[国外标准] JIS K7250-4-2002 Plastics -- Determination of ash -- Part 4：Polyamides
[国外标准] JIS K7250-2-2002 Plastics -- Determination of ash -- Part 2：Poly (alkylene terephthalate) materials
[国外标准] JIS K7250-1-2006 Plastics -- Determination of ash -- Part 1：General methods