On Mon, 24 Jan 2022 12:55:43 +0100 Johannes Střelka-Petz via Metalab wrote:
https://media.ccc.de/v/rc3-2021-chaosstudiohamburg-431-vapour-phase-solderin...
- WMF Küchenminis Mini Fryer with Grease/Oil, Deep Fryer with Potato Slicer, 1000 W, Removable Oil Container, for Crispy Fries, Matte Stainless Steel https://smile.amazon.de/-/en/K%C3%BCchenminis-Grease-Removable-Container-Sta... - € 108.9
- Galden LS 230 400g https://de.beta-layout.com/elektronik-shop/loettechnik-zubehoer/10686-galden... - € 88
Danke für die Einkaufsliste zu diesem Projekt, Johannes. Ein Kommentar zum selben Video auf Youtube (s.u.) zeigt halt auf, dass Galden in der Atmosphäre leider enorm *klimaschädlich* ist. Ein perfluorierten Ether der laut dt. Umweltbundesamt ein 10300-mal größeres Treibhauspotential haben soll als CO2 :-(( Klar, schon aufgrund des hohen Preises wird versuchen werden, dass möglichst wenig als Dampf entflüchtet aber das klingt mir nach einem No-Go statt nach entspanntem Bastelspaß. --> https://www.youtube.com/watch?v=jiEU2uqPdsE --- snip --- LambdaTon vor 3 Wochen (bearbeitet) Good presentation. Sadly, I saw in a report from the German Environment Agency that 1 kg of PFPE (Galden) is as worse as 10300 kg of CO2. So, releasing even small amounts of the stuff into the atmosphere can have a large impact to the climate. tlrg2 vor 3 Wochen hey there. do you have any source on that claim? LambdaTon vor 3 Wochen @tlrg2 Sure. My comment was based on this report (1) from 2015, which is written in German. On page 29 it covers PFPMIE (PFPE) that it is sold as Galden and has a global warming potential of 10300. They mention also that it is used for vapor phase soldering and that even small amounts are relevant to the climate. I also found this more recent document (2) with a lots of tables from 2019. On page 5 it shows the same number for PFPMIE. It also states the source for the number, which seems to be the IPCC report from 2007 (3). On page 23 and 213 you can find the same numbers. Moreover, I found this other report (4) in German (see page 63). Interestingly, the manufacturer seems to state to the authors that it no longer produces PFPMIE and switched to other PFPE variants that do not need reporting for produced amounts under EU regulation. For the global warming potential of their new PFPE products the authors assume that it is in the same ballpark of around 10000. I am really bad at chemistry, so I can not tell you how bad this stuff really is. My personal conclusion is just to stay away from it for my private projects and continue to use the good old oven method. (1) https://www.umweltbundesamt.de/sites/default/files/medien/378/publikationen/... (2) https://www.umweltbundesamt.de/sites/default/files/medien/2503/dokumente/tre... (3) https://www.ipcc.ch/site/assets/uploads/2018/05/ar4_wg1_full_report-1.pdf (4) https://inis.iaea.org/collection/NCLCollectionStore/_Public/52/098/52098145.... --- snap --- cu, Peter