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30 September 2009 @ 01:07 am
Title pretty much sums it up. I'm interested in getting another cup, but I would like to be able to compare capacities. The one capacity I haven't found is the Diva Cup 1 (or small) turned inside out. I would measure it myself, but I don't think I have anything precise enough.

I'd love a larger capacity with a shorter length (inside out diva1 is fine, regular way is so not LOL).
hellgamatichellgamatic on September 30th, 2009 07:26 am (UTC)
I have a little shotglass type thing with fl. oz marked on the side in increments of .1 oz. I also have the small size of Diva cup. So, I decided to figure this out!

Right side out, filled all the way to the rim, then poured into the glass: exactly 1 fluid ounce.

Inside out, stem trimmed all the way off, same procedure: slightly OVER 1 fluid ounce. Like, maybe .02 oz?

I checked three times for each way, drying the glass and the cup out in between for extra accuracy. I guess maybe inside out the thickness of the base pulls it out wider down there, and makes for more capacity? *shrug* I'm not a scientist or a mathematician or any of the other specialties that might be able to figure this one out, but yeah. Ever so slightly higher capacity when inside out.
m03m on September 30th, 2009 05:03 pm (UTC)
Was the not-inside-out capacity measured to the rim as well, or maybe to the holes?
hellgamatichellgamatic on September 30th, 2009 06:54 pm (UTC)
Nope! It was all the way to the rim both times.
m03m on September 30th, 2009 07:19 pm (UTC)
Ah! Well, then your observation must be correct. It's a bit unexpected.
accphotography on September 30th, 2009 07:36 pm (UTC)
If you look at the base of the Diva right side out, then look at it inside out, I'm not really greatly surprised that it holds more. Another thing that might effect capacity measurements when inside out is the length of the stem. Mine is completely trimmed off. I don't think it would make a BIG difference, but having an fully in tact stem will take some capacity.

How about the length of the Diva1 inside out? I don't trust myself to measure that with a simple ruler. Anyone got a caliper? LOL!

foxdragon415 on September 30th, 2009 09:40 pm (UTC)
My theory on the inside-out having a larger capacity is this:

The surface area on the outside is larger than the surface area on the inside. when you turn it inside out, the (new) outside is a little more likely to stretch to accommodate the turning than than the inside is to squish down.

I thought about this quite a while last night (It's my way with mathematical/logical questions), and that's what I came up with. Also, I believe inside-out would be slightly wider than normal for these same reasons, but I can't test it because the only cup I have is the small MeLuna, while I am sure I will never need to make any short and don't want to risk stressing the material.
accphotography on September 30th, 2009 08:10 pm (UTC)
Well I'm thoroughly disappointed. I was fairly certain I was going to try a Meluna... until I read that the large Meluna holds less than the small Diva. :-(

I wish I could find a shorter cup with a higher capacity than Diva small. However I only need that higher capacity the first day or so... so I'm toying with the idea of getting a large Meluna for the other days.

I need to do a search for people who have directly compared the Meluna to the Diva and see what the biggest differences are.