USP General Chapter 关于注射剂的阐述中，有一个关于Pharmacy Bulk Package的定义，请问是指什么？
指教
原文如下：
……
Definitions
PHARMACY BULK PACKAGE
A Pharmacy bulk package is a container of a sterile preparation for parenteral use that contains many single doses. The contents are intended for use in a pharmacy admixture program and are restricted to the preparation of admixtures for infusion or, through a sterile transfer device, for the filling of empty sterile syringes.
The closure shall be penetrated only one time after constitution with a suitable sterile transfer device or dispensing set which allows measured dispensing of the contents. The Pharmacy bulk package is to be used only in a suitable work area such as a laminar flow hood (or an equivalent clean air compounding area).
Designation as a Pharmacy bulk package is limited to preparations from Nomenclature categories 1, 2, or 3 as defined above. Pharmacy bulk packages, although containing more than one single dose, are exempt from the multiple-dose container volume limit of 30 mL and the requirement that they contain a substance or suitable mixture of substances to prevent the growth of microorganisms.
Where a container is offered as a Pharmacy bulk package, the label shall 药物散装包装
字面上是这样，但是具体是个什么概念呢？
是说很多种不同的成分，放到一个大包装里，用时再混到一起吗？有这种类型的产品吗？
请参照列出的上下文，帮忙解释一下。
是无菌制剂的一种包装形式 VIAL, PHARMACY BULK PACKAGE
FDA 代号是 VIALPHR
根据定义研究一下sterile transfer device 你就会明白,看看下面的网站
这样的品种多的很,随便检索就可以找到
（缩略图，点击图片链接看原图）
明了，！
指教
原文如下：
……
Definitions
PHARMACY BULK PACKAGE
A Pharmacy bulk package is a container of a sterile preparation for parenteral use that contains many single doses. The contents are intended for use in a pharmacy admixture program and are restricted to the preparation of admixtures for infusion or, through a sterile transfer device, for the filling of empty sterile syringes.
The closure shall be penetrated only one time after constitution with a suitable sterile transfer device or dispensing set which allows measured dispensing of the contents. The Pharmacy bulk package is to be used only in a suitable work area such as a laminar flow hood (or an equivalent clean air compounding area).
Designation as a Pharmacy bulk package is limited to preparations from Nomenclature categories 1, 2, or 3 as defined above. Pharmacy bulk packages, although containing more than one single dose, are exempt from the multiple-dose container volume limit of 30 mL and the requirement that they contain a substance or suitable mixture of substances to prevent the growth of microorganisms.
Where a container is offered as a Pharmacy bulk package, the label shall 药物散装包装
字面上是这样，但是具体是个什么概念呢？
是说很多种不同的成分，放到一个大包装里，用时再混到一起吗？有这种类型的产品吗？
请参照列出的上下文，帮忙解释一下。
是无菌制剂的一种包装形式 VIAL, PHARMACY BULK PACKAGE
FDA 代号是 VIALPHR
根据定义研究一下sterile transfer device 你就会明白,看看下面的网站
这样的品种多的很,随便检索就可以找到
（缩略图，点击图片链接看原图）
明了，！