Reddit mentions of BCP 50pcs Plastic Graduated Vial Tube with Screw Caps

I pour from the bottle to one vial sample like this: https://photos.app.goo.gl/vkT7YPlXa2QIwfQ22

I bought these vials from Amazon. You can get 50 pieces for 8-10 bucks. See link below (not affiliated): BCP 50pcs Plastic Graduated Vial Tube with Screw Caps https://www.amazon.com/dp/B074QKMF2G/ref=cm_sw_r_cp_apa_LWfGAb8TSCRYD

I get mine from Amazon, but I also use a lot of tubes. Instead of inking up my pens from bottles, I only use sample vials (or something like a TWSBi inkwell for my larger pens). It's a great way to avoid contamination of your ink. We live in a pretty moldy area, so I"m always concerned about fuzz on the pens syndrome.

Note: there are other types of tubes that are on eBay, but these cryotubes are by far the best. The other clear ones can't have 5ml unless you fill it to the brim, making a mess of things. These tubes are exactly like the ones sold on Goulet pens, only it has blue lids instead of clear.

https://www.amazon.com/gp/product/B074QKMF2G/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

If you'd like a rack for your sample vials, here's a link to the one that I purchased. It is identical to hte ones sold on Goulet.

https://www.amazon.com/gp/product/B005Z4QWIK/ref=oh_aui_detailpage_o07_s02?ie=UTF8&psc=1

I know Amazon has some good options for that. Especially if you're looking for cheap ones. I'll get the link looking better in a second, but I'd start here (https://www.amazon.com/dp/B074QKMF2G/ref=cm_sw_r_cp_apa_i_-azRDbJG85M1P)

I recommend this and these
It’s a set of vials and syringes. I would recommend getting a vial holder as well. That way, you have all the vials in one places and are not as likely to spill. The vials are nice because you can test small batch mixtures. Label the tops of the vials and keep a notebook. Rhodia is good or something else that can show off sheen. This way, you can more down the vial designation, the proportions, the inks used and what the resulting color looks like.

Another thing you would want to learn about is color therapy because a cool yellow mixed with a warm blue will give you a different green than a warm yellow mixed with a cool blue. Rot dye has a great mixing chart that is a wonderful resource for color mixing.

Beyond that, different inks interact and react in sometimes unexpected ways when mixed, which is another reason to have small vials to see what the reactions are and if the ink start to separate or do something else unusual.

Don't remember which ones I actually bought, but this looks like a good deal.

These seem to be better quality, still a good price.