RA—50半自动生化分析仪（德国产）在使用过程中常出现三种小故障，经过不太复杂的处理与调整后均恢复正常功能，现将处理过程介绍如下，供同道参考。1光学系统自拉不能通过仪器在使用过程中团试剂，标本所含的一些有机物．印染料、脂类及蛋白质等很容易附着于比色地上，影响光 RA-50 semi-automatic biochemical analyzer (German) often occurs in the course of the use of three kinds of glitches, after less complex processing and adjustment are restored to normal functions, now the process is described below, for the same reference. 1 Optical system self-pulling can not pass through the instrument during the use of reagents, specimens contained in some of the organic matter. Printing dyes, lipids and proteins are easily attached to the colorimetric ground, affecting light