[Nathan Zachary]

a kilo is a unit of weight. I Kg = 2.2 lbs. (approx)

I don't go to the store and buy a mass of steak, I buy a kilo of steak. (or 500g if I want about a lb.)
I go to the lake and catch a mess of fish.

Oh and back to the title of the article:

The international kilogram conundrum[Weights have mysteriously fluctuated]

Not masses have fluctuated.

[coloradan]

Kindly tell me then, what is the SI unit of mass? (Since you’re the expert, and all.)

[bvw]

Since mass is measured by weight, it is the same thing to speak of. Who knows? Maybe some brownian motion in the space-time of big G.

Or maybe related to minute isotope and nuclides within an isoptope mix differences between the bars.

[doc30]

This article is about how the masses of the standard kilograms have fluctuated on the parts per billion scale and the need to replace them with standards based on physical constants and not even more arbitrary artifacts. No one cares about the weight since that isn’t what the kilogram measures. You are just polluting this thread with pure garbage.