So, making some ozonides next? ^^ Don't melt your lungs! (To be honest, I'm not entirely comfortable with the idea of that sort of equipment running out of a fumehood... Ozone exposure, wether acute, or chronic exposure to ppm levels, is a serious hazard. There''s quite the abundance of literature on the topic!)

[@nigeljohnson9820]

A fish tank pump would be a better choice, the ozone proof tubing is also available from aquatic suppliers. Both are designed for continuous use at a reasonable pressure. The pumps can be purchased to pump air into ponds at a depth of several metres.

[@piranha031091]

@@nigeljohnson9820 That's what I'm saying. "aquarium" = "fish tank" But I didn't know ozone-proof tubing was available from aquatic suppliers. Do you have any link for that?

[@nigeljohnson9820]

@@piranha031091 no I bought my supply from a local shop. It is blue in colour and very flexible. May be worth looking on Amazon. The system was designed to clean and sterilise pond water as it passed through a large filter. It can also be used to disinfect fish tanks as an alternative to potassium permanganate. A friend of mine, lives on a boat and collects rain water. He uses a combination of sand filter and ozone generator to make the water drinkable. Sodium thiosulfate was once sold as a fixer for black and white wet photography. It is also an alternative ingredient in the polysulphide explosive experiment.

[@ExtractionsAndIre]

So good news, I've bought a variable speed aquarium pump. I didn't know much about the different types of pumps but it makes sense now. I think we sacrifice a bit of flow rate for the ability to submerge the output much deeper in the solution (line pressure I'll call it) but that's a good trade off, I think we come out on top

[@ExtractionsAndIre]

Also yes, you make a good point about the toxicity. I think my next goal while I wait for the new pump is to try and package the system up so I can take it outside easily

[@GLITCH_-.-]

Can you make a video on how to identify unknown chemicals? In this case you have the perfect specimen!

[@jhyland87]

This is a great idea. Think he did this with a solution he found containing iodine, but yeah, i like those types of videos

[@AlphaFoxtrottMike]

Identifying unknown chemicals is literally my job

[@jhyland87]

@@AlphaFoxtrottMike Good to know :-P

[@jhyland87]

@@AlphaFoxtrottMike and i sont think he means using GCMS, which i have a feeling you have easy access too if thats your job :-P

[@AlphaFoxtrottMike]

J H I have GCMS, FTIR, Raman, draeger tubes, and various test kits to record ph, ki, burn test and smoke produced, and a whole box full of reagents that react in predictable color changes depending on what elements are present

[@TheChemicalWorkshop]

Learn electronics, it's very handy ! Also a video on identifing that unknown fake chemical should be fun...

[@user21XXL]

quick tip, it is difficult to measure temperature of shiny things (stick a piece of black tape)

[@terawattyear]

Excellent deduction to figure out why yields were so low. Working this logically with clearly labeled measurement recordings really helped. I enjoyed this. Congrats on getting O3 out of the device and knowing how much.

[@artimusgray9576]

I don't understand a thing you're doing but the pure unadulterated glee with which you're doing it makes me smile. :)

[@pyromen321]

Whenever my electronics are overheating, I just submerge them in a bucket of milk

[@ExtractionsAndIre]

Interesting. I usually lick them to cool them down

[@alllove1754]

Lol fuckk g lol

[@catch2297]

Beloved Quessia Rissanen difficult comment

[@paulaturpun6121]

The mist fans work better.

[@WorldofKlown]

aquarium pumps cheap designed, for working under water pressures and continuous use

[@ExtractionsAndIre]

I think that is a much better option

[@thumbsucker29]

Speaking of aquarium gear, I would suggest using an airstone (micro-porous) to bubble the ozone, creating much smaller bubbles and therefore greater surface area of the ozone to react.

[@niradnahguav]

@@ExtractionsAndIre ​ @thumbsucker29 My first thought as well, sorta. Ya gotta get that mass transfer, buddy! Especially with warm temps and open air vessel, you're getting very little O3 to dissolve. Try this on a microscale or maybe even in flow along with really efficient sparging like with the airstone or even try sonication in a closed vessel (but watch the pressure) and you'll get far better results. Also, since this was 2 years ago, I've seen these newer-looking ceramic plate devices that claim an even higher yield. I have seen these malfunction of course (poor connectivity through out the plate, sparks fly) but if they're better than this device, might be worth a try.

[@standardaussie]

What about a diffuser at the end of the ozone hose? Say like a fish tank air stone, to maximise the amount of bubbles therefore surface area of ozone in your solution?

[@fmdj]

2:15 6mm internal diameter transparent PTFE tubes are actually rather easy to bend. Problem is chemistry glassware usually wants 8mm inner diameter tubes which are almost rigid, BUT, a 8mm tube is normally the perfect size to fit a 6mm tube which has a 8mm outer diameter. It is a hell to fit the 8mm ID tubes to glassware but once you've done it once they will keep the shape more or less. So you can use small chunks of the big tube to make adapters for the small one and design the setup you need. When a connection doesn't seem secure enough, use a hose clamp to tighten it. You can make pretty useful and safe PTFE tubing networks this way.

[@roquri]

3 grams per hour. Just like a prius can go 120 miles per hour, if you throw it out of the back of a plane!

[@ExtractionsAndIre]

Correct!

[@alllove1754]

124.4343454 but whos arguing

[@ahabsbane]

As a network and security tech I fully appreciate your respect for labeling, and accuracy. Those are two very important things when you are responsible for the design, installation, testing, verification, training, and service of, a 2000 cable building. 👍 Always take care of the next guy, it's likely gonna be you!

[@74KU]

No No No, always keep your labeling as vague and secretive as possible. Keep all your notes private and to yourself. That way you KNOW the next guy will be you, nobody else can figure it out.. Job Security! (otherwise you set up a lovely system only to be shafted out for the peanuts/hour monkey that can follow your system.)

[@ahabsbane]

@@74KU and you're the reason people distrust contractors, thanks.

[@crytex991]

just watching you write on the chalkboard gives me shivers

[@SweMateo]

If you want to get good effect of the ozone generator there is many parameters to consider. You want the ozone to dissolve into the water as much as possible and bubbling large bubbles through the solution is not a good way. As small bubbles as possible to increase contact area is best. One of the most important factors is the solubility of ozone into the water. Ozone Solubility is dependent upon the temperature of water, concentration of ozone gas, and pressure of water. When ozone is dissolved in a liquid, Henry's law determines how much of the ozone is actually taken up in the water. Therefore a saturation ratio must be determined (volume of gas dissolved / volume of liquid). Based on the saturation ratio of ozone the solubility of ozone can be expressed as the following: CL = CG x S x P where: CL = dissolved concentration in liquid (mg/l) CG = gas concentration (g/m3) S = bunsen coefficient (solubility ratio), temperature dependent P = gas pressure (in atmospheres) Ozone solubility in water is highly temperature dependent. If the water is 40°C only 10% of the ozone can be taken up in the water. At 20°C 24% of the ozone can be taken up and at water temp of 0°C 64% of the ozone can be taken up in the water. This highly affects the outcome of a ozonolysis or titrating experiment. The input concentration of the ozone and the water pressure are also factors that have high impact on the results. Look here for some facts about this: www.oxidationtech.com/ozone/solubility.html

[@domcap70]

Ozone generators are used on pools and spas a lot.... Marketed at being a good sanitizer for the water. Totally worth it

[@AguaFluorida]

Hehe, I was literally only last night wondering when your next video would appear - after watching Nurd Rage's epic update. The Windows startup sound was hilarious for some reason. I'm looking forward to the "Identifying a Mystery Chemical" video already :D Watching your troubleshooting has been very helpful.

[@gamingmarcus]

While working with this setup have you ever experienced the effect of the Ozone? It's supposed to give terrible terrible headache even at very low concentrations.

[@DrGreenGiant]

Have a look on eBay for an aquarium CO2 diffuser. Really good for making small bubbles for high surface area. The glass and ceramic disc ones should be reasonably chemical resistant too?

[@djisydneyaustralia]

Go to bunnings and get LPG hose. Tools or BBQ section. Australian standard dictates that lpg hose must be Teflon lined so the propane can't permeate through the rubber wall. Much cheaper

[@johnmorrell3187]

I've just started watching this channel and I love it but this lab setup is giving me anxiety. The mess....

[@ExtractionsAndIre]

You're not wrong... it gives me anxiety tooo...

[@TheDexCrafter]

Iodate formation being a problem makes alot of sense actually, nitrate can oxidise iodine up to iodate (most abundant form of iodine in mineral deposits is as iodate in Chilean saltpetre mines)

[@pryonation]

Hey! Something that is really important when measuring the temp with a IR reader is that you need to adjust the EMS calibration pretty significantly when measuring stainless steel. When I measure hot stainless with my IR reader, it tends to be ~30-40C (60C vs 100C true) lower than what it really is, if the EMS value isn't adjusted

[@danz9211]

Are you aware that category of scale tends to under-measure for slow (especially dropwise) additions? I've owned several scales that are visually identical to that, and I need to make my additions off the scale then measure.

[@ExtractionsAndIre]

I'll keep that in mind, thanks!

[@BillM1960]

Is it possible that your air flow was too high for the O3 generator and you didn't have sufficient residence time in the generator to produce the as advertised amount of O3? I was always taught to use a drying tube or bottled air for 03 generators. I have used them in chemilumenescent analyzers and also had one on my saltwater reef tank.

[@pmckinlay653]

I used to be an electronics technician attached to a university chemistry department. Did some interesting work, saw some weird gear broken and made some interesting gear for out academics. The one that sticks in my mind having seen your PTFE tubing was some PTFE insulated cabling for a light fixture in a fume hood. Non-reactive, but very shit to work with.

[@mortlet5180]

How did you manage to accurately measure the temperature of the electrode assembly by pointing the thermometer at the reflective, metallic housing? Is it some kind of high IR emissivity alloy? Also, keep in mind that longer runs will tend to produce lower total Ozone concentrations, since the Ozone production process is less efficient at higher temperatures, whilst the Ozone decay process gets sped up at higher temperatures as well. Just make sure to keep these things in mind with those cheap Ozone kits: The electrodes are usually only coated very thinly in Platinum, or (extremely depressingly) not even coated in Platinum at all. (Proper Ozone generators use either Platinum-Iridium alloy electrodes or don't expose the electrodes to the gas stream at all, by insulating them with glass from the air.) If this is the case, you will have some unknown metal contamination in your reactions, which you need to keep in mind. Generating Ozone with electrical discharges in air, generates significant quantities of Nitrogen Oxides. Keep any side reactions this (and the respectively formed acids) may cause in mind. Usually, some of the materials in the Ozone stream aren't actually Ozone resistant and can generate gaseous and/or particulate breakdown products. The usual things they like to use, to look out for, include PVC, Polyesters (yes, really), Leaded Bronzes and Brasses, and also Galvanized Steel fittings and fasteners.

[@leocurious9919]

"How did you manage to accurately measure the temperature of the electrode assembly by pointing the thermometer at the reflective, metallic housing?" He simply didnt. Hes measuring whatever temperature the surrounding is at.

[@nigeljohnson9820]

How efficiently is the ozone being desolved in the solution? Might be worth using a fish tank air stone to produce much smaller bubbles. It might be worth putting the air outlet under deeper water, say in a measuring cylinder. What is the relationship between air flow and ozone gas generation? Does the heating of the apparatus decompose the ozone?

[@Sleepy_zzzzz]

TLFDI, totally legit five dollar iodide, I think that is a great acronym and phrase, and am going to use it.

[@CSGATI]

The air should be anhydrous (no water) been there did that i used a drier. Pure O2 also helps.

[@vojtechpesl4471]

What music is it at 16:54 - 17:30 ? Great video by the way :D

[@9034833838]

As someone who once has seen an ozone generator and done KI titrations, why first thoughts were Why is the gas going through ozonator not dry and compressed. Second thought was why no acidification with 6M Acetic acid for titration. They were quelled by the 19 minute mark but shabby work

[@michellesu1742]

(ignore) Other product formed, decreased the rate of intended production, also think about gas escaping and maintain pressure gradient for movement, used indicator, PLUS added acid to neutralise the product formed

[@adelinyoungmark1929]

Imagine that every crystalline solid chem thats OTC just comes in 1 large crystal of a specified weight and if you need a certain amount you just have to shave it from the crystal. Would be a hassle but at least your working with relatively pure chems.

Misread the title as "Trinitrating the eBay Ozone Generator"

[@benjaminpainter378]

Ah man this must have been a let down. Great video but if you compare it to your expectations it is pale in comparison

[@LongPeter]

The technical term for that fan/pump is a “horn”.

[@RaunienTheFirst]

Did you ever work out what the mystery chem was?

[@AureliusR]

70 degrees on the power supply is no big deal. As long as it stays below 100C or so, it'll be fine. Most semiconductors will self-regulate or shut off when they reach 120 degrees.

[@mackal598]

What sort of chemistry are you planning to do with the ozone generator?

[@JuliaMono]

And years later i am watching this video, being confused many times about the stuff stirring on the hot plate... it looks like it's a frog in a whirlpool.

[@wesleymccravy901]

You should have put a diffuser on the end of the hose to make bubbles tinier.

[@RGD2k]

Ran it without flow, and then blew his humid breath through it when he got it - probably the sharp electrode inside isn't so sharp any more. Try pulling it apart perhaps? Is there any corrosion inside?

[@gusbailey68]

Big bubbles = low surface/volume ratio; much of your O3 escaped to atmosphere without reacting. Consider a diffuser stone for gas/liquid interactions. (Stone is ceramic, but connector hose will suffer damage.)

[@randyjohnson3654]

They use o3 generators in some hot tubs because of the anti microbial properties apparently.

[@NOBOX7]

To much gas is escaping , you need re circulation and a larger or taller reaction coulomb

[@bakedroosterz4386]

Yeah that's what I was thinking as well 7 or better yet use electrolysis to generate pure oxygen maybe with the membrane Style and generally very rarely I come across them in the field in the few times I've been lucky enough tobe installing or doing preventive maintenance ozone generators for high school pool or YMCA or onetime for hospital HVAC there always vertical pre filtered with u v and 5 to 15% recirculated with a flow circulation in bottom out top.

[@bamkuet]

The starch is actually the indicator for I3(-) which is in an equilibrium with I(-)+I2

[@Arnthorg]

did you ever figure out what that chemical was?

[@--Valek--]

air stone?

[@Grak70]

Would love to see you use this to produce gyloxylic acid from maleic acid for example. Just remember you won’t get a 2:1 molar excess of product. The molozonide intermediate breaks down into formic acid, CO2, and only ONE mole of glyoxylic acid. But as a demonstrator reaction it has the added advantage of being gas forming with a very favored product equilibrium. The water and formic acid can be distilled out under moderate vacuum around 50C and the gyloxylic acid will form a goo that will eventually crystallize.

[@Grymtydeify]

is there a video on the unknown chemical?

[@science_and_anonymous]

Let's see the oxydation of piperine to piperonal via ozone

[@stefantrethan]

Infrared thermometer pointed at shiny metal pipe, much ire!

[@bfgoalie99]

hey an important detail to note in your titrations is that not all the ozone is reacting, making your numbers somewhat smaller than what is actually produced.

[@hoggif]

Aquarium bubling stones can be usefull for stuff like that. They make lots of very tiny bubles with lot more surface area. A lot more gas should be absorbed with many tiny bubles that low amount of huge bubles. A tip for the future.

[@Ubya_]

could you link me the seller where you bought the potassium iodide? i bought 100g of potassium iodide for 5,98$ as you did, but it turned out to be sodium chloride...

[@Ubya_]

uh now i see, you also got scamned hahahahaha

[@ExtractionsAndIre]

Yeah haha I haven't tested it yet, but lots of people.on ScienceMad bought it and it was NaCl so yeah, it's the same one

[@Ubya_]

@@ExtractionsAndIre yeah i knew of this "offer" for potassium iodide from there :')

[@ExtractionsAndIre]

We've all been played haha

[@Roll-Penut]

It's been 3 years, but maybe you still haven't remembered the term. It's "orders of magnitude"

[@terrance_huang]

When supplied with air, these discharge tube produces NOx(nitrogen oxides).

[@TeslaFactory]

Is the O3 generator designed to operate at higher pressure maybe? Higher O2 partial pressure, higher O3 yield?

[@TheBerko98]

What would happen if you modified the pump s air in socket with some dessicant silica filter

[@LFTRnow]

Try this: Replace air blower with fishtank pump, load bubbler stones on the end of the hose going into the test solution, next... As a minimum, dry the air first going into the pump (ive noticed most don't have clearly defined inputs, so that may be a challenge), dry using silica gel or one of the suggestions in comments. Finally, to measure side reactions and ensure NOx is not being produced (which wastes efficiency), run the output through water or dilute base (NaOH for example, dilute) - measure the pH or titrate it. NO will produce HNO2, NO2 will produce HNO3, both are showing the generator needs O2 input as the N2 is participating in the reaction and lowering output. There also may be a rating on the tube for how much O2/min is supposed to flow into it to give you optimum (3g/h) out. Finally, you can check pretty easily if you are losing O3 from your solutions, just have a (gentle) sniff. If you pulled out all the NOx, you should be left with N2, O2 and O3 - your nose detects it easily in very low concentrations.

[@LFTRnow]

I'd suggest a better approach then even that above would be to buy a cylinder of O2 (compressed) which is readily available for welding/brazing in home improvement stores, fashion an attachment to the (reversed) threads to get at the O2 output. Feed your now pure, dry O2 using a valve to limit the flow rate into your O2 generator. You can now skip the drying stage, pump, water/base stage to remove NOx, and can drop it right from the O2 generator into a hose will bubbling stone into your iodine test solution. Done.

[@LFTRnow]

I just saw part 3 (didn't know it existed) - covered most of this, but I still think even after seeing part 3: the water column was too short AND the flow rate too high - what little O2 turned to O3 probably a large part didn't react (that would explain 2g out of 3g disappearing when using O2 cylinder). The proper O2 cylinder is the more professional version of what I suggested with the oxygen brazing torch unit (well done). If using air, I still think the numbers are being confused by the added NOx reactions (which probably react with your iodine setup as well), oxidizing it and throwing off your numbers to make them HIGHER than they should be.

[@cobalt7530]

You should also try to put a drying tube filled with anhydrous CaCl2 road salt or silica gel kitty litter between your pump and the ozone generator to dry the air. That could greatly increase the amount of O3 generated if we go on your findings

[@braceharvey]

They have silica gel desiccant too, it's a little a little cheaper depending on where you buy it and it seems to work better for me than kitty litter. Also, I found out you can regenerate it in the microwave which is neat.

[@nunyabisnass1141]

Is that a bullet hole in the chalk board?

[@Rhodanide]

Wow, that yield is pretty oof. Have you ever thought of using compressed Oxygen straight from a bottle?

[@ExtractionsAndIre]

I think that's the next step. I think we can do better with some optimisation but for some applications I think an O2 bottle in the way to go

[@cobalt7530]

Maybe you could also try O2 made from the decomposition of H2O2 dried in a drying tube?

[@ExtractionsAndIre]

I don't think O2 is that expensive. For the large amounts of constant O2 needed for the generator, I think a cylinder would be best

[@braceharvey]

@@ExtractionsAndIre Maybe you could also make a closed system that recycles the unused Oxygen and passes it back through the Ozone generator. I haven't put much thought into it since it's 2am here currently, but I think it could be done fairly easily.

[@jogandsp]

If you don’t do some ozonolysis me and my old ochem professors will be very disappointed in you. I’d also be super interested to see you put a living, potted plant in an environment where it is exposed to the ozone either acutely or chronically.

[@ExtractionsAndIre]

Interesting about the plant idea... But is there any substrate in particular you want me to do ozonolysis on??

[@jogandsp]

@@ExtractionsAndIre I really don't care. I'm sure you'll think of something interesting

[@S730SD]

If the air pump conks out, there's always a balloon on a tube. That would have a higher O2 content then what you exhale.

[@michaelryabko885]

Bike pump as well

[@maxk4324]

Did you account for the various oxides of nitrogen that would also be generated since you were just using regular air? Would they not have affected the reaction or final yield rate at all?

[@noobpro9759]

Could we launch these into the atmosphere? Would they do anything?

[@Gaark]

could you use a wider water container so there is more volume for the gas to bubble through, maybe have a submerged watch glass to make the bubbles stay in the solution longer while being stirred too

[@ExtractionsAndIre]

That's a cool suggestion, id have to try and not smash that watch glass with the stirring too tho

[@RadioTrefoil]

The last time I tried to buy it back in 2011, potassium iodide was super expensive (about A$50 /100g). Good to hear it's come down, I've been meaning to get some more

[@RadioTrefoil]

Never mind, I just watched the rest of the video lol. Thought something was strange with that.

[@ExtractionsAndIre]

Yeah your suspicions were better than mine were!

[@ExtractionsAndIre]

Also good to see you around! Haven't heard from you in a while

[@LoremasterRelomi]

Ever figure out the mystery chemical?

[@ExtractionsAndIre]

Oh no, I still haven't done that!

[@allenflanagan9632]

I know I'm rather late to this, but I just wanted to share my thoughts. For the glass tube that is in the cup maybe you could add a few holes to percolate the air and disperse it better so that the size of the air bubbles is smaller leading to more surface area and therefore more contact with the solution. The other thought I had was that you could add like a humidity scrubber to the front of the pump so that it can better dry out the air. Calcium Carbonate is pretty good at absorbing moisture if I'm correct, although I wouldn't be too sure my knowledge of chemistry is rather weak.

[@shllmr]

scientific process in action...so satisfying. I could watch all day.

[@haroldsaxon1075]

Aquarium air pump and a CO2 diffuser will make a huge difference for percentage of reacted ozone

[@Mr.Degenerate]

Have you considered a higher input flow rate (better pump / pressure / piping) to potentially allow a greater ozone production?

[@KnifeChampion]

Bought a germicidal UV-C lamp once to combat mold in the bathroom only place i could put it was next to a towel so put some aluminium foil lampscreen around it like a lamp screen just in case to prevent the towel catching fire in 2-3 hours that lamp made enough Ozone to seep from the bathroom into my room and give me chemical burns in my eyes and everything looked milky like fog in my room according to the internet prolonged exposure can also cause organ damage, turns out that stuff's kinda dangerous the more you know

[@KnifeChampion]

My point was that a UV-C bulb produces lot of ozone its often used in chinese air "Ionizers"

[@GodlikeIridium]

Use a glas frit to get a better transfer from gas to solution.

[@excitedbox5705]

get an aquarium air stone to make smaller bubbles. since you now have an aquarium pump you can even use a bubble rod and you will get thousands of tiny bubbles.

[@icebluscorpion]

Simply Use the UVC lamp methode to produce O3 u will get more yield compared with the spark gap

[@someoneorother2758]

That's some suspiciously unknown white powder.

[@keissetje]

1:10 just like me when I just started working with my first voltage regulator for a bathroom ventilator to power my first weed growing operation.. Awww

[@chemistryscuriosities]

I am going to use a coronal plate ozone generator in a sealed container using a aquarium air pump.

[@benpye6854]

Potassium iodide on sale?

[@bromisovalum8417]

I've bought a similar Chinese ozone generator that claimed 7g/h. I can easily smell the ozone and the purple glow is nice too, btu I don't think it really is 7g/h. Would like to titrate, both using air and pure oxygen. PVC is pretty inert to ozone btw (to enclose the generator) BTW the tube (should) gets quite warm from the silent discharge.

[@idea-shack]

Can't periodate also form? Would periodate also form iodine upon acidification?

[@pietrotettamanti7239]

I know I'm 1 year late, but couldn't you have weighed a known amount of thiosulphate and mixed it with starch and iodide? That way you can turn on the ozone generator and see how much time it takes to burn through all the thiosulphate (when it turns blue) and get a good reading of the actual ozone output without much actual work. I know, sodium thiosulphate isn't exactly a good primary standard, but with +-.01g accuracy on your scale I guess that wouldn't make that much of a difference. You could also bubble the tail gas through another solution of iodine and starch to see if there's any ozone left in it. Maybe it wouldn't work but in my head it seems like a nice idea. EDIT: aw crap I forgot that thiosulphate titrations cannot be direct titrations, and the produced oxygen would react with the other thiosulphate. Might work with another reducing agent but at this point it's not worth it anymore.

[@KrogOfTurtlePeople]

could you hypothetically make the air pump suck instead

[@matthewmcdowell4588]

I thought that 5 dollars for 100grams of iodine was ify. It cast me like 40 dollars for 100 grams.

[@richardnanis]

you should have used a long cylinder to give the ozone more room to travel trough the solution. If you use this big cup there is not much way to travel for the ozone and it wont react much with the sulution. But thanks for the interesting measurement anyway. I believe it doesnt produce nearly what is advertised.

[@leon13noelspy]

i think a uvc lamp produces much more ozone than your generator but i could be wrong

[@franglish9265]

Lots of aquarium pumps?

[@bradleyelacombe]

Nice video. You could try this pump, I have one "VIVOSUN Air Pump 950 GPH 32W 60L/min" and maybe a tig welding flow regular. Thinking about it now the regulator my bog down the pump.

[@jhyland87]

I def would like to make an ozone generator as well!.... Absolutely _no_ idea what I would use it for... but its just a cool project. I like messing with Arduino and Raspberry Pi though, so I would nerd/tech the shit out of it.

[@franglish9265]

Perhaps the generator only produces depressing yields because it's for a domestic "deodorizing" application? Or, the ozone needs to dissolve in a much larger amount of water? What is the solubility of ozone in water? I was totally wrong, didn't even consider the periodate formation...

[@ExtractionsAndIre]

I suppose so. I doesn't need to be so good for that kind of application. But also, if it's only meant to be for that purpose, why quote a number that is only possible with an oxygen cylinder?? Noone is doing domestic cleaning and thinks 'ill just hook this bad boy up to my oxygen line'

[@cobalt7530]

@@ExtractionsAndIre Because those large numbers sound much better than 260mg/h and vendors only really care about selling as many products as possible

[@franglish9265]

@@ExtractionsAndIre obviously because they believe the air is 100% O2...

[@zachreyhelmberger894]

Fill a paper towel tube or a PVC tube with activated alumina or silica gel and dry your air before putting it into the ozonator. It should make the high voltage device run cooler as well. The humidity is increasing the current running through the device because moist air is more conductive. Also I am not sure of the details of how th edevice worksm but I suspect it is making much more NOx than ozone. So pure dry oxygen should make it much more effective.

[@zachreyhelmberger894]

You can measure the current going into the device using a clamp-om ammeter such as the UNI-T UT210E Digital Clamp Meter. It can measure both AC and DC current even down to the milliamp range.

[@zachreyhelmberger894]

And before you use the activated alumina or the silica gel, heat it up in an electric oven to about 300F for an hour or so to drive out all of the adsorbed moisture before using it for your experiment. And I would be willing to bet the dry air will draw less current.

[@GodlikeIridium]

Problem 1: Exactly, this cheap pump sucks and more immersion depht would help a lot. Problem 2: Bubbling huge bubbles through a few cm of solvent is a vdry bad extraction method. This has almost no contact between the gas and liquid phase. Exactly as gas scrubbers with a funnel who are pretty much useless. You need a glassfritt to produce tiny bubbles and way more contact area between the phases.

[@cybeermancom1]

Can you try a slower flow rate too? It may produce less pressure and mass but the concentration of ozone may be higher Edit: air intake througe sodium hydroxide?

[@bakedroosterz4386]

I would have maybe a ditch the air pump and went with electrolysis sealed container or better yet membrane style and use the pure oxygen it's generated to flow through the ozone generator.

[@BillM1960]

i believe silicone tubing would work and be cheaper than the viton. I've never used viton for anything but o-rings.

[@alllove1754]

That emotional release at 1:17 was a turn on. A sexy nerd of a young lady would agree.

[@juvnchy]

David Rissanen alllrriiighhtt you need to dip bro