Silver Cell Anode Filters Part 7

[@ArielleViking]

Very interesting to watch. Those BBs of gold all add up, nice. 👍🏻

[@betty4gators]

I really enjoy your videos. I saw Part 7, missed the first 6 parts, went back and binge watched the 7 parts. I like how you admit your mistakes and show how calm you are and then describe the solution. It shows me no matter how the mistakes occur, you can always recover from them. May have to repeat steps though. Keep making the videos.

[@CSMMaster]

The episode where you let Mrs Sreetips melt the gold was cool, not only because we got watch her go scorched earth on some gold, but also because we got to see a little more of your shop layout. It would be fun to get a quick walk around your shop and see where you do each of the processes.

[@thisisbeyondajoke6748]

Has Mr Sreetips ever shown his own face.?😂😂

[@heidimunk4938]

@@thisisbeyondajoke6748 Yup! He has. Go watch earlier videos. He used to do the intro before starting.

[@Joe.Rogan.]

Gold is gold no matter the amount. If anything it's a testimonial to his refining skills being able to collect the microscopic gold residue stuck the left over silver shot. Now the real hard work begins working with the PGMs.

[@thisisbeyondajoke6748]

Surely it would be in fine particles all around us . 😂😂

[@nonshock]

I really love it when you start the scientific talk like Dash of distilled water and a shot of Nitric acid it is amazing, your my favorite Channel to watch thanks for all you do.

[@arnedalbakk6315]

Hello friend. Agree whit you. Take care. Arne

[@mrtank1967]

Any gold found always exciting. Thank you for all your time and patience for that little bit. I hope your video pays off. Cheers.

[@NeverEvil1]

Always neat to get some bonus gold that was hiding in with the silver. 👍

[@arnedalbakk6315]

Hello friend. Sreetips is good to save up bonus gold...hihi Take care. Arne

[@Enjoymentboy]

That settling time lapse was great. It really shows how density can affect separation. I had a solution this summer that just would not settle after weeks of leaving it and i was at my wits end of what i could do since it just wouldn't filter out. Then I had the thought that the solution was just too dense and i added in an equal volume of water and it settled out crystal clear overnight. Now i work on the plan that I'm just going to dilute when i need things to settle out and if I think there's enough water then I still need to add more. 😊

[@sreetips]

Dilution is the solution.

[@Antonowskyfly]

You are welcome. That’s a relief of a burden worth its weight in the amount of precious metals involved(subtract materials)…I haven’t checked the price lately, I must do that. Thank you Sir!👍👍🤟

[@A.J.Collins]

I am so glad you are persisting with this project. It is fascinating.

[@sreetips]

I’ve got no choice. This material has several of my work-horse beakers held hostage. I’ve put it off too long. I need to get it done and off my plate.

[@rodneyhendrickson5094]

You definitely got better result’s Thanks for sharing

[@tonydalton6756]

When you think about the platinum group metal contamination. Your methods are obviously better than some of the commercial operations out there. In reality there should be no platinum or lead. I love all that you do Sreetips.

[@ExtractingMetals]

Nice job recovering those metals. I did a recovery today from Gold filled scraps. Estimated 10K. Now ready to inquart and refine.

[@asjamuir5534]

Another excellent video I love that even after processing everything is then put in for cementing out again just to ensure all metals are being caught super efficient u must be at least at 99.2/99.8% full recovery

[@jamisontaylor878]

Nice video once again thank you !!!! I like my PGMs with my gold or silver depending on the refining material I found it isn't cost affective to chase them . I try to concentrate them when possible though 😊

[@MonasteryofLaRabida]

I like everything about your channel, honestly I don’t feel bored with watching your videos for hundred times a day

[@arnedalbakk6315]

Hello. Sreetips have a gift to explain and learn us his passion and hobby. Take care friend. Arne

[@DavidDavis-fishing]

Goooood morning from central Florida! Hope everyone has a great day!

[@arnedalbakk6315]

Heeeello my good friend . Hope all is good whit you and the family David. Take care and......God bless you 😁 Arne

[@sreetips]

Goooood morning!

[@DavidDavis-fishing]

@@arnedalbakk6315 Hellooooo Arne! All is good here! How are you doing?

[@arnedalbakk6315]

@@DavidDavis-fishing hello David. Thank you. All is ok 🙂 Be careful in sreetips. Many attempt to scam

[@arnedalbakk6315]

@@DavidDavis-fishing take care my good friend🤠

[@joeontko2186]

POUR VERY SLOWLY WITH THE NITRIC ACID IN THE BOILS .this is very sound advice.

[@takashichacon3510]

thanks for the videos. love them.

[@JoeyDadawg]

If sreetips was your chemistry teacher in high school how cool would it be?

[@disgruntledtoons]

@1:32 reminds me of something. When you write your how-to book, the section on the fume hood should say, "If you refine indoors without a fume hood, you will die."

[@sreetips]

Good point

[@davidmccleary5540]

I thought you would melt it in a cupel. Great video

[@sreetips]

I’ve never used cupel.

[@andrewrossi7164]

Awesome stuff as always Sreetips 👍

[@denverd2007]

Your postman must love your deliveries of consumables....i suppose you buy many gallons of Nitric and Hydrochloric at a time.

[@sreetips]

I buy nitric six 2.5 liter bottles about every six to eight months. I buy all my hydrochloric and sulfuric acid at Ace Hardware.

[@nickrigney9498]

when precipitating gold from platinum groups in solution best using Ferric sulphate rather than SMB or can react with anion exchange with the pgms and gold putting into solution in aquas state which will still be in solution but wont show up on your stannous chloride test, the palladium would of come out in the nitric washes and dragged down with the silver Aswell as some platinum, The darker blue liquid can also be Titanium Chloride and aquas rhodium 4 (Blue Rhodium)

[@sreetips]

Ferrous sulfate will precipitate the gold, all the gold, and nothing but the gold - C.M. Hoke: Refining Precious Metal Wastes

[@sreetips]

But SMB is quicker.

[@sreetips]

And easier

[@MfourBhpQ]

Hello Mr. SREETIPS. I hope you and the Mrs. are doing well! I was just wondering if by chance you remember which video/s you had SREETIPS written on the bottom of a Corning ware dish in such a way that when you look at its reflection in a nearby beaker it looked normal? I would love to have it as my iPad wallpaper

[@sreetips]

I think it was one of the palladium refining videos.

[@chiraldude]

More gold is good but what I really want to see is whether you can succeed with PGM separation. You must have enough Pt, Pd, and Rh building up from your silver cell "slimes" to make it worth while? I'm not suggesting you separate these from each other. Would like to see a bead (ingot?) of mixed PGMs and discussion of what it might be worth.

[@sreetips]

That’s coming, but not soon.

[@danielberding7692]

Great video friend I think copper is going to make a move and go up up away high dollar

[@sreetips]

I use copper in my refining.

[@aga5897]

A thing about Dissolving stuff is that the reacted material needs somewhere to Go, water in this case. If there isn't enough water to 'take up' the dissolved metal ions, you're pissing in the wind, using up loads of nitric for no real benefit.

[@sreetips]

I always add water to nitric reactions

[@aga5897]

@@sreetips Just saying that there has to be enough water in there During the reaction to take the Products out of the way, or they just slow it all down by going backwards. Chatellier principle. It was super-saturated (not enough water) evidenced by how fast the AgNO3 crystallised on the glass.

[@sreetips]

Good point. Question; do you remember which video has my user name written in reverse so that is read normal in the reflection on the beaker? Thanks.

[@aga5897]

@@sreetips That was many many videos ago ! Sorry, i don't remember which one.

[@privateuser2463]

I was surprised you did'nt incinerate that material before hitting it with the aqua regia, glad it worked out !

[@sreetips]

I probably should have. I didn’t think about it. Good catch.

[@shaneyork300]

Those little beads looks like 4 different metals. The one definitely looks like gold. Another looks like a PGM. The other 2 I'm unsure! This is a fun series for me, I'm sorry the feelings probably not mutual!

[@user-Sleepy]

Today’s episode was the light at the end of the tunnel. Nice job Sreetips.

[@OneOfDisease]

Those "stones" going to get processed next? I can't see a world where at this point in your refining system where you would have non precious materials in chunk form show up like that.

[@max3d_0ut]

Do those casserole dishes say "no stovetop", if so what temp have you run across that they start to crack on the hot plates? Thanks for all the great content as usual 🙏

[@sreetips]

I’ve heard that you can get them red. But I’ve never observed it myself. I had one shatter because I turned the heat up high full of wet cement silver.

[@sreetips]

It should say Corning ware on it. They can go directly on the hot plate or electric stove. But I don’t know how they hold up with direct flame.

[@max3d_0ut]

@@sreetips Appreciate the quick response, thank you! I know I personally have shattered pyrex sauce pans and dishes on stove-tops before when they were "dry", but wanted to see your experience with the durability of the casserole dishes because I see you use them a lot. Once again thanks for all you do Sreetips true legend!

[@empirefinds]

Wow brother so many interesting ways to achieve the same results. Awesome videos I wonder what the Christmas special is going to be. Stay safe brother.

[@kimberlynolz5725]

Another awsome video sreetips! I finnaly found me some oxolic acid so im gona refine my last 48g button an try to get ALL platinum group mettals out!

[@kimberlynolz5725]

U got any tips on using oxalic acid? I've not used it yet

[@sreetips]

I did it recently. 1) use a beaker that is much bigger than you think you’ll need. Mine was about 55g (I think) and I used a four liter beaker. Even so, it almost boiled over during the reaction. 2) both solutions much be boiling for the reaction to work properly. 3) when you adjusted pH to around five with ammonia, try doing it with the solution warm instead of boiling. I used sodium hydroxide to adjust pH once and didn’t like it because it caused the solution to spatter. I hate using ammonia, especially hot ammonia. Once you’ve got the pH to around four or five, THEN bring it to a boil for the reaction. Please review my recent video from a month or two ago.

[@josephcormier5974]

Well done sir six stars

[@JossWaddy]

Another great vid as always. Thank you. all this waste clean up had me thinking: I have wanted to ask before, but what do you do with the copper you cement out on your angle irons? And then what do you do with the iron solution?

[@sreetips]

Toss the copper (contaminated) and treat the acid iron solution with sodium hydroxide.

[@GokouZWAR]

@@sreetipshave you ever considered reusing the copper by creating a copper Ingot to use for other cementing processes? That would be a simple forging and skimming off any dross off the surface and pouring it. Check out how BigStackD does it on his channel. He does a lot of copper, aluminum, brass and bronze smelting. Maybe you could reuse a portion of your copper several times before it gets to be unusable. - or maybe send the material to him for his metal stack lol.

[@sreetips]

When I first started refining, against the recommendations of my mentors on the goldrefiningforum.com, I tried recovering and reusing the copper. They said it was a waste of time, resources, and effort. That clean copper for refining was cheap and plentiful. I forged ahead anyway, but soon realized that they were right. To a precious metals refiner, copper is waste and only good for the trash, after it’s been used for refining gold or silver. After working with metals that are valued at several thousand, to tens of thousands per pound, fumbling about with copper just doesn’t make any sense. I recently did a 4.5 Troy ounce gold bar. Its value is equivalent to over twenty six hundred pounds of copper. I can buy clean copper at local sales cheap. Sorry to be so blunt. That’s the way they were with me, and I still didn’t listen. Still had to try it. But that effort, trying to recover copper, made a believer out of me.

[@MrTk6969]

If that is silver picked from the slides then just repeat it and feed it back into the cell. No need to dissolve it then cement it again

[@patrickaussieMilartry]

Gday Mr steetips just curious, have you ever done a purification of a gold nugget. I was was thinking how one would purify the gold nuggets. I assume pretty much the same as 10k 14k 18k and so on. Just interested on average the expected gold Karat in a nugget. I was told there is a way buy using a bucket of water. And using the mathematical scale of the weight of Gold in water. Not to sure if the water test is effective. Cheers as always. Paddy Down under.👍❤️🇦🇺

[@sreetips]

I’ve done placer gold. I bought an ounce (31.1 gram) and refined it. Turned out to be around 18k gold.

[@patrickaussieMilartry]

@@sreetips ok thanks mate probably better off keeping them and selling to a collector. 👍🇦🇺

[@MartinTreadgold]

Does refining gold to 24kt increase the value.. e.g. refining 1kg of 12kt.. will the small refined 24kt bar be worth more than the initial 12kt stuff, if you cost up the materials to make the end product

[@sreetips]

You can hold 10k 14k and 18k gold just like they are, no need to refine it. So long as you don’t destroy the markings by trying to “melt it down.” Refining the gold just removes the silver and base metals that are normally alloyed with gold to give it strength and durability. The only reason I refine it is because I love doing it. And I love the look and feel of pure gold. Plus, by refining it myself I get to keep the silver and PGMs that I remove from the gold. When selling karat gold, you only get credit for the gold, the buyer doesn’t give any credit for the silver and PGMs.

[@sreetips]

PGM = platinum group metals.

[@sreetips]

12k gold is usually karat gold over brass. Also known as “gold filled.”

[@gfhrtshergheghegewgewgew1730]

wow what a twist, i wasn't expecting gold contamination to be the culprit as well

[@arnedalbakk6315]

Hello sreetips friends. Hello Mrs and Mr sreetips. Thank you for the clip. Always enjoy, and i learning new things every time. Have a nice day, and God bless you all. Thank you Sir. Arne

[@sreetips]

Thanks Arne!

[@arnedalbakk6315]

God bless you Sir 🔥

[@georgewieser2810]

This may be a stupid question. Do you ever recover material from the fume hood filters?

[@sreetips]

No

[@РусланБабух-ю2м]

Смотрю! Как всегда круто 💪🔥👍

[@carlburdick1855]

Would melting silver and copper together work in a similar way as gold and silver for the extraction process? P.S. would love to hear the story of how you got to this point in your life I.E. how you became interested in this and what it took to get to this point.

[@sreetips]

Yes, I usually use sterling silver, an alloy of silver and copper. Please see my story under “community” on my channel.

[@rodneyhendrickson5094]

I hope you get better results this time

[@markypee9040]

hey Sreetips... im trying to catch up on the videos man.. keep cranking them out!! so i tried to dissolve som gold filled jewelry and i did it like we do, and i got blue solution, gold foils... and this Grey Foam is the best i can describe it. more of a fluffy grey foamlike spongy congealed slop... might you or any other of your loyal follows have any idea what this slop is? TNKS

[@sreetips]

Probably something that wasn’t actually GF, but rather GP on some junk metal.

[@zero7329]

yoooo i was expecting this just to be a silver video. when i saw that yellow solution i was like whoooooa we got us a gold video too!!!

[@darkhorsegarage9623]

So you have the jewelry that is made of gold ,silver ,copper platinum and lead. You separate the metals. What is in the fumes.? Is that the water acid and carbon?

[@sreetips]

Probably nitrogen dioxide.

[@raziel23x]

Ever thought about doing a video on silver refining using salt for perception

[@sreetips]

No

[@markmayer2029]

Hey Mr. Sreetips, what kind of vacuum pump do you use for filtrations? Do they need to be corrosion resistant? Looking for something inexpensive, any recommendations?

[@sreetips]

I use an HVAC vacuum pump from Harbor Freight. I bought it late 2010 for $79 and it still in use. I keep the oil changed. I have a video posted about how I designed my vacuum system.

[@markmayer2029]

Thank you for the reply. Can you point me to the video in which you show your system, please? TIA.@@sreetips

[@sreetips]

Search “reliable vacuum system” on my channel.

[@Flanders4000]

Do you wear a gas mask when doing these experiments or does the fume hood cover that for you?

[@sreetips]

Fume hood draws the fumes. 3MP95 mask for melts

[@Flanders4000]

Does the fume hood use carbon filters or do you need like a extraction unit for it to pump out?

[@Flanders4000]

I'm very interested in doing this as a hobby but I don't know were to begin.

[@sreetips]

There’s no filters in my fume hood.

[@sreetips]

The first thing you must have is a fume hood. Please don’t try it without one. I ignored this and refined in my back yard. I now suffer from reduced lung function.

[@LU-D1GITAL]

Another classic!

[@shooride128]

Hello teacher I had a question One kilowatt of silver can be dissolved in several liters of nitric acid

[@sreetips]

I think it takes about 1.3ml nitric acid to dissolve a gram of silver.

[@virgisst761]

Almost everybody can do job with big quantities of gold. Hard is to work with small qyantities ..This is what i call .. well done..

[@AndrewHorsford]

Is it feasible for you to get a centrifuge so that you don't have to wait hours, days or weeks for colloidal mixtures to settle out?

[@sreetips]

Yes

[@bubaks2]

The process of rinsing is similar to brewing filter coffee.

[@SpartanONegative]

Nice Work and information Sreetips 🤠 Pure silver crystals i assume would speed up your gold refining. - Less steps / fewer refinings. God Bless 🙏

[@sreetips]

Using pure silver for refining gold would be a step in the wrong direction - it’s already been through the silver cell.

[@blatonwright5808]

Do you mind sharing where you purchase your Nitric Acid and how much you pay for it.?

[@sreetips]

Gfs chemical, $478 delivered, six, 2.5 liter bottles. Last six to eight months depending on what I’m working on.

[@kyzercube]

Sreetips just out of curiosity, after you verify gold in solution with ferrous sulfate, do you put the solution you verified in the spot plate cavity in your gold waste container? If not, then what do you do with it?

[@sreetips]

I think I wiped it out with a paper towel and tossed it.

[@nickfitz7276]

forbidden mouthwash

[@eldiabloblanco5526]

Love the channel but what do when you silver extraction is cloudy at the bottom but blue on top? Im stumped and any help would be greatly appreciated

[@sreetips]

Probably silver chloride. Filter it, or let it settle completely, then draw off the clarified liquid. Gravity is your friend.

[@eldiabloblanco5526]

@@sreetips Ty yeah it’s definitely a great hobby I was lucky enough to get 8 truck loads of e waste

[@fieryvale]

@@eldiabloblanco5526 I am interested in ewaste refining. If you don't mind, could you tell me how you go about it? Specifically, what do you do with the fiberglass?

[@eldiabloblanco5526]

@@fieryvale I’m assuming you talking about the board and/ fragments. I put the in a bin and grind them up for copper or any other metal that they contain. Then the fiberglass waste goes to waste company for further processing

[@fieryvale]

@@eldiabloblanco5526 Thank you for your swift reply. So you refine the things on the board, and not the board itself; thank you for clarifying that. I am curious as to who would take in fiberglass waste, though.

[@TrumpedUp888]

Wasn't there a larger nugget that fell out of the melting cup?

[@NateRidderman]

Yes that confused me too

[@jph8266]

Being the novice that I am… does your fume hood filter the gases or does it just vacuum out the air and discharge it away from people?

[@apveening]

According to what I understand from his videos and comments the latter.

[@sreetips]

It vents outside above my roof.

[@sreetips]

No filters

[@erickleven1712]

Blue foam is awesome.

[@PedroIvo01]

Hey, you should try recovering metals from the black mass of battery recycling. There isn't a single video on KZbin showing that, but it would be fun to watch

[@jwrappuhn71]

Excellent.

[@davestark7880]

This method of silver refining seems overly cumbersome. Do you know how major refinors, like US Mint etc. refine huge quantities of silver?

[@davestark7880]

Oh snap.. you;re goin after gold

[@Metal_89]

He isn't actively refining this silver/gold in this video series. He's recovering leftover materials from the anode filter baskets from his electrolytic silver cell.

[@sreetips]

I operate a thumb cell, anode basket suspended over the cathode in silver nitrate electrolyte, 3.5 liters capacity. Large refiners use a moebius silver cell: a large take full of gallons of silver nitrate electrolyte, with alternating anode/cathode plates, four inches apart, suspended in the electrolyte. In this configuration (moebius) the silver cell can be ten feet long and two feet wide and a foot deep, yielding a thousand ounces per day. My little thumb cell cranks out 50 ounces every ten days.

[@scotthultin7769]

564👍's up sreetips thank you for sharing 😊

[@franksworld9922]

Words of wisdom. If you are not part of the solution, then you are part of the precipitate. See what I did there! 😂

[@darkhorsegarage9623]

That was a cool reaction

[@anthonyrstrawbridge]

Eureka!

[@GokouZWAR]

I’m kinda shocked there was any gold in those metals. I figured that would be only metals other than gold (silver platinum, or palladium) Does this mean that the process with the nitric boils actually takes out small amounts of gold with it?

[@sreetips]

Yes

[@TechneMoira]

I'm surprised there's so little precious metals left in those silver cell slimes... makes you wonder if it's worth the cost refining it at all. Interesting video as always

[@sreetips]

It’s either refine it, or let the trash man have it.

[@cracklingice]

wow. I was not expecting just a half gram of gold. That small amount seems like it would have been better to just pour into the stock pot (or gold waste flask) than to bother with.

[@sreetips]

Agree,

[@apveening]

@@sreetips But there are two advantages of doing it this way: 1) Now we all know for sure 2) You got another good video out of it.

[@warpo007]

take note of when Sreetips says "off camera" that's when all the hocus-pocus and speaking in tongues happens.

[@sreetips]

I added more distilled water and forget to turn the camera on.

[@christo930]

At what point are you spending more money on chemicals than you're getting from the gold?

[@sreetips]

I don’t know. This is my hobby. I save lots of gold and silver. The key to success here is finding the material to refine. If I was spending more than was coming in then I wouldn’t be doing it for very long. Sorry, that’s the best answer I can think of.

[@twitchsrollbackmusic5542]

Hey @streetips is there any way i can contact you for advice? I have my own project going on currently in planning stages. I understand you are busy man, making all these great videos, Just needing some advice please! Keep up the awesome videos!

[@sreetips]

I don’t offer any training or tutoring services. Best to ask questions here for all to see.

[@BrianBurns-x4r]

Your the guru sreetips!

[@mabeycm]

Induce a magnetic field 1mm below the line of solution. Have to wrap with carbon or copper 3 mm. 1mm above 1mm below. Consider the use of diagmegnetic metal outside of beaker of the solution to create a field of drag (its like boiling (creating cavitation).) Layer your approach considering your material. Just a user's insight. It would be cool if the experiment was environmentally tested between (at vacuum) 1250°c - ‐75°c. Wonder if a viewer was hooked up enough that we get to answer this.... I believe we can do a community groundbreaking experiment. Just a shout into the darkness. -Flux

[@mabeycm]

On top of the magnetic field, there is a state of matter neglected, which is the liquid in the beaker. A transducer could create a stable pattern and from that stable state the magnetic field would have to be adjusted. But who could do this? It's out of reach for everyday scientists. That is why disclosure is so important.

[@mabeycm]

You could do this with a 9 volt battery in a small sample beaker. Fun experiment.

[@nwliving]

nice

[@TheLeadShed]

Aweyeah!

[@thisisbeyondajoke6748]

👏👏👏👏👏👏 thats all i got just claps.😂

[@JesusisLord-7A]

My internet lagged

[@garymyers6638]

You need a large scale centrifuge

[@sreetips]

That would help

[@bitsofeverything8385]

Half the gold was left in the melt dish.

[@sreetips]

I didn’t see that.

[@ArkaneOmega]

Can you refine my silver plates and teapot for 1 of your videos?

[@sreetips]

I only work on my own material.

[@sreetips]

Well said.

[@craigmcdonald8539]

I love you’re vids but watched a real old episode the other day and you didn’t look like I had imagined. I imagined you looked like Dan the prospector lol 😂 sorry 🤷‍♂️🤷‍♂️ you sound so much alike 👍

[@craigmcdonald8539]

Dan Hurd that is

[@richardchayer6597]

Hello

[@sreetips]

Hello

[@robertmitchell7792]

What are you trying to accomplish here

[@Metal_89]

Recovering the leftover material that remains in the anode filter basket from his electrolytic silver cell. Once he's recovered what he can from that he'll refine both the gold and silver.

[@sreetips]

It’s either this, or let the trash man have it. Plus, I get my glassware back in service.

[@arnedalbakk6315]

Hello friends. Hello Mrs and Mr sreetips. Enjoy the day both of you🌹🌹 And to you hacker. Go hack your self......Thank you all friends. Thank you Sir

[@arnedalbakk6315]

Hello my friend..Sad some people try to mess up a great canal like this is. Sorry if i use bad words but i get it out of my head . Enjoy the day sreetips. You are truly a blessing to follow... remember that Sir🔥

[@warpo007]

for those new to the channel, Sreetips 'Silver Cement' is left over from his magic mansion he built out of 999 gold.

[@sreetips]

I use silver to refine gold. Silver is a by-product of my gold refining.

[@annualgiftman9472]

: )

[@TheDragonseason]

this process seems like something you do once to experience and then sell the silver sludge to someone with more time after that

[@sreetips]

I have three choices: 1) throw it away and forget about it. 2) try to sell it and get almost nothing. Plus spot markets are grossly undervalued. 3) try to process it myself and hope for the best.

[@cadenpoblete4723]

1st

[@jamalabushameh8598]

is there an alternative to H2SO4 for gold pins cell

[@sreetips]

None that I know of.

[@antoniobalmorac3761]

Good job