Silk Test Sieve Cloth for Laboratory Analysis
Precision silk bolting cloth for laboratory test sieves used in particle size analysis. Falls under HTS 5911.20.2000 as technical silk bolting cloth specified in note 8 to chapter 59. Calibrated weave meets ASTM standards for reproducible results.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If permanently mounted in metal sieve frames
Complete laboratory test sieves as instruments classify under chapter 90.
If stainless steel mesh rather than silk
Metal bolting cloth uses specific subheading within technical textiles.
If used as general silk fabric in lab settings
Non-technical silk fabrics default to chapter 51 woven fabric headings.
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Import Tips & Compliance
• Include NIST or ISO calibration certificates proving laboratory-grade precision
• Specify compliance with standards like ASTM E11 for sieve analysis in technical specs
• Separate frame components if imported assembled to avoid set classification issues
Related Products under HTS 5911.20.20.00
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