Has anyone found a better cap for API test tubes?

[CT_]

Has anyone found a better cap for the API test tubes?  There's a lot of capping and uncapping for the two part and titration tests that it actually starts to hurt my fingers.  Frankly I'd take a cap that doesn't even hold itself on and just pinch the cap down when shaking over how tight these are.

[Andy's Fish Den]

honestly, when I am testing, I was my hands off good with just warm water, no soap, and use a finger over the end to invert and shake. I be sure to use a different finger for each test or wash my hands between tests. 

[Solidus1833]

There are some 3rd party test tubes which have twist-on caps, which I rather like. Just do a quick search for em. 

[DShelton]

There are a variety of TT caps that are cheap on AMZ. Similar to these;

 

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Red, Bag of 1000 https://smile.amazon.com/dp/B086WQDP7N/ref=cm_sw_r_cp_api_glt_fabc_2ZWMKWR19G1R55JBTW1Q?_encoding=UTF8&psc=1

[KBOzzie59]

Yes, my thumb.  Wear a glove if you have a sensitivity to the chems, rinse thoroughly or new glove when changing tests.

[MickS77]

I'd think something like these would do the trick and be easier to remove. A local hardware store may sell them individually instead of buying a whole pack.