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This is a used lot in excellent condition, comprising two PerkinElmer UV/Vis reference material sets: the B050-7805 Visible Spectrum Calibration Set and the B250-0100 Secondary Standard Set Pharmacopoeia. Both sets are complete with all filters and sealed solution cells present and intact.

The B050-7805 set includes four precision glass filters (holmium oxide wavelength standard H, and neutral density filters F2 and F4) mounted in precision aluminium spring mounts for photometric and wavelength accuracy verification, with calibration traceable to the German PTB.

The B250-0100 Pharmacopoeia set includes six sealed solution cells for verification in accordance with DAB, USP, and European Pharmacopoeia monographs, covering:
• Potassium dichromate (K₂Cr₂O₇) — photometric (ordinate) accuracy
• Holmium perchlorate Ho(ClO₄)₃ — wavelength (abscissa) accuracy
• Potassium chloride (KCl) — stray light
• Toluene in hexane — resolution
• 0.001N HClO₄ and H₂O — reference blanks

The lot includes the PerkinElmer Instruments Reference Material User's Guide (Molecular Spectroscopy) and is presented in its original hard shell protective carry case.

PerkinElmer UV/Vis reference materials are designed to verify the photometric and wavelength accuracy of UV/Vis and UV/Vis/NIR spectrometers, providing the evidence laboratories need to satisfy the most stringent quality audits and regulatory requirements.

The B050-7805 Visible Spectrum Calibration Set comprises four glass filters — including a holmium oxide glass wavelength standard and precision neutral density filters — mounted in aluminium spring mounts and designed for use with standard 10 mm cuvette holders. Calibration is traceable to the German PTB national standards body.

The B250-0100 Secondary Standard Set Pharmacopoeia consists of six sealed solution cells (two reference and four test solutions) covering potassium dichromate for photometric accuracy, holmium perchlorate for wavelength accuracy, potassium chloride for stray light assessment, and toluene in hexane for resolution testing. The set is designed to verify calibration in accordance with DAB, USP, and European Pharmacopoeia monographs on all LAMBDA series UV/Vis spectrometers.

B050-7805 Key Specifications:
Filter count: 4 (glass filters in aluminium spring mounts)
Compatibility: Standard 10 mm cuvette holders, most UV/Vis and UV/Vis/NIR spectrometers
Traceability: German PTB national metrology institute
Accreditation: ISO/IEC 17025 (PerkinElmer UV Reference Materials Laboratory)

B250-0100 Key Specifications:
Cell count: 6 sealed cells (2 reference, 4 test solutions)
Compatibility: Standard 10 mm cuvette holders, most UV/Vis and UV/Vis/NIR spectrometers
Pharmacopa compliance: DAB / USP / European Pharmacopoeia
Recertification: Available from PerkinElmer central recertification laboratory