SEMI PV50 - Specification for Impurities in Polyethylene Packaging Materials for Polysilicon Feedstock
This Standard was technically approved by the Photovoltaic Global Technical Committee. This edition was approved for publication by the global Audits and Reviews Subcommittee on December 23, 2013. Available at www.semiviews.org and www.semi.org in January 2014.
This Specification is intended for the quality and the testing method of polyethylene (PE) bags. The quality of PE bags is critical as poor quality PE bags may contaminate polysilicon and cause contamination during transportation. Forming an industry-consensus standard will minimize contamination, control the associated costs and improve communication between supplier and user.
This Standard will cover the quality criteria and the associated test method for impurities contained in PE bags used for polysilicon feedstock packaging. The size and the metal impurities (Al, Zn, Na, Ca, K, Ni, etc.) on both surface and in the body of the bag are defined in this Document.
Referenced SEMI Standards