According to OLF helideck manual section 5.5.5, section 5.7, section 5.11.2 and section 5.11.6, marking of the various JET A-1 samples is required.
Helifuel AS provides you with the labels you need.
The various Helifuel labels are as follows:
– HF10742; 4L JET A-1 Sample
– HF2272; JET A-1 Tank Status
– HF2271; Not Approved fuel