In a message dated 08/12/2010 10:08:51 GMT Standard Time, g3lyp@...
Is it the 10 vol stuff you used to be able to
buy from Boots or do you have access to the 100 vol stuff which is quite
corrosive I think, and would ring alarm bells if one tried to buy it these
On another topic, a few days ago I asked
you, via this reflector, what sort of IR thermometer you used for
surface mount soldering, but the message didn't appear so must have been
lost in cyberspace!
Sorry the message was lost.
I did a reply for Andy giving the proportions as best I can remember, but
the H2O2 is about 40 volume, perhaps a little less. It can be purchased
as 'developer' from Hair stylist suppliers. However, I do have access to 100
volume but sadly no higher. - I've always fancied trying to build a
monopropellent thruster to demonstrate at the AMSAT colloquium. 100 vol with
silver disc catylists work well enough for a demo, but for real applications
68% is the critical concentration. Beyond that, the conversion process
generates Oxygen as expected but also superheated steam at temps up to 600
The IR thermometer was purchased from RS components who were doing a
special on them a couple of months ago.
The stock number is 411-122. The datasheet will be at rswww.com
It can be calibrated for various colours. That particular product
also has a socket on the front to connect an external Type K
With a bit of research you can probably find them much cheaper from other
suppliers. (It's almost certainly a relabelled product from another