I always ph 5 liters of water and keep it in a bottle for watering my plants with. I think the soil ph should be around 6.5 but I'm going to go and check for sure. I struggle with the liquid test kit that I have cos I find it hard to match the colour (my eyes are usless) so I need to get a digi one soon.

I got a bottle of volvic which is ph 7 and another type of bottled water that is ph 6.4. I mixed 50ml of each thinking that I should end up with 100ml of ph 6.7 water. I kept this in a test tube to compare soil run off to. The water mixture that should be 6.7 though doesn't look like 6.7 should on my colour card, it's more like 6.4.

If bottled water says it is 6.4 at source, does that mean it will be 6.4 when I buy it?