The wonderful uCurrent must now be RoHS compliant for the EU, which means the solder is lead free.
Personally, I love lead. It's God's gift to mankind, unlike the Greenie tree huggers who could do us all a favour and stop imposing their environmental religious beliefs onto everyone else. Mmmm... lead... never been beaten for beautiful solder joints. I have used lead in soldering for 40 years and it hasn't affected me...

Seriously, one wonders how much crap made in China using lead and cadmium finds its way into Europe illegally. How may times do you see "Not RoHs compliant. Cannot ship to Europe" do you find on eBay? And how much Chinese electronics found on eBay is really RoHS or CE compliant? I have already seen fake CE marks on Chinese goods. China has a huge underground industry scavenging components from old boards full of lead and selling them on the grey market. My guess is no-one will ever check whether Heinrich's one euro MP3 player he bought on eBay has lead in it or not.