Ks-Tek Sterile Empty Vials with Self-Healing Filler with Flip-off Aluminum Cap Sterile Package (50ml, 6)

i needed one, bought 3 boxes which has worked out well. as i am studying biology, and botany, im using these for sterile cultures and i never expected to be doing that, but it works.

Can't recommend these. I've bought 50ml self healing glass vials many times & these are the first ones I've ever used that within a couple weeks of drawing out with a 23g needle every couple days, they all begin to leak from the seal while I have the bottle inverted. Oil runs out all over the bottle, my hand, the floor. I really hate wasting gear like that so I just can't recommend these. I guess its possible if you use a smaller guage needle you wont have this problem, of course then youll be drawing it out very slowly if using an oil based compound & im really not that patient. Maybe water based solutions will be ok since you can use a tiny needle to draw. Other brands havent done this until ive refilled them & reused them a couple times. Im guessing the rubber seal is just really thin & breaks down very quickly. If thats the case the solvent you use could worsen the problem. I use minimal benzyl benzoate with mct oil so im sure my solvent isnt the problem. This blend works perfectly with other vials. I'll have to find another supplier to buy from in the future. Hopefully Amazon will carry a different brand soon.

can only get increments of 6. very annoying

Good

Good!