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化驗室離心機離心方法

發布日期：2022-10-09 點擊率：88

   

化驗室離心機離心方法主要分制備離心法和分析離心法兩大類。

一、制備離心法：

1、差速離心法：

利用離心力分離沉降系數不同的物質的一種動力學方法，主要用于顆粒大小和密度差異較大的物質的離心分離。

2、密度梯度離心法：

（1）速率區帶離心法：一般用于顆粒大小相異而密度相同的物質的離心分離。

（2）等密度區帶離心法：一般用于顆粒大小相近而密度差異較大的物質的離心分離。

二、分析離心法：

1、沉降速度離心法：主要用于樣品純度檢查。

2、沉降平衡離心法：常用的測量絕對分子量的方法。

 

 

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