干粉尺度标准微粒，用于标粉体颗粒物检测仪器。本系列产品用于标粉体粒径或粒子计数检测仪器的标。每个滴瓶中包装了1公克（gram）的DRI-CAL 干粉微球， 便于直接将微球分散于干粉样品室中，但不适于直接分散到液体媒介中。

They are available as dry powders and can be easily suspended in aqueous media if desired. The product line consists of a large assortment of uniform, red or black particle sies between 50µm and 500µ

They are available as dry powders and can be easily suspended in aqueous media if desired. The product line consists of a large assortment of uniform, red or black particle sies between 50µm and 500µ

They are available as dry powders and can be easily suspended in aqueous media if desired. The product line consists of a large assortment of uniform, red or black particle sies between 50µm and 500µ

They are available as dry powders and can be easily suspended in aqueous media if desired. The product line consists of a large assortment of uniform, red or black particle sies between 50µm and 500µ

These ChromoSphere polymer particles are internally and deeply dyed with intense red or black dye colors that result in very high contrast and visibility relative to most background materials.