Search results for query: hood

...the issues. I know what you mean about the whole fire department. Back in school I was using some mercaptans with no hypochlorite trap. Perhaps 5-10 mL in the hood. They thought there was a gas leak at the local newspaper and that was a mile away. Whoops! I was NOT a competent organic chemist.

I just leave everything in my hood and close up the doors. I generally don't have any issues with fumes (I guess it'll depend on your design). I do turn on the fan prior to cracking open the door. I use one of those Ikea type book shelve (for Lowes) that you have to put together, Just trimmed...

...thoughts on your latest picture post? A piece of Quartz you spray painted with either Aluminum, or Chrome paint. Yup, you fooled us all , once again, with your super rare mineral specimens. Remember to paint either in a fume hood, or outside. Those MEK fumes will turn you into a real phsycho...

Yeah, to the certain point. Thy disperse quickly, but downside is they can be smelled in very low concentrations :) and thus dragging unwanted attention.

...Pb (lead) at 365 from the XRF is less than 1% in this machine's settings. we use PbO (litharge) to do fire assays at the mine, we have a fume hood, gloves and mask, I do understand the safty issues. I haven't studied up on sodium cyanide, I know I can buy it, but the concentrations and...

I think it’s a good use of a plastic closed container. If it works it’s rarely stupid. Though this is the internet, some people will argue stupid just for the sake of it.

I have access to hydrogen cylinder, so maybe this will be viable method. If I get it correctly, I drop the palladium salt, filter it, suspend in water or so - and bubble hydrogen through ? Is pH critical during this transformation ? How badly palladium powder obtained by this method burn in the...

...in AR oxidize bromides to elemental bromine, which not only look scary (red heavy clouds, from the beaker they tend to fall to the bottom of the hood), but also wreck about every material old fume hoods were constructed from. Low boiling point makes this even bigger "disaster". Unrusting...

Did you read the thread about building your own fume hood? It is shown there. You have a vacuum system based on an eductor, it sucks the fumes from an upside down funnel big enough to fit on the beaker used for the AR. Then there is a hose connected to the funnel which leads the fumes into a...

Slimes dissolves easy as it is very fine powders. Melting it will give losses, every time you process a feedstock it will give some losses. The amount depends on process efficiency lot size and so on. The amount of slimes from a batch will not be much comparing to the material you run through...

Back to your fume issue. I had a similar experience and learning from some of the threads here that sulfur dioxide can be more harmful than cyanide, I added a make-up fan to my lab and added a fume ventilation system to my waste treatment buckets and stock pots. This made all the difference in...

THIS^^^^ This is EXACTLY what happened to me during a much larger reaction than I usually do, at least it was not in my house.. The situation was "CODE RED" and it taught me a very valuable lesson; have contingency plans worked out well in advance, and contingencies on top of contingencies. When...

...run it through Nitric, or is it AR? Nitric will not dissolve Pt/Ir it will dissolve Pt/Pd. What kind of facilities do you have? Proper fume hood, protection suit and so on? If not, DO NOT dissolve PGMs, their salts are toxic and accumulative. This alloy is sell able as is, actually probably...

Search fro fume hoods in the Library. Here is more material to study: We ask our new members to do 3 things. 1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction to the most important chemistry regarding refining. It is free here on the forum: Screen Readable...

...OK for the exhaust - cheap, flexible, non-flammable, nice resistance to NOx and Cl2 gasses, easily replacable if needed. Chassis of the hood, I seen built from the plastic/sawdust composite "timbers" (which are relatively nice as they usually contain fire retardants) bolted with plastic...

I have had a PM session with him, these come from military transformers for tropical use. So I can in this setting understand the reasoning for the plating. He also forgot to mention that had dissolved some in Nitric for testing.

A good number of professional refiners designate a corner of their building for acid refining. They have hoods and scrubbers which run whenever a reaction is under way. The rest of the shop has plenty of metal objects which occasionally need attention for rust but IF they keep to the covered...

...For distilled water i'd look into a osmosis system and start it up properly Not sure you'll use much electricity unless you perhaps have a fume hood, most consumables aren't to be thought of. You shouldn't think of plated jewelry unless you get it perhaps for free or really cheap, you will...

Excellent info! Much appreciated, good sir.

...+ H2 SO2 + 3H2 -> H2S + 2H2O This secondary reaction produces some hydrogen sulfide gas, and needs to be done outside or in a fume hood - which you should already be doing, as the original liquid contained dissolved sulfur dioxide gas. 2.) Decant and filter Zn-precipitated solids...

:eek: I resemble that remark 🤣 Kurt

His post says I’m his unattached garage… You have to read things properly!! I’m only pulling your leg. It was to good to pass up.

Welcome to us! You have started your journey a bit backwards since you have a couple of posts already. There is plenty to study and read in here. This is to get you started: We ask our new members to do 3 things. 1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction...

...Good glass ware, the proper thermometer, competent operator, and the other requirements for a distillation in a lab, under a scrubbed fume hood, is something a lot of our members can't afford. Despite it being a cheap health insurance policy. This is why I suggested the time tested Chamois...

Those kits are just poormans AR. You willl need a heat source such as a hot plate, along with good glassware. A fume-hood would be a plus. Pretty straight forward except for the urea, as mentioned. It would be helpful, especially to future generations, if the assistance your asking for was kept...

Roger that. Time to break out the ol equipment boxes and knock the dust off. Hopefully can get everything set back up in the next couple weeks. Appreciate you 👍🏼

I don't know what copy of her book you're reading, but when I cleaned up my versions, I also added several pages of warnings as an introduction to the book, where I point out some of the practices in the book that are no longer considered safe. You can find links to them in my signature line...

I've been through most of it... Its certainly not a thrilling read but useful... Currently im working on a model for a fume hood... got one in mind but finding the right exhaust fan might be tricky so i may have to build around whatever i can find that will do the job... Opened a bottle of HCL...

Short answer - that is going to depend A LOT on the rest of your system set up ???? To be discussed once the two threads are combined Kurt

...to gold and silver refining. I have been studying about this process for about 3 months. I have made a successful process of .925 sterling into .999 silver already and I’m working on my first gold refine. I’m looking into how to make a fume hood in my unattached garage. Anyone have some ideas?