Methyl Chloroform Calibration Standard for GC-MS from Mexico
Certified reference material containing known methyl chloroform concentration for calibrating gas chromatography-mass spectrometry instruments in environmental labs. Used for VOC analysis compliance testing. Falls under 3822.19.0040 as certified reference material with specified solvent.
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
• Include NIST-traceable certificate of analysis specifying concentration and stability data
• Label as 'certified reference material for instrumental calibration only' to avoid reagent confusion
• Monitor for reclassification under Montreal Protocol restrictions on ozone-depleting substances