100 test stripes in a packet
For the examination Ad Blue Tanks.With dark discoloration the tests proves the wrong refuelling with diesel or other oily liquids.
Iveco service information:
"If with the test the oil test stripe changes, this is a sign, the diesel oil in the Adblue-tank was filled and exists therefore no guarantee for the damage."
Trust , but verify is better! Do not carry out this test preventively, with it one do not damage it seems. High consequential costs can be avoided by timely diagnosis.