with the new european norm EN 1089-3, all the colour marks on the gasbottles will change. this will be done in the period of time from january 98 to july 2006.
the colour mark is placed on the shoulder of the bottles.(the caps can be changed too easy with wrong ones.) during the period of change the bottles are signed with
two big N for New on the shoulder. (don`t mistake for N in Nitrogen)
the colours do not correspond to the content of a bottle, they correspond to the danger going out of the content.
e.g. yellow for corrosiv gases, red for inflammable gases.
the following list is not complete. for other gases and mixtures ask the supplier.