Laboratory pure water supply mode / 实验室纯水供应模式
Central pure water supply mode / 中央纯水供应模式
Central pure water supply mode refers to setting pure water production device. Water for laboratory use is transported to each water demanding point through water supply pipelines, providing direct access to laboratory pure water or ultra pure water, whether it is a single laboratory or an experimental building.
中央纯水供应模式是指设置纯水生产装置，实验室用水通过供水管道输送到各个实验室用水点，无论是单个实验室还是一幢实验楼直接获取实验室纯水或超纯水。
Advantages 优点：
1. Lower running cost, centralized management.
   运行成本低，管理集中。
2. Collective use, no possibility of machine standing idle.
   集体使用，不存在机器闲置可能。
3. Large production, water is delivered by pipe network, many water supply points in one laboratory.
   产量大，用水采用管网化，同一实验室多点取水。
Disadvantages 缺点：
The system must ensure long-term safe operation, otherwise there will exist water-breaking risk.
   系统必须保证长期安全运行，否则存在断水风险。
Decentralized water supply mode / 分散纯水供应模式
Decentralized water supply mode refers to setting water purification machine or purified water on each water supply point of laboratory.
分散纯水供应模式是指在实验室各用水点位置设置纯水机或成品水。
Advantages 优点：
People have independent access to instruments, and instruments have high utilization ratio.
仪器有单独的使用权，使用率高。
Disadvantages 缺点：
1. Operating cost is high, management is decentralized, and consumption cost is relatively higher.
运行成本高，管理分散，消耗成本相对较高。
2. Fixed-point installation on desk, fixed water supply points. Small production, low flow-rate and low efficiency.
桌面定点台式安装，定点取水，机型产量小，流量小，工作效率低。
3. If each experimental group purchases separately, then the total amount of investment on this product will be very high, and will result in vacancy rate increasing with the different working conditions of each experimental group, proving unfavorable for the maximization of investment efficiency.
若每个实验组单独购买，那么该类产品上的投资总额就会非常高，而且会随着每个实验组工作情况不同而导致空置率提高，不利于投资效率最大化。
With the development of laboratory equipment, pipe network and centralization of laboratory pure water supply have become the developing direction of large scale experimental buildings.
随着实验室装备的发展，实验室供水的管网化与集中化已成为大型实验楼纯水供应的发展方向。