All you need is a secure container for the fluid, so it doesn't leak away or get contaminated, as Afra pointed out.
We must now find a secure container to put them in, lock them away out of sight and then, hopefully, forget all about them.
You should collect waste batteries in secure containers.
You can store up to 3 cubic metres of waste oils at any one time in secure containers.
The counties were also ordered to provide secure containers for the ballots and private areas for voters to fill out the paper forms.
The three exhausted men placed their bounty in secure containers, then took their turns through the airlock.
Liquids are banned from landfill and must be stored in secure containers.
In other countries, small unmanned stores are run, where customers are able to enter, obtain what they need, and pay the bill in a secure container.
See Transit Manual for information on which consignments must be carried in secure containers or sealed.
Using the Glovebox, I will deposit the sample into a secure container, then bring that out.