The 100, 250, 500 and 1L plastic bottles you can put oil, grease, diesel, Adblue, coolant, water, screenwash etc. So you can use the single part odd for any of these sample types. Anything extremely flammable like petrol has to go in our Aluminium UN approved containers and on a hazardous goods service (you can get a quote to use our hazardous goods account if needed). Electrical oils requiring dissolved gas analysis should go in glass bottles with polycone seals to prevent gas leakage and be filled to the neck with only 1 cap full of headspace. Thermal oils or temperatures exceeding 120c should use a metal container to prevent plastic damage.