Aimed at those who work in labs with glassware can anybody tell me how I can get off burnt DME on the inside from a starter I made.
Funny thing is I always add water first so I don't know how it got burnt.
I've tried VWP a couple of times with a bottle brush but no joy.
I was thinking soda crystals?
QuoteAimed at those who work in labs with glassware can anybody tell me how I can get off burnt DME on the inside from a starter I made.
Funny thing is I always add water first so I don't know how it got burnt.
I've tried VWP a couple of times with a bottle brush but no joy.
I was thinking soda crystals?
Noooooo :(
I gather HCL will do it but was looking for something across the counter
Neat Amphoclen? ;)
try rhubarb and lemon juice heated in the conical. should help break down and lift off the carbon from the burnt dme
Declan
You can buy HCl OTC in the hardware. Its in certain types of drain cleaner, although the vast majority are sulphuric acid so check it first ;D
Who needs school,you get better chemistry lessons here,mcguyver style. :)
Ok got drain cleaner from Hardware store and its 95% surphuric :)
I poured it in and I kid you not there was fizzing and lots of smoke, burnt DME all gone
Jesus whats in that stuff :o
Be careful with sulphuric acid as it can etch glass if left in contact for long enough.
QuoteBe careful with sulphuric acid as it can etch glass if left in contact for long enough.
My conical now has a lovely gents lavatory ming, only joking it was rinsed for 2 mins after the 5 min soak, i was shitting myself to pour it down the drain.
Hmmm sulphuric and sugar :o
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