Search results for query: hood

Oh I'm not wanting to build one, I'm wanting to buy one, just hoping someone can point me towards the most practical one for my usage.

1. Remove the risks with the process. Glasspipes (with water i suppose) can break and create a very unpleasant situation. Cool water, in hot sulfuric acid, is dangerous. Take your time and let it cool down between the batches. Old heatspreaders outside the vessel can help cooling down the acid...

Very simple method if you have a fume hood with exhaust connected to a water bath for absorbing nitrous fumes. 1 gm silver with 20 ml ( it can't be 1.2ml for sure) of 1.3 specific gravity nitric acid in a clear borosilicate glass bottle and heat just at around 80-90 dig C on a hot plate. Pure...

...start, everything I've seen is for acid fumes/refining/NOx/SO2, which typically involves bubbling the emissions into NaOH solutions, also H2O2, activated charcoal, etc. My lab fume hood is a good quality Labconco. I'm looking to ensure proper control of any gasses coming off of this depopulator.

Funny you mentioned it, I read all about it for an hour, went to the shop and every one of my 1-2.5L dishes are pyroceram this whole time (3weeks) that my hood has been down I could of been using them.

...palladium in HCL with chlorine gas. Then evaporate the solution, or crystallize it for higher purity. Using chlorine is dangerous, you need a working fume hood to do this. Also, PGMs are toxic and sensitizing in the long run, so proper safety like gloves, goggles, coat and fume hood is a...

Any advice on a DIY Fume Hood? I'm a pro at fabrication. I would want to buy the filtrationand ventilation system and fabricate the rest. Thanks for the advice. .

Plenty threads in here, even an entire section on building your own equipment.

That fume hood should have a vacuum system to pull the fumes away from you. We only die once, no second chances.

I'm operating out of a detached garage waaaay out in the desert south of Tucson. I'm a metalworker and silversmith by trade, but I have a chemistry background - I'm not just some rando. Nothing comes anywhere near the house. The reason I am not allowed to bring in nitric is that just last...

sorry mate I forgot to mention I have a good terrace and a backyard with enough space for a fume hood with trees around. so happy can get through fume hood for IC's.High airflow and ventilation are available for the process, and being too small I can't make more than 10 lb max,with this I think...

No need to filter the fumes. While nitric fumes are very deadly in an enclosed space, they dissipate quickly. If your fume hood vents out through your roof (20’+- agl) there’s nothing to worry about.

...right. They matter a lot in Chemistry. Like your statement: They use lead in sulphuric batteries, is because lead does not dissolve in sulphuric. Look up reactivity series and solubility charts. Try to understand that. Good to hear you're cautious with acids and are building a fume hood.

...clay graphite crucibles work. The graphite liners of high frequency induction furnaces will be eaten by the reaction. The circular circulating flame of a gas furnace spirals any smoke efficiently with the help of a length of extender duct pipe the smoke can be delivered well up into your hood.

I’m only working with scrap gold and silver jewelry and flatware

This cannot be overstressed. Most refiners have a good hood and scrubber and overlook their waste buckets. If you have open waste containers where spent acids sit, you need to keep the hood on or store them in closed containers. As far as scrubbing is concerned it depends on what you are...

What do chimneys and smelter stacks have in common, neither require electricity to operate, I believe a similar stack could be used to evacuate a fume hood. The mound leading up to the smelter stack is a tunnel from a lower elevation.

...challenging for me. On the plus side I feel there's nothing I can't learn. But I just don't excel at it. I'm also wanting to build my own fume hood but money is an issue right now and so buying one is out. And when building one has it's own costs. So let me know if you hear of any DIY simple...

Like orvi, I have no experience with manufactured hoods either. Because of my work area I had to make mine in place to fit where I wanted it. If you find a fume hood but it has metal hardware, you can possibly purchase plastic/Teflon replacement hardware. Using marine grade 5200 sealant over...

...(puller) is on the outside of my shop. All of my ducting is in negative pressure in operation, so if a duct develops a hole the fumes wouldn't get forced into the shop. Yep, my fume hood looks like a high school science project that got a "C-" for a grade......nothing fancy, it just gotta work.

Thanks for getting back, Yes, I'm very familiar with inquartation and the aqua regia method. However, nitric acid is not readily available here in Canada and is quite expensive. It is something I will look into in the future once I'm able to build a proper lab with a fume hood, etc. Thanks!

Wow, 7.5 kilos of non-magnetic MLCCs... Okay, went ahead and changed the price as the people have spoken :cool: If it sells, it sells. If not, I'll have more to play with when I get my fume hood. But for the component quality and work put into collecting them, I just cant consciously go lower.

yes it does remain and settle at the bottom

...and use ferrous sulphate to precipitate your gold , you will probably need to do this twice, be aware PGM salts are highly toxic so a fume hood gloves and care is needed, your waste solutions containing the Pt should be put into the stockpot with copper present to cement it out which then...

...clear. Yep I am even though I have failed many of the things are easier to understand now I have actually done it. I have to build a proper hood now as I have already eaten the wires in the fans in my first basic attempt which was simply to get started so I knew it wouldn't last. But yes...

...in preparation for safely trying to experiment, I took scrap lumber from pallets and junk piles to build a shed. I made myself a rookie Fume hood. I was lucky enough to find everything I needed from scrapping. Kinda proud of accomplishing it this summer. The only actual expense was the...

...are produced/created during the refining process? I'm refining gold filled scrap jewelry and designing an acid fume carbon filter for my fume hood. I will be running 500-600 grams of gold filled scrap per run. Here is what I'm using: Concentrated Nitric Acid 70% Solution (68 -70% HNO₃)...

...understand what's happening. I am on my third read of Ms Hokes book. Almost ready for the acquaintance experiments. I have a plan for a fume hood and scrubber that I want finished beforehand. I've been reading the safety section and the waste section and have also been studying online about...

No fume hood (yet). For now I'm working outside and at the whims of the weather, which is why it's taken me a few days to progress with this. Speaking of progress: Working under the assumption that the sludge was just a massive overdose of SMB, I took some of the cappuccino sludge, added water...