Nute H D
J Forensic Sci. 1975 Oct;20(4):668-73.
The construction and use of the apparatus required for an improved density gradient system is described. The system is a combination of existing procedures, resultin in a system more suited for forensic science soil studies. The advantages consist of rapid, simultaneous filling of several tubes with identical density gradients and of the capability to remove individual fractions from the tubes for further study. Disadvantages are that an extra quantity of liquids is required and only a preset number of tubes can be filled at one time.
本文描述了一种改进的密度梯度系统所需仪器的构建与使用方法。该系统是现有程序的组合，形成了一个更适合法医学土壤研究的系统。其优点包括能够快速、同时地向多个试管中填充相同的密度梯度，以及能够从试管中取出单个组分进行进一步研究。缺点是需要额外的液体量，并且一次只能填充预设数量的试管。
