1, put the foam box. You can put ice powder and ice in a foam box and cover it with a thick quilt. Because the quilt is covered, it will not let the ice powder and the chill in the ice run away. The quilt can keep warm or cold. There was no refrigerator before, and that's how popsicles were sold.

2, insulation barrels. Making ice powder really needs a lot of ice cubes, and the household refrigerator can barely be used. Freeze large chunks of ice, then break it with a hammer and grind it into smoothies with an ice crusher. Then keep it in a thermos bucket, usually 8 hours is no problem.

3. Choose dry ice or ice bag. It is more convenient to use dry ice or ice bag, but the cost is relatively high. You should choose according to your personal situation, but dry ice or ice bag can be put directly in the incubator, and the effect is much better than ice.