Rockjock
Addicted to ArboristSite
I find some of the 1 litre mixing bottles the measuring lines are not accurate, if you fill to the litre line with "gas" & measure out 25 ml =40 or 31.25 =32/1 in a measuring jug & pour it into the container the 40/32 ratio lines don't line up? Iv'e had them both above & below the line on40 & 32/1 ratio's I seem to remember the bottles came from Asia
This is true you need to check the bottle as they sometimes bow in or blow out. I always just do a dry run with water to see how close the lines line up.