Homebrew PCBs

----- Original Message ----- 
From: "Marko Pavlin" <mp@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, January 24, 2008 4:28 PM
Subject: Re: [Homebrew_PCBs] Safety Question X Carbon Monoxid e & Homebrew 
PCB


> It's not neccessary a carbon (monoxide), which can trigger the CO
> sensor. They are cross-sensitive to hydrogen, which is intensively
> produced by chemical reactions with etching. The CO sensor has filters,
> which increase the selectivity, but they may get aged which makes whole
> sensor more sensitive to e.g. hydrogen.

No hydrogen is released during etching.

Leon