Some users prefer large or small seeds. In certain situations, seeds of a certain size process or handle better. In the Seed Weight Test, a mechanically counted number of seeds is weighed. Data are reported to the nearest gram. 10 g Seed weight can also be expressed as seeds per lb.
Harder seeds are generally denser.
High-oil corn normally is average or lower in density. The thins test is a variation of size distribution often used by corn dry millers. Hand sieves are used to collect this data. A pre-weighed 250 gram sample is screened with hand screens. The throughs are weighed to compute percent thins, reported to the nearest whole percent.