The Capsule Filling Capacity table is shown as below.  Size #000 is our largest capsule and its filling capacity is 1.35ml.  Size #4 is our smallest capsule and its filling capacity is 0.21ml.  The filling capacity for different size of capsules is depends on the density of capsule contents.  When the density is bigger and the powder is finer, the filling capacity is larger.  When the density is smaller and the powder is bigger, filling capacity is smaller. The most popular size in global is #0, for example, if the specific gravity is 1g/cc, the filling capacity is 680mg.  If the specific gravity is 0.8g/cc, the filling capacity is 544mg.  Best filling capacity requires suitable capsule size in order to perform smoothly during filling process. If filling too much powder, it will let capsule become un-locked situation and content leakage. Normally, many health foods contain compound powders, so their particles have different sizes.  Therefore, choosing specific gravity at 0.8g/cc as a filling capacity standard is much safer. Two-piece capsules have been made from gelatin since they were originally patented by James Murdock in 1847. Gelatin (also spelt Gelatine) is an animal protein which what know as Generally Recognised as Safe (GRAS) in pharmaceutical and food consumption by the majority of international regulatory bodies. Our empty gelatin capsules are GMO free and derive from completely natural sources. Gelatin capsules are usually derived from beef or pork along with water and a plasticizing agent such as glycerine to provide durability. Gelatin is an essential component for human consumption and development.The main ingredient of gelatin is protein which is composed by amino acids. We only import raw materials from world-class manufacturers that are free from Bovine Spongiform Encephalopathy (BSE) and Transmitting Animal Spongiform Encephalopathy (TSE). The origin of raw materials is approved as “Generally Recognized as Safe” (GRAS). Hence the quality of YQ gelatin capsules are safe and reliable. 1.BSE Free, TSE Free, Allergen Free, Preservative Free, Non–GMO 2.Odorless and tasteless. Easy to swallow 3.Manufactured in accordance with NSF c-GMP / BRCGS guidelines 4.Excellence filling performance on both high-speed and semi-automatic capsule filling machine 5.YQ gelatin capsule has a wide range of applications for pharmaceutical and nutraceuticals industry.* NSF c-GMP, BRCGS, FDA, ISO9001, ISO14001, ISO45001, KOSHER, HALAL, DMF Registration