When should sample bottles for milk be filled to the proper level?

Filling sample bottles for milk to the proper level immediately after milking is crucial for several reasons. First and foremost, it ensures that the samples reflect the true quality and composition of the milk at the time of milking. Milk can undergo changes in its physical and chemical properties if left standing, especially if it's not properly refrigerated. By collecting samples right after milking, the integrity of the sample is maintained, leading to more accurate testing results later.

Additionally, filling the bottles right away helps prevent contamination from environmental factors or from handling delays. This practice aligns with industry standards that emphasize the importance of prompt and proper sampling methods in maintaining product quality and ensuring accurate assessments of milk quality and safety. The proper handling of samples from the onset is critical for ensuring compliance with health and safety regulations, making this practice essential in the dairy industry.