Smallest seeded varieties are Oklahoma 12 and Oriental. Larger seeded types are Jumbo and Berken. A variety called Chinese Red or Chinese Red Adzuki is sometimes substituted for adzuki bean even though it is not an adzuki. Any container that provides drainage, aeration is rustproof and easy to sanitize is adequate. Stainless steel or plastic is most commonly used.
Size depends on the scale of the sprout operation and the amount of been seed to be sprouted.
Mung beans increase in size about 6 fold when sprouting is completed. This can be used to determine the volume or pounds of seed needed and the size of sprouting container required. Some sprouting operations will use perforated bottom plastic trays in which the sprouts are to be marketed. This is preferred or even required by some buyers. Under proper conditions 4-5 days are required from the start of the sprouting process until the sprouts are ready for consumption.