90瓷(ci)白色研磨(mo)(mo)缽(bo)(bo)質(zhi)地硬(ying)脆，缽(bo)(bo)型對稱(cheng)性好，缽(bo)(bo)中光(guang)亮(liang)平滑，使被碾(nian)(nian)(nian)磨(mo)(mo)物質(zhi)不(bu)易粘附在(zai)(zai)缽(bo)(bo)體內表(biao)面，被研磨(mo)(mo)物質(zhi)在(zai)(zai)缽(bo)(bo)中可以均勻(yun)分布開，利于進一(yi)步的碾(nian)(nian)(nian)磨(mo)(mo)，并(bing)使被碾(nian)(nian)(nian)磨(mo)(mo)顆粒得到(dao)均等的碾(nian)(nian)(nian)磨(mo)(mo)機(ji)會，有(you)利于得到(dao)細膩均勻(yun)的粉(fen)末顆粒。是(shi)碾(nian)(nian)(nian)磨(mo)(mo)機(ji)工作過程中*的配件(jian)，可用來碾(nian)(nian)(nian)磨(mo)(mo)硬(ying)度(du)在(zai)(zai)其硬(ying)度(du)以下的任意(yi)物質(zhi)，且不(bu)會嵌入到(dao)研磨(mo)(mo)缽(bo)(bo)內。

　　按被進行研(yan)(yan)(yan)磨(mo)固(gu)(gu)體(ti)的(de)(de)(de)特性和產品(pin)的(de)(de)(de)粗細(xi)水平采用不(bu)一(yi)(yi)樣材質的(de)(de)(de)研(yan)(yan)(yan)缽。通常情況用瓷制或玻璃制研(yan)(yan)(yan)缽，進行研(yan)(yan)(yan)磨(mo)堅硬的(de)(de)(de)固(gu)(gu)體(ti)時使用鐵制研(yan)(yan)(yan)缽，需要十分仔細(xi)地進行研(yan)(yan)(yan)磨(mo)較(jiao)少的(de)(de)(de)藥品(pin)時使用瑪瑙或氧化鋁制的(de)(de)(de)研(yan)(yan)(yan)缽。進行研(yan)(yan)(yan)磨(mo)的(de)(de)(de)基(ji)本原理是被進行研(yan)(yan)(yan)磨(mo)的(de)(de)(de)物(wu)品(pin)硬度要比(bi)進行研(yan)(yan)(yan)磨(mo)缽體(ti)小，辨別(bie)較(jiao)好(hao)的(de)(de)(de)方式是就拿那物(wu)品(pin)在(zai)研(yan)(yan)(yan)缽上劃(hua)一(yi)(yi)下，能把玻璃研(yan)(yan)(yan)缽劃(hua)出痕的(de)(de)(de)肯定不(bu)可以磨(mo)。

　　進(jin)(jin)(jin)行(xing)(xing)(xing)研(yan)(yan)(yan)磨操作時，研(yan)(yan)(yan)缽(bo)應放在(zai)(zai)不(bu)易滑(hua)動的(de)(de)物體上，研(yan)(yan)(yan)杵(chu)應維持(chi)垂直(zhi)狀態。大塊的(de)(de)固體只可(ke)以(yi)先壓(ya)碎(sui)再(zai)進(jin)(jin)(jin)行(xing)(xing)(xing)研(yan)(yan)(yan)磨，不(bu)可(ke)以(yi)用研(yan)(yan)(yan)杵(chu)直(zhi)接搗(dao)碎(sui)，否則(ze)會損(sun)壞研(yan)(yan)(yan)缽(bo)、研(yan)(yan)(yan)杵(chu)或(huo)將固體濺(jian)出。易爆物質只可(ke)以(yi)輕輕壓(ya)碎(sui)，不(bu)可(ke)以(yi)進(jin)(jin)(jin)行(xing)(xing)(xing)研(yan)(yan)(yan)磨。進(jin)(jin)(jin)行(xing)(xing)(xing)研(yan)(yan)(yan)磨對皮膚有(you)腐蝕性的(de)(de)物質時，應在(zai)(zai)研(yan)(yan)(yan)缽(bo)上蓋上厚紙片或(huo)塑(su)料(liao)片，隨后(hou)在(zai)(zai)其(qi)(qi)中央開孔，插進(jin)(jin)(jin)研(yan)(yan)(yan)杵(chu)后(hou)再(zai)行(xing)(xing)(xing)進(jin)(jin)(jin)行(xing)(xing)(xing)研(yan)(yan)(yan)磨，研(yan)(yan)(yan)缽(bo)中盛放固體的(de)(de)量不(bu)能超(chao)過其(qi)(qi)容(rong)量的(de)(de)1/3。