Using a Spoon to measure Caustic Soda??

yehuda · 18th September 2005, 11:55 AM

I want to develope a positive pcb using caustic soda. From reading the forum here, it seems about 10 - 14 grams per litter is about correct for developement without removing the exposed traces.

the problem is that I do not have access to a scale. I would like to know in terms of "spoon units (tea or table)" what would be approxiamately the correct amount?

I realize that at best it is an approximation.

TIA

Yehuda

Sch3mat1c · 19th September 2005, 06:31 AM

Hrm, two level teaspoons? Just guessing, I'd have to go weigh it...(and my lab is humid so I don't feel like getting out the lye!

).

Tim

18th September 2005, 11:55 AM	#1
yehuda diyAudio Member Join Date: Jun 2005 Location: jerusalem	Using a Spoon to measure Caustic Soda?? I want to develope a positive pcb using caustic soda. From reading the forum here, it seems about 10 - 14 grams per litter is about correct for developement without removing the exposed traces. the problem is that I do not have access to a scale. I would like to know in terms of "spoon units (tea or table)" what would be approxiamately the correct amount? I realize that at best it is an approximation. TIA Yehuda

19th September 2005, 06:31 AM	#2
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	Hrm, two level teaspoons? Just guessing, I'd have to go weigh it...(and my lab is humid so I don't feel like getting out the lye! ). Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

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