From the guide; excess calcium ions variety a posh with the PR indicator (pink), but then as being the EDTA is extra they start to form a complex with EDTA and it turns blue. What is interesting is, I used to be ready to connect with my gf new Macbook https://limo-nottingham25780.creacionblog.com/36424218/detailed-notes-on-cj-limo-portsmouth-nh