- #1
elementHTTP
- 21
- 0
Hi there :)
I have 10g of NaOH whit 1 liter of water for photo etching
Solution is one year old, and do i need to make new one (is there a lifespan of solution) ?
If yes how to dispose it safely ? (can it be disposed in regular drain ?)
thanks for your time :)
I have 10g of NaOH whit 1 liter of water for photo etching
Solution is one year old, and do i need to make new one (is there a lifespan of solution) ?
If yes how to dispose it safely ? (can it be disposed in regular drain ?)
thanks for your time :)