1、Made of high quality aluminium film and PE material, non-toxic, environmentally friendly and safe. 2、The interface adopts screw design, easy to use. 3、Strong sealing, can effectively collect and store bovine colostrum, maintain the active immune globulin (lgG, IgA, lgM, lgE, IgD) and rich milk calcium, protein, various trace elements and other nutrients in milk secreted by bovine colostrum. 4、The package is equipped with milk alarm line for easy filling. 5、Suitable for calf colostrum bag, sheep's milk bag, perfect for pasture. Condition: 100% Brand New Item Type: Colostrum Bag Material: Aluminium Film+PE Color: As shown in the picture Size: Approx.43.5x25cm / 17.1x9.8in Weight: Approx.110g/3.9oz Suitable for: Calves Application: Used as calf colostrum bag, goat's milk bag Instructions: 1. High quality colostrum: use the colostrum measuring instrument to detect the content of antibodies, immunoglobulin ≥50mg/ml can be frozen preserved. 2. Colostrum preservation: the temperature of colostrum should be 0-4℃ and the storage time should not exceed 24 hours.The storage temperature of frozen colostrum should be below 0℃, and the storage time should not exceed 6 months. 3. Defrosting of colostrum: the frozen colostrum should be defrosted by water bath at 50-60 ℃, and fed in time after defrosting. The defrosted colostrum should not be frozen again. 4. Colostrum feeding: the feeding temperature was controlled at 38-40℃. 5. Feeding criteria: calves are fed 4 litres of colostrum or 10% of their body weight within 1 hour of birth and are fed again every 6 hours. 6. Feeding sanitation: All irrigation equipment should immediately wash and drain to store after use. 7. The above content is only for reference according to the 5OP standard of the pasture. 2 x Colostrum Bag