The preservative efficacy test (PET) or challenge test is used to test the effectiveness of preservatives in cosmetic products.
Last updated: 14 Sept 2026
273 Views
For inquiries regarding preservative efficacy testing (PET) or challenge testing, please contact the Testing Laboratory, Pathawin Public Company Limited, at 02-9773261-4 ext. 118 or mobile 081-9751595.
Related Content
In-vivo testing is a method of testing the effectiveness of sunscreen in protecting skin from UVB rays on real skin using a group of volunteers. This ensures accurate SPF values that best reflect daily use. This method is an internationally recognized standard (ISO 24444:2019).
For testing inquiries or further information, please contact the Testing Laboratory, Pathawin Co., Ltd. Tel: 02-9773261-4 ext. 118, Mobile: 081-9751595
31 Aug 2026
สรุป (ร่าง) ประกาศกระทรวงสาธารณสุข (ฉบับ 462) พ.ศ.2568 เรื่อง น้ำบริโภคในภาชนะบรรจุที่ปิดสนิท
28 May 2026
