Discussions tagged with 'challenge-test' MattTheChemist Another non-preserved product… Pattsi replied 2 years, 9 months ago 4 Members · 6 Replies Science Dr_Sara Preservative Efficacy Testing/Challenge Test Dr_Sara replied 4 years, 3 months ago 3 Members · 3 Replies Cosmetic Industry Dr_Sara Naticide, can Parfum (INCI) really be used as a preservative? chemicalmatt replied 4 years, 4 months ago 4 Members · 11 Replies Formulating Viewing 1 - 3 of 3 discussions