11.4.7. A tank truck used to transport milk must(1) have an airtight access port with a stainless steel hatch protected against dust by an exterior cover of hard, smooth, washable, impervious and corrosion-proof material;
(2) have a compartment designed and used so that the milk sampling and transfer equipment and the milk samples are protected against any source of contamination;
(3) be equipped with an automatic system for washing and sanitizing by flushing;
(4) be constructed to prevent undulations in the tank walls and provide complete drainage of the tank; and
(5) be equipped with a mechanical milk sampler, which must be maintained at a temperature of not less than 2°C; the tank truck must also be equipped for manual collection of samples.
The tank of a vehicle used exclusively to transport milk from dairy species other than cows or goats need not meet the requirements of subparagraph 5 of the first paragraph.