I have a ton of 1ml syringes and I just wash them after using them. Sometimes some smell lingers but it is usually gone after drying.

I don't see an issue with reusing them. If you were doing this for profit you might want to ensure you do not reuse.

Do yourself a favor and grab a pack of disposable pipettes. (and a digital scale that reads to .01 if you don't already mix by weight)

I used to wash syringes/do the whole volume mixing thing. I switched to mixing by weight and haven't looked back.

The pipettes are great because they have .5 mL markings to give you a general idea. You can also shake them out after using and keep them attached to the bottles by rubber band, etc.

edit: because sterile

I just use two syringes (2ml & 10ml) and I just wash them out after use. Between flavours I run hot water through them.

I use 1ml, 3ml, 5ml, and 10ml plastic disposable syringes. I rinse them out if using for the same flavor or wash them if not. I see no harm in it for personal use. As others are saying, if making for others/selling your juice, don't do this :p

I reuse all my syringes for quite a long time. I just rinse them out with hot water in between recipes (since I use 1 syringe for each flavoring). Also, if you plan on reusing them, put some clear tape over the measuring increments so they don't rub off.

thats really the only method I have found that works so far, ive started dabbling in mixing by weight and it is a lot easier not having to wash out syringes everytime. Glass syringes are much easier to clean as well, but for now I just have one syringe rubber banded to every flavor I have.

Not sure what kind of water you're using but I rinse mine in Alcohol and then rinse them in very hot distilled water. I buy it in gallon jugs from the grocery store for about 70 cents a gallon. Distilled water won't leave any mineral residue behind after your rinse, which is a good thing.

Folks, please do yourself a favor and stop using rubbing alcohol and bleach to clean anything associated with your vape gear.. Would you ingest these things? You probably are because they leave a film on whatever they come in contact with. Just drop by your local liquor store and buy the strongest alcohol content cheap booze you can get.. Grain alcohol is the best. Everclear does a fantastic job for those states that sell it. If you won't ingest it, don't use it on yer vape gear.

I personally sharpie a number on the top of the white of the syringe and match that to a flavor. Clean them out regularly, but be sure to use the same one with its flavor, not to cross contaminate.

According to the CDC, you can sterilize glass at 340F for one hour. However, 340 is probably too hot for plastic.

I usually boil mine for about 10 mins and then throw them in the oven at 225 until they completely dry out. But, this is probably overkill for personal use. Soap and hot water is all you'll likely need. Just be sure to let them dry completely before storing them.

Another option is bleach and water. Run bleach through once, then rinse with water. Repeat a few times.