Methyl Chloroform Calibration Standard for GC-MS from China
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 — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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