水处理剂 异噻唑啉酮衍生物检测

HG/T 3526-2011工业循环冷却水中硝酸盐的测定.磺基水杨酸分光光度法

重要提示：本标准使用的强酸;强碱具有腐蚀性，使用时应注意。溅到身上时，用大量水冲洗。本标准规定了采用磺基水杨酸分光光度法测定工业循环冷却水中硝酸盐的方法。本标准适用于工业循环冷却水中硝酸盐含量为0.1 mg/L～10.0 mg/L水样的测定。

HG/T 3657-2017水处理剂 异噻唑啉酮衍生物

本标准规定了水处理剂异噻唑啉酮衍生物的要求、试验方法、检验规则以及标志、包装、运输、贮存。本标准适用于水处理剂异噻唑啉酮衍生物，该产品主要用作工业水处理中的杀生剂，还可应用于涂料、造纸、油田、农业等领域。

DIN EN 12828-2014建筑物中的供暖系统.水基供暖系统的设计

This European Standard specifies design criteria for water based heating systems in buildings with a maximum operating temperature of up to 105 °C. In case of heating systems with maximum operating temperatures over 105 °C other safety aspects than those described in 4.6 may apply. The other clauses of this European Standard are still valid for those systems.This European Standard does not amend product standards or product installation requirements. This standard covers the design of:? heat supply systems;? heat distribution systems;? heat emission systems;? control systems.This European Standard takes into account heating requirements of attached systems (e. g. domestic hot water, process heat, air conditioning, ventilation) in the design of a heat supply, but does not cover the design of these systems.This European Standard does not cover requirements for installation or commissioning or instructions for operation, maintenance and use of water based heating systems.This European Standard does not cover the design of fuel and energy supply systems.