[Fourier]

Hello,

I am trying to mix a solution of Cupric Chloride to use as a copper etchant for printed circuit boards. 

According to http://photo.omnistep.com/cucl2/?slide=1&tnmode=

I need to mix 200g of Cupric Chloride (CuCl2) with 100g HCl 37.5% and 1 L of water.

I'm confused on how to measure 100g of a liquid substance.   Am I just going to be measuring the weight of both substances using a normal scale until I have 200 grams of CuCl2 and 100 grams of HCl 37.5%?

Now, If I needed 2 liters of the Cupric Chloride, can I double all of the ingredients?

Thanks

[Borek]

Yes & yes. Although picture suggest volume measurements which makes me doubt the recipe.

[Arkcon]

Sometimes a recipe is written with a mass for a liquid, it's all based on how it was originally worked out. So the procedure is going to be: Beaker onto scale, zero scale, and liquid to 100 g, then mix with solid, which is weighed separately.  You implied that you're going to weigh out solid, then add liquid to the next weight, that may work or it might produce side reactions with bad results.