Practical instrument standards and calibration materials are designed for the qualification and verification of instrument cotton testing levels.
Standards Regulations & Order Forms:
- 7 CFR 28 - Cotton Classing, Testing, and Standards
- HVI Color and Trash Calibration Standard Order Form
Universal HVI Cotton Color Standards are instrument standards designed for the qualification and verification of instrument cotton testing levels for Rd (reflectance) and +b (yellowness). Each standard is comprised of twelve (12) cotton samples representing a broad color range. Each cotton sample in the standard has established standard reference values for Rd and +b. Approximate Weight: 10 pounds each.
HVI Color Calibration Tiles are a set of tiles designed for the calibration of cotton testing instruments for the measurement of Rd (color reflectance) and +b (degree of yellowness). The tile sets are comprised of five (5) ceramic tiles covering a range of Rd and +b measurements. Each tile has established standard values for Rd and +b. The color tile sets are instrument and illumination specific (Xenon or Incandescent). Instrument type and illumination type must be specified before ordering. Approximate Weight: 2 pounds – tiles only, 4 pounds with storage box.
Universal HVI Trash Standards (Cotton Images Under Glass) are instrument standards designed for the qualification and verification of instrument cotton testing levels for trash percent area and trash particle count. Each standard is comprised of twelve (12) images of cotton mounted under glass. The set of images represent a broad range of trash percent area and trash particle count. Each image in the standard has established standard reference values for trash percent area and trash particle count. Approximate Weight: 5 pounds each.
HVI Trash Calibration Tile is one (1) tile designed for the calibration of cotton testing instruments for the measurement of trash percent area and trash particle count. The tile is comprised of an image of patterned dots mounted under glass and has established standard values for trash percent area and trash particle count. The trash tile is instrument and illumination specific (Xenon or Incandescent). Instrument type and illumination type must be specified before ordering. Approximate Weight: less than 1 pound.