IRMM-1027 Potassium Dichromate Gravimetric Standard from Mexico
High-purity potassium dichromate certified by IRMM for UV-VIS spectrophotometry calibration, with purity value traceable to the SI. Under HTS 3822.90.00.00 as certified reference for quantitative spectroscopic analysis in chemical metrology labs. Used for molar absorptivity determinations.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Hazardous material class 5.1 oxidizer declaration; provide IRMM purity certificate
• TSCA certification for chromium compounds
• Stable room temperature shipping allowed