Take apart a Compact Fluorescent Bulb

Step 2 Take it Apart 2: Pry It Apart!

Now that you have a slot, you should be able to insert a flat-blade screwdriver. With a bit of a twist, the rest of the seam will separate (even if glued or welded.) (Hold on glass tube, or it may fall loose and hit something and break.)

(the dangerous (?) mercury is contained withing the glass tube portion, which is sealed entirely separately from the electronics section. As long as you don't break the glass, the mercury stays nicely sealed away...)

Comments

[laci37]

Mercury is very toxic, but its not so dangerous in small amounts like this if there is no strong airflow it stays near the ground.

[rcisneros]

True. Also it's not that much mercury. There are higher level of mercury it some fish.

[dawp]

I think some concern borders on hysteria and lack of common sense. If i should accidentally drop a fever thermometer (there i really dated myself) i don't think i would call the men in the space suits. The XEROX company tried to make a dental imaging machine based on xerographic principals. They found out that the residual mercury in the dentist's carpets "poisoned" the drum. The project was eventually dropped. The same also is said to hold true if somebody breaks a fluorescent tube in a room where a XEROX machine is installed. For us hoomons It is the mercury compounds that are dangerous and that is what accumulates in fish organs, etc. Mercuric chloride is a deadly poison. Years ago our chemistry teachers in high school would pass liquid mercury around the classroom. Now they fire a teacher if he even has a vial of the stuff.

[bricabracwizard]

Yes, I remember being allowed to roll it around on our hands - that's really going back some!! I'm almost 60 - phew!!

[DELETED_Noah feasey-kemp]

(removed by author or community request)

[laci37]

Mercury is dangerous if you work with it for years, becasue it won't leave the body

[xerxesx20]

That's right, it's an accumulative poison. The odd amount won't kill you though, the same can be said for radiation -- within reason Rumour has it that in the past it was used as to "cure" many ailments and made your teeth both translucent and green, wish I could remember where I read that.

[SKYNET 2.0]

People in the Victorian era put Thorium and other radioactive things into toothpaste and cosmetics, they thought that anything as energetic as radiation would have to be good for the body. Mmmmmm...Thorium.

[sml156]

Since we are on the subject of toxin's substances and unseen radiation has any ever done a study of the effects of WiFi `s . I think that someone should see if pumping all those 0``s and 1 `s into our environment have any ill effects

[BOOM5601]

The 0's are not a concern. It's the deadly 1's we gotta watch out for.

[xerxesx20]

Yes, indeedy. Watchfaces were often treated with tritium, the "tritium girls" as they were known (I think that's right anyways)(the lasses who applied it to the hands and faces of said watches) didn't live long and sometimes put it onto their hands or teeth as a practical joke. Mercury is still poisoning people today in one of OSRAM's facilities in China -- I read about this recently in the press -- though you can't always believe what you read!

[BOOM5601]

Tritium is a more fun isotope of hydrogen. Not only does i still go boom, it's also radio-active! And it was radium on the watch faces. They were tought to put the brush in their mouth to straighten it out for more delicate painting. Mmm, radium.

[rexmo]

it was not tritium, it was Radium.

[1BigKid]

I often wondered about the Tritium. The Night Sites on my work gun, a Sig Sauer p220, are manufactured by Trigicon and use Tritium as it's power source. They are encased in metal and what appears to a thick plastic dot (maybe glass) I don't know how long these sights have been in production or their intended shelf life but I was issued this firearm about 5 years ago and they still glow very brightly in low light situations! I suppose it is like everything else though, they sell it and say it is safe but 20 years later they will tell you it causes cancer or something! I know we strayed off topic a bit but it is interesting anyway. A true conversation piece of an Instructable!

[rexmo]

tritium is not nearly as dangerous as radium and has a much shorter half life

[barrywilliams]

Watch faces were treated with radium not tritium and they were "radium girls".

[xerxesx20]

Aye, thankyou. I realised my mistake after posting, it just didn't sound right if you know what I mean. :-) Hence.. radium jaw -- NOT tritium jaw. lol

[westfw]

Isn't there still thorium in gas lantern "mantels" ? And don't forget that lovely "uranium glass" and "Fiestaware" pottery containing uranium and produced up through the early 1970s... Of course, the resulting radiation poisoning wiped out the entire American upper middle class during that time period. So sad; they should have known better!

[SKYNET 2.0]

I remember the infamous fiesta ware. My grandmother kept a set in here bunker-like basement, on day my uncle took a Geiger counter down there to see if we had a radon problem, and the thing crackled away when he set it on the bow of fiesta wear. The offending box was promptly encased in concrete.

[SKYNET 2.0]

Her* not here

[xerxesx20]

Actually uranium glass may still be made, any radioactivity is contained within the glass. It occurs mostly in the green glasswares you see, though many other doping compounds (colourants) are used. As for flame-mantels (I know the ones you mean) i'm reasonably sure they aren't made any with thorium any more, though I could well be wrong, it wouldn't be the first time!

[Peeet]

Radioactivity is definitely NOT contained by glass. The uranium itself is but not the radioactivity. Danger from radioactivity is measured by 3 factors: level of dose, proximity and duration. Some old wrist watches had alarmingly high levels of radioactivity as tested by my scientist brother. This is of concern as proximity is obviously very close and duration of exposure is potentially very long. Old green transparent glass can be radioactive.

[xerxesx20]

Thanks for filling me in there! I suppose the level of (alpha is stopped by pretty much everything that's thicker than paper, so we'll un-complicate things and forget about alpha for now) gamma, or beta recieved depends upon the thickness of said insulating material also how long the person is within range/proximity to the not-very-well entombed source. Interesting that old watches and some glasswares are still radioactive, "uber" long half life I suppose -- difficult to decide how long the half life would be without knowing exactly what radioisotope of uranium it is. I have seen recently a boost in sales of a small transparent quartz/glass/plastic chamber that has a minute amount of tritium gas inside, a so-called "long life" light source without a switch. They are generally traded as keyrings, but are quite costly. £6-8. ($10-15) I was considering buying one, but I have to be careful of my money at the moment, Leadpumper is becoming rather in need of a good service/rebuild. So that's got most of my dosh for the minute!

[dawp]

Hi: Over 10 years ago i got a Mb Microtek watch. It had tritium numerals and hands. It glowed beautifully in the dark; try it in a cave when they turn out all the lights. The guides get mad about that:) In any case, i haven't died of radiation poisoning and it is still glowing in the dark, but not as bright as new. The half life of tritium is around 10 years. The only watch i know of that currently advertises these lights is in Cabela's catalog. I forget the exact name of it. People and regulatory agencies have a fear of the N word and it is generally difficult to get light capsules. In space they are called "Beta Lghts". I think they have also been used in nautical buoys.

[Peeet]

"i haven't died of radiation poisoning" I'm glad to hear it. There is always a chance that some people will be unaffected by general risks. The fact is that less exposure (which is determined by intensity, proximity & duration) to radiation equals less risk of cell mutation. It is not an irrational fear by regulatory bodies just to make life difficult for us. Some smokers live to ripe old ages, but the vast majority have health effects.

[DIY-Guy]

On the original thread:
Kudos to WestFW for a nice -ible on CFL parts.

On the divergent thread:
Tritium is fine IF it's encased safely. Watches with tritium hands have been designed to keep it inside. Regulatory agencies are not always driven by science but often are driven by public outcry and ignorance. Ask a n* physicist who works with those things and they'll tell you the gas lantern mantles and watch hands scare is pretty much just that, scare tactics. Moral- don't grind up any of those things and eat them.

What a great spelunking tool to bring on the tour, a watch face that won't stop glowing no matter how dark it is or how long it has been in the dark!

[westfw]

Don't forget that common potassium is radioactive too.

[xerxesx20]

Surely not all forms of it are? There's more than I thought: "There are 24 known isotopes of potassium." -- According to Wikipedia (I'm too tired for "proper" research. lol It's also got a Moh's hardness of just .4 ! Talc(um powder -- it's the same stuff at the end of the day, just smashed and crushed up.) is 1.

[laci37]

Common potassium(atomic weigth 39) is NOT radioactive. About the hardness of the alkali metals, they are very soft, I have cut sodium with a knife, and it's said that potassium is even softer. But aren't we a little off-topic?

[xerxesx20]

Thanks for that,and yup, off topic happens to be what makes the world go round. A little disorder is good for the soul, a lot like genuine Chinese chicken noodle soup. "A little nonsense now and then, is cherished by the wisest men..." :-)

[junits15]

u do realize that the amount of murcury in one of these is not nearly enough to kill you, it wont even make u feel sick

[tragical217]

 are you super sure? I just broke one and I'm freaking out

[junits15]

read below

[Peeet]

Not the point--heavy metal contamination is cumulative. It accumulates in the body. If you eat shark too many times a week it can be hazardous for the same reason--them being near the top of the food chain we get the end results of their build-up. There are a lot of hazardous inputs that won't make you feel sick immediately.

[junits15]

oh i didn't realize it was accumulitive

[OBar]

That is where they get the term, Mad as a Hatter, (yes Dawp, I dated myself too) 

 

[Stoday]

Get the mercury content into perspective:

Typical mercury content of CFL = 4mg.

Typical mercury content of amalgam tooth filling = 100mg

[Peeet]

This might not be a valid comparison as the amalgam is intended to lock up the mercury whereas these lights were never intended to be taken apart and played with. I am not convinced that it is safe to open these things. What if the mercury gets about the place and a baby ingests it someday, from the carpet or somewhere?

[DELETED_Noah feasey-kemp]

(removed by author or community request)

[The Lightning Stalker]

Here's how to get the wires out of the base: The center contact is just a blob of solder. Pull on the wire while heating the bottom and it pulls out when the solder melts. I use a burner on the stove because it's quicker than a soldering iron, unless you have a very big soldering iron. To get out the other wire, get a flat blade screwdriver and push down on it where it's attached to the inside of the outer contact. Down as in further down into the base. If you push hard enough it slips out and you're golden.