Progesterone Hormone Reference Material NIST from China
NIST-traceable progesterone reference material SRM 2894 for calibration of hormone assays in clinical laboratories. Pure steroidal hormone standard under HTS 2937.23.5020 for its primary hormonal chemical definition.
Duty Rate — China → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include NIST SRM certificate with certified purity value and uncertainty; critical for reference material duty treatment
• Declare as 'Certified Reference Material' with specific analytical certificate numbers for preferential laboratory chemical treatment
• Small package sizes (<100mg); ensure tamper-evident seals and complete chain-of-custody documentation