These measurments may vary due to the clientele of the company, for example a company manufacturing clothing for young women from age sizes: The waist measurement for a women's size twelve is
The higher the HCA(hydroxycitric acid) concentration, the more mileage you are going to get out of the supplement. All brands will contain some amount of the extract from the actual fruit, but the amount of the active substance can vary a lot. There are plenty of fly-by-night products around(pretty much all of the ones in local stores) that only offer a very subpar purity.
That way, assuming a simple two-inch grade, if the standard says size 8 measurements should be and size 10 should be , Company A might use as its basis for size 10, and Company B might assign to a 10, while at the same time Company C could manufacture a size 8 using Clothing bust, waist and hip measurements in inches, with conversions to cm for UK dress sizes, including all the common dress sizes from 8 through to 18 (8, 10, 12, 14, 16, 18). These sizes are also used in Australia and New Zealand. Misses and womens US dress sizes (also used in Canada) with bust, waist and hip measurement tables for Misses sizes 2, 4, 6, 8, 10, 12, 14, 16, 18 & 20, Womens sizes 38, 40, 42, 44, 46, 48, 50, plus a brief explanation of junior, petite and half sizes.