The Liquid Gold Colostrum Collector makes it easy to preserve your liquid gold. Colostrum is baby's first immunization and you don't want to lose one precious drop! Manually express your colostrum and draw it up directly from the nipple with a simple squeeze. The 5ml collector is freezer safe as well. Optimal for early days feeding of colostrum as the typical amount of intake for a full term newborn infant on day 1-2 is 3-5ml per feeding. For reference, one teaspoon is just under 5ml (4.928).