Good kit Martyn.
I was interested that you use the Ritter mini kit as I have seen Graham S's and was very impressed by it. I'm not sure where to get one as the US price is $29 and the normally very competitive Outdoorcode is asking £29. There is a lot of thought gone into the Ritter kit and it is tiny - they even got the Fox whistle redesigned so it would fit.
One downside of the Ritter kit is that the only way to purify water is by boiling using the foil as an improvised container. I think they were going to add purifying tablets but didn't because of expiry dates. But I see you've already allowed for that.
I was interested that you use the Ritter mini kit as I have seen Graham S's and was very impressed by it. I'm not sure where to get one as the US price is $29 and the normally very competitive Outdoorcode is asking £29. There is a lot of thought gone into the Ritter kit and it is tiny - they even got the Fox whistle redesigned so it would fit.
One downside of the Ritter kit is that the only way to purify water is by boiling using the foil as an improvised container. I think they were going to add purifying tablets but didn't because of expiry dates. But I see you've already allowed for that.