3-5 milk samples (1/4 to 3/4 full flip-top milk vial for each sample) collected on 3-5 consecutive days at the same time of day; minimum of 6 ml milk each sample.
Freeze samples immediately after collection. Samples must remain cold, preferably frozen. See /services-fees/udder-health-mastitis/submission-guidelines for more information on how to collect a bulk tank milk sample. For more information, see Using Bulk Tank Milk Cultures in a Dairy Practice