Certified reference materials
Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials: > Certified reference materials
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Products classified under HTS 3822.90.00.00
NIST SRM 1577c Bovine Liver Standard
This certified reference material from NIST consists of powdered bovine liver certified for trace element concentrations like arsenic, cadmium, and mercury. It falls under HTS 3822.90.00.00 as a certified reference material used for calibrating analytical instruments in environmental and toxicological labs. The certification ensures traceability to international standards for accurate quantitative analysis.
EPA Method 1631 Mercury Calibration Standard
A solution-based certified reference material containing known mercury concentrations at ppb levels, certified by EPA for validating ultra-trace mercury analysis methods. Classified under HTS 3822.90.00.00 due to its certification for regulatory compliance testing in water and environmental samples. Used to ensure accuracy in CVAFS and CVAAS instrumentation.
BCR-186 Skimmed Milk Powder Reference Material
European Commission's BCR certified reference material of skimmed milk powder, certified for pesticide residues and heavy metals analysis in dairy products. Falls under HTS 3822.90.00.00 as it's prepared specifically for food safety laboratory quality control with metrologically traceable values. Essential for validating GC-MS and ICP-MS methods in food testing.
NIST SRM 972a Vitamin D Metabolites in Human Serum
Certified reference material of human serum with accurately determined concentrations of 25-hydroxyvitamin D2 and D3 metabolites. Classified under HTS 3822.90.00.00 for its role in standardizing clinical assays for vitamin D deficiency testing. Certified values traceable to SI units for LC-MS/MS method validation.
IRMM-1027 Potassium Dichromate Gravimetric Standard
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.
BAM M320i Gasoline Reference Fuel
Certified reference material of gasoline certified by BAM for benzene, aromatics, and oxygenate content determination by GC-FID. Falls under HTS 3822.90.00.00 for regulatory fuel quality testing laboratories. Traceable values ensure compliance with fuel specifications.
NIST SRM 3186 Glycerin (99.5% + Purity)
Ultra-high purity glycerin certified by NIST for quantitative NMR and Karl Fischer water content analysis. Classified HTS 3822.90.00.00 as certified reference for pharmaceutical and food grade glycerol purity verification. Certified purity and impurity profile.
LGC QC5021 Dioxin Calibration Standard
Certified solution containing 17 2,3,7,8-substituted PCDDs/PCDFs at pg/mL levels for HRGC/HRMS dioxin analysis. Under HTS 3822.90.00.00 as certified reference material for environmental PCDD/F monitoring. Certified for TEQ calculations per EPA Method 1613.
NMIJ CRM 7804a Rice Flour Heavy Metals
Japanese NMIJ certified rice flour matrix certified for arsenic, cadmium, and lead content for food safety testing. HTS 3822.90.00.00 classification for certified food contaminant reference materials. Used in ICP-MS validation for rice export compliance.
Sigma-Aldrich CCR603 Glyphosate in Water
Certified reference solution of glyphosate and AMPA metabolites at ng/mL levels for LC-MS/MS water analysis. Falls under HTS 3822.90.00.00 as certified for EPA Method 547 pesticide residue monitoring. Traceable to ISO 17025 accredited values.