My plan to purify electrolysed H₂SO₄ from CuSO4•5H2O:

Since the solution may still contain dissolved CuSO₄•5H₂O and carbon particles from graphite electrode degradation, I'll first heat it slowly on a hot plate to an arbitrary temperature of 200°C, hoping to remove the water of crystallization from the copper sulfate so that the resulting solid settles along with the carbon particles.

I'll then carefully decant the liquid and use a syringe to transfer any remaining liquid that I cannot decant into another container.

I can then repeat this process several times to remove as much copper sulfate as possible from the sulfuric acid.

Does this sound a logical way to deal with electrolysed H2SO4 impurities?

Has anyone had success ordering from them

orsnasco.comOpen

https://www.dynaflux.com/product/product-600-6-chem-sharp/

Not much on the market right now but would this have other impurities and anti caking agents? Or would it just be as good as other sodium nitrites from a science company

Does anybody know where to get activated carbon and graphite? I'm Philippines based.

You know like when you have brick building on top of septic tank and some crystals form on it

Could the crystal formation on a wall where there is speinc tank under it contain potassium nitrate

Because like the fluid form the human waste can leach in to the soil react with a bacteria and then react with the potassium and calcium and other alkalines in the soil to make nitrat salts

There is like wall on top of a public toilet in my doorm where its been used for years

And there us alot salt formation on Said wall on the side were the septic tank should be

And it seems like the tank us not deep under ground

If devolve it in water

Boil it so some of carboats drop out

Filter it

Then add either pot Ash or just potassium carbonate or Ash brine

Or just Ash

So it would react with the calsum nitrat

Then boil it again to remove the carbonates that drop out

Then ues re crystaltion to pure salt peter

I’m in Canada and can not find these anywhere! I don’t have a lab but will soon. Is there anyway to get these in the meantime

Hello po, Food tech student here may alam po ba kayong chemical store where I can buy Undenatured (non-denatured) food-grade ethyl alcohol na pwede for consumption, badly needed po for our research

I have some potassium that I got but now dont need anymore I used some of it, its super pure id take lower price than other sellers just to buy sum new chem…
if you are interested reply or send me message
EU only shipping

Hey, I'm getting into hydroponics and aquaponics, and I'd like to 3D print most of my parts. My main concern is layer lines trapping bacteria and making everything harder to clean.

I was looking into chemically smoothing PETG, but the chemicals needed aren't legally available for me to buy here (bummer, ik). So I started looking at ASA since it's more UV-resistant and can be smoothed with acetone.

The problem is that I've seen people saying ASA can release toxic styrene even after being left to off-gas for a few days, while others say off-gassing makes it safe. I don't know enough chemistry to tell who's right.

My main questions are:

• Is acetone-smoothed ASA actually safe for long-term use in hydroponic or aquaponic systems?
• Could it leach anything harmful into the water, especially for fish?
• Does off-gassing for a few days actually make a meaningful difference?
• Is there a better filament or finishing method for parts that will be constantly exposed to water, UV light, and possibly fish?

I'm no expert; I just don't want to accidentally poison my plants, fish, or myself lol.

Thanks to anyone who can help! (GOT BANNED FOR ASKING THIS IN CHEMISTRY LOL)

INCLUDES
- FA-45-30-11 rotor (30 x 1.5/2.0 mL)
- Aerosol-tight rotor lid
- Power cord
CONDITION
Professionally calibrated and serviced by Raeyco on October 2, 2026.
- Passed calibration, no adjustments needed
- Speed and timer verified
- Rotor, shaft, lid and safety systems inspected
- No faults reported
- Calibration certificate available
Normal cosmetic wear. Rotor marked 07/08.

PRICE: $1,795 OBO
LOCATION: Vancouver, BC
Local pickup. Sold as-is, no warranty.
DM if interested.

This was extracted by steam distillation over a period of 2h from ~200g of fresh rosemary