Bottle cap size?

[Kirk Gittings]

I have some nice amber bottles from some cold brew coffee that I buy. They would be useful for storing photo chemistry but they have metal caps which IME tend to corrode. I was thinking about trying to find plastic caps online but I can't figure out how to determine the size?

[IanG]

Kirk, I save plastic caps that I think may fit other bottles but there don't appear to be standards. It's pot luck it seems.

Ian

[Jim Jones]

Wrap Saran wrap over the top of the bottle before screwing the metal cap on.

[Jac@stafford.net]

Been there! Try http://www.qorpak.com/pages/HowtoSel...pforyourBottle
Scroll down for free printable measure

[koraks]

Wrap Saran wrap over the top of the bottle before screwing the metal cap on.

This, or wrap two layers of saran wrap around a cork that's cut to fit the bottle and use that as as stopper. Note that the saran wrap will likely be damaged when screwing on a cap, so you'd have to replace it often.

[Thalmees]

Wrap Saran wrap over the top of the bottle before screwing the metal cap on.

+1, and use until it starts to develop corrosion.
.
Another idea. I use my dark and thick glass of my Antacid syrup.
I know lots of photographers use antacid.
Gaviscon from GSK, is the best heartburn medicine for me, thick juice and instant relieve.
I actually "drink" it, and not alone in the house.
The bottles are thick dark brown bottle glass, of 300ml, could accommodate 350ml, and have a tough air tight plastic cap.
One of the best bottles I've seen or used.
Sorry if this outside the original post.

[barnacle]

Except... "Hi dear, this Gaviscon tastes a bit odd, and it's not as thick as usual. Is it a new flavour?"

Neil

[Bob Salomon]

Kaiser makes slip on Lens caps in plastic from 17mm to over 100mm. Go to their site and check the sizes and use a good mm ruler or caliper to measure the size of your bottles.
Or check with Crown Cork and Seal. They make most of the bottle caps they own Alcoa.

[Kirk Gittings]

Been there! Try http://www.qorpak.com/pages/HowtoSel...pforyourBottle
Scroll down for free printable measure

I'll give that a try. Thanks

[Kirk Gittings]

This, or wrap two layers of saran wrap around a cork that's cut to fit the bottle and use that as as stopper. Note that the saran wrap will likely be damaged when screwing on a cap, so you'd have to replace it often.

I thought about corks.
Do you know anything about how cork sizes are measured?