Storage and shelf life recommendations for Primary and Secondary Pertex® Grades
Pertex’s Primaries/Pertex’ 主分散剂
Pertex® Primaries should be stored away from wet areas and naked flames. Ingress of moisture should be avoided to maintain product quality.
As supplied, the product should remain fit for use for 12 months from the date of delivery. Beyond that date, the material should still be fit for use but we would advise that it is good practise to test the material before use.
All aqueous solutions of polyvinyl alcohol and HPMC based suspending agents, if stored for long periods at elevated temperatures, are prone to mould and bacterial attack.
Pertex®主分散剂应储存在远离潮湿区域和明火的仓库中；储存区域应避免湿气进入，以保持产品质量。
保质期：Pertex主分散剂应自交货之日起12个月内使用。超过该日期，物料仍应该可以使用，但我们建议在使用前对该物料进行测试。
所有主分散剂级别的聚乙烯醇和HPMC配制好的水溶液，如果在高温下长时间储存，容易发霉和受到细菌的攻击。
The Pertex® primary grades are:/ Pertex 主分散剂品种如下：
Pertex® 725, Pertex® 735, Pertex®745, Pertex®DS72, Pertex® 8049, Pertex® 8035, Pertex® 8032, Pertex® 8848, Pertex® H 50 and Pertex® K100.
Pertex’s Secondaries/Pertex 辅助分散剂
Pertex® Secondaries are stable under normal storage conditions, but extremes of temperature should be avoided. The material exhibits a separation temperature at the cloud point, above which two layers are formed. If separation occurs the material can be reconstituted by stirring at a temperature below the cloud point. Pertex® Secondaries are freeze/thaw stable, however at low temperatures the viscosity of the product increases significantly.
Pertex®液体辅助分散剂在正常储存条件下是稳定的，但应避免极端温度。该物料在浊点温度处表现出相分离现象，在此温度条件下会形成两层。
如果发生相分离，物料可以在低于浊点的温度下通过搅拌重新恢复稳定的水溶液。Pertex®辅助分散剂产品具有冻融稳定性，但在低温下，产品的粘度会显著增加。
Pertex® Secondaries should be stored in sealed containers as received. In this condition, the product remains fit for use for 12 months from the date of delivery.Beyond that date, the material may still be fit for use, but we would advise that it is good practice to test the material.
With normal standards of plant housekeeping there is no need to add bactericides. If circumstances dictate the use of bactericides then any of those which are compatible with PVC polymerisation or application may be used. If equipment becomes infected, dilute hypochlorite should be used for sterilisation.
Pertex®辅助分散剂应该储存在密闭的原包装中。在这种条件下，产品应该在自交付之日起12个月内使用；超过这个期限，物料一般仍然可以使用，但我们建议使用前最好对物料进行测试。按照正常的产品管理标准，辅助分散剂液体不需要添加杀菌剂。如果发生情况，要求使用杀菌剂，则可以使用任何与PVC聚合或应用相容的杀菌剂。
如果设备被感染，应使用稀释的次氯酸盐消毒。
The Pertex® secondary grades are:/Pertex辅助分散剂品种：
Pertex ® 552, Pertex®453, Pertex® 430.
