There's a lot of expert advice on that site I linked but you can try to re-invent the wheel if you want. The laser pointer thing only shows larger particles of silver in the solution and shows nothing if it's pure ionic CS. I'm looking for a few small electronic parts to build a current limiting circuit for my CS setup but damned hard to find a place to get a few bits. Need a 43 and 430Ohm resistor and a LM334Z current limiter. May have to start scavenging parts out of old TVs etc to get them. Also need a diode in the circuit but already found a few of those. Going to need a pretty precise scale to measure the silver in a batch of CS or the silver lost from the wires after making a batch. I have an analytical balance that weighs down to 0.0001g that might do it.