Re: Please validate website claim and my method of making Colloidal Silver

RE: How much heat do you apply?

A. The answer will take into account the total volume of water(heat load), and applied wattage. ie, in my own case, I make 2L of CS at a time, and so the stirrer I'm using has a 900w heating element, which I run at maximum throughout the process. There is of course a procedure involved in getting the water up-to temperature, and starting the process, though for the sake of keeping things simple, the temperature of the distilled water is at/or around 100c throughout processing.
 

RE: Do you have a link to the hot plate product that you use?

A. I'm currently using a VWR 12365-382 heated stirrer after having gone through several lower end alternatives that have either failed or simply weren't up to the task(heat-wise). 

Overall, I like this particular unit for it's simplicity and durability. It has a true ceramic top(vs enamel) which helps buffer the higher temps and makes cleaning relatively easy. It's also one of the few 110v units that provided 900w of heat(for larger batches). - ie, making 2L of CS in approximately 40mins possible. 

That said, if you're in the market for a heater stirrer, I wouldn't recommend anything less than 500w (heat) for anything up-to 1L and 750w and above for anything up to 3L

There's also the matter of a stir-bar, which is relative to the size and shape of the vessel your using. 

RE: Other than 30 VDC power adaptor, air bubbler, Canadian Maple Leaf silver coin for anode:

A. Canadian Maple Leaf: OD (dia.): 38mm (1.5in)
Area of a circle: A=πr2=π·19≈1134mm p/side
Total surface area: 2268 sq. mm 

Current: 0.3 or 1.0 mA
Volume: 32 oz

MISSING: Total wetted area - aprox. coin submerged (percentage)

QQ. how is your coin suspended in the solution?