What is the purpose of using these?

These are used in a reflux still. The alcohol condenses on these and runs back into pot. This allows for the moisture that reaches the top of still to contain a higher percentage of alcohol. In short you get a higher percentage of alcohol by volume (ABV) from your still.

How long do they last?

About as long as a toilet. They are ceramic rings. They may get smooth but they will last, virtually, forever.

How many do I put in for a 1 gallon air stil?

1/8 to 1/4 cup or so, it's not exact. Lots of people also add pieces of copper.

how many bags suggested for a 2" x 3' column

The one pound bag I received contained 416 ml. Your 2" x 3' column has a volume of ‭‪1,853.328‬‬ ml. if you don't use any other stuffing, so you need about 4.4 bags. These are very small about .2 diameter X .1 - .4 length, so you need something at the top of your column to prevent them clogging the outlet tubing when you pour them in the column. I put some in a string tied jelly bag and slid it down the tube first for this purpose. They are dusty when they arrive, and must be rinsed thoroughly.

Ceramic Raschig Rings (1 Pound)

Product ID: 61025444

📏1 lb weight

🔄Large surface area

⚗️Chemical stability

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₨15026

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Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔬 Elevate Your Lab Game with FermFast!

EASY TO HANDLE - Lightweight 1 lb packaging for convenient use and storage.
BOOST YOUR SETUP - Elevate your lab's efficiency with these essential Raschig Rings.
DURABLE RELIABLE - Crafted from high-quality ceramic for long-lasting performance.
MAXIMIZE EFFICIENCY - Designed for optimal column filling, enhancing your process.
VERSATILE APPLICATIONS - Perfect for various chemical processes and experiments.

FermFast Ceramic Raschig Rings are a 1-pound package of high-quality ceramic rings designed for effective column filling, featuring a large surface area that enhances chemical reactions and processes.

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