Catalog Number - PQA-HOX-A

The PQA‑HOX‑A Wavelength Calibration Solution is a high‑volume, NIST‑traceable Holmium Oxide (HOX) standard, designed for precise calibration and long‑term verification of wavelength accuracy in HPLC UV detectors and UV‑Vis spectrophotometers.

This 60 mL format is ideal for laboratories performing frequent instrument qualification, providing extended usability compared to smaller volumes while maintaining consistent, certified absorbance characteristics.

Prepared as 4% holmium oxide in 10% perchloric acid, this solution ensures reliable, repeatable wavelength calibration across critical UV detection ranges.

Holmium Oxide – Primary Wavelength Calibration Standard

• Internationally recognized primary wavelength calibration standard

• Supported by NIST and global regulatory bodies

• Provides 14 certified absorbance peaks

Certified Wavelength Range

• 241 nm to 640 nm

✅ Enables accurate, traceable wavelength calibration for UV and UV‑Vis systems

Extended Wavelength Capability

• When used with caffeine standards, allows calibration down to:

  • ~205 nm

✅ Supports low‑wavelength detector validation for advanced analytical methods

Performance Qualification Applications

Used for calibration and verification of:

• Wavelength accuracy

• UV detector performance

• UV‑Vis spectrophotometer validation

• HPLC system suitability testing

✅ Supports USP <1058> Analytical Instrument Qualification (AIQ)

Compatibility & Use Cases

• Compatible with:

  • HSQ™ Qualification Kits

  • PQ™ Qualification Kits

  • UV‑Vis qualification systems

• Ideal for:

  • High‑frequency qualification programs

  • Standalone detector calibration workflows

✅ Larger volume supports extended use in busy QC and validation labs

NIST Traceability & Compliance

• Manufactured to NIST SRM‑equivalent standards (SRM‑02034)

• Provides traceable and reproducible absorbance values

• Ensures audit‑ready calibration documentation

✅ Essential for regulated environments and GMP laboratories

Shelf Life & Handling

• Supplied with minimum 6‑month shelf life upon delivery

• Two‑year expiration from date of manufacture

• Designed for frequent, routine use in qualification workflows

✅ Optimized for continuous calibration and compliance programs

Workflow Advantages

Extended Use Efficiency

• Larger 60 mL volume reduces reorder frequency

• Supports high‑throughput qualification environments

Accurate Calibration

• Ensures reliable wavelength verification and detector performance

• Improves data accuracy and analytical confidence

Compliance Support

• Meets USP <1058> requirements

• Enables ongoing instrument qualification between audits

Typical Applications

• HPLC UV detector calibration

• UV‑Vis spectrophotometer wavelength calibration

• USP <1058> compliance programs

• Analytical Instrument Qualification (AIQ)

• Pharmaceutical QC and validation labs

• Routine detector verification workflows

Important Usage Notes

• Designed for wavelength calibration and verification only

• Use according to validated SOPs for qualification workflows

• Combine with standards (e.g., caffeine) for extended wavelength calibration

• Store properly to maintain solution integrity and accuracy