All sorts of things can be frozen and brought through. Some of the more common ones are water, orange juice, lemonade, tea and other non-carbonated beverages. Bourbon is a no as is anything high proof as they will not freeze at normal freezer temperature.

Always use a deep freeze, as we southerners call them, instead of your refrigerator freezer compartment. It is quite a bit colder than the refrigerator section. If you are super serious, you can even bring it to the airport in dry ice and just leave the dry ice in the car. It will be gone when you return.

Although you SHOULD NOT DO THIS, an extreme possibility for those that have access, is a lab freezer for bacteria and cultures, I think ours was -160F, will take care of it. It is very dangerous to handle materials at cryogenic temperatures, and requires special safety equipment and containers. Most grocery water and juice bottles will not survive the freezing. As for hydrogen peroxide, the special containers needed would attract attention.

For normal household freezing, be sure and pour a bit off the top before freezing and then replace the caps after it is frozen.

Let us know how it works. I put 50/50 as the odds.

I'm pretty sure they're talking about room temperature. It would be rather confusing to the general public if their messaging was things that are liquid at room temperature. Yes, I'm sure your molten iron would be a liquid when taking it through, but I'm pretty sure that nobody carries that.

How long would high-concentration Hydrogen Peroxide stay frozen if it came from your -160F freezer? Too quick for a malicious person to get from freezer to checkpoint?

It depends on the container, insulation and other factors. The big problem is that the material is highly unstable in liquid form. Even trace amounts would "melt" and create suspicion. At those temperatures, and even any below zero temperatures, a cryogenic bottle would be necessary for safety. That in itself should create suspicion.

Water, juice, tea and other items mentioned frozen to very low temperatures do not become dangerous as they thaw, but the low temperatures are likely to damage or destroy normal bottles. They too would need special containers, but not cryogenic bottles as they melt a higher temperatures and a bit of melting is not necessary.

While mentioned mostly as an semi-humorous aside, handling any material below -20F or so becomes a dangerous process in of of itself, and anyone with access to a cryogenic freezer would know that. Special gloves or tongs are used to prevent severe frostbite and frozen skin. I should not have mentioned it and my OP will be edited.

Once again,

http://blog.tsa.gov/2009/11/response...gulp-over.html

If Britney can do it, we can do it.