12 x 500 ml Polypropylene (PP) wide mouth bottles by United Scientific Supplies. Can be autoclaved.
Possible homebrew uses include: Refractometer and pH sample collection, yeast rehydration, yeast washing and slurry storage. Also an easy vessel for making and storing sanitized water. I use similar containers to collect samples and to aid with yeast rehydration. Check out Tip 1 on our Tips Page for more info on my process for yeast rehydration.
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions.