Randy, bullseye! I just noticed the nuance: Emil writes about *THE* beaker, whereas I write about identical syringe*S*, identical beaker*S*... Knowing about the fact you describe, I never did it the other way around! (Combining different solutions by pouring them on top of each other, watching the intermediate/final volume, that is...) I always use the same number of measuring vessels as the the number of different solutions the job needs...

Regards,
Loris.