VWR UV-3100PC Scanning Ultraviolet-Visible Spectrophotometer

Overview

The VWR UV-3100PC is a high-performance scanning ultraviolet-visible (UV-Vis) spectrophotometer engineered for routine quantitative analysis, kinetic studies, and spectral characterization in academic, pharmaceutical, and quality control laboratories. Based on single-beam optical architecture with a fixed grating monochromator, it employs a 1200 lines/mm holographic grating and a CMOS photodiode array detector to deliver stable photometric response across the full 190–1100 nm spectral range. Its design emphasizes operational reliability, regulatory readiness, and ease of integration into standardized analytical workflows—particularly where compliance with USP , ISO/IEC 17025, or GLP-aligned method validation is required.

Key Features

• 5-inch high-resolution LCD touchscreen interface supporting real-time visualization of absorbance spectra, calibration curves, kinetic time courses, and multi-wavelength overlays
• Optimized optical path featuring imported deuterium and tungsten-halogen lamps with ozone-reduced emission profiles and integrated lamp-hour monitoring for predictive maintenance
• Plug-and-play lamp module design—no optical alignment required after replacement of either D₂ or W lamp
• Wide sample compartment accommodating cuvettes from 5 mm to 100 mm pathlength, including standard 10 mm quartz, glass, or plastic cells
• Onboard GLP self-validation function enabling periodic verification of wavelength accuracy (±0.5 nm) and photometric linearity per NIST-traceable standards
• Embedded data storage supporting ≥1,000 spectra, calibration sets, and kinetic datasets with timestamped metadata and user-defined naming conventions
• Direct USB and RS-232 connectivity for printer output and external peripheral integration

Sample Compatibility & Compliance

The UV-3100PC accommodates liquid samples in conventional rectangular cuvettes, flow cells (with optional adapter), and microvolume platforms (via third-party accessories). It supports common solvent systems—including water, ethanol, acetonitrile, and buffered saline—without optical interference up to 3.5 AU. Instrument operation complies with IEC 61010-1 safety standards for laboratory equipment. Its firmware architecture supports audit trail generation (user login, parameter changes, calibration events), aligning with FDA 21 CFR Part 11 requirements when used in conjunction with validated UV-Analyst software and controlled network environments. Routine performance qualification (PQ) can be executed using certified reference materials traceable to NIST SRM 930e (neutral density filters) and SRM 2034 (peak wavelength standards).

Software & Data Management

The included UV-Analyst PC software provides full remote instrument control, spectral subtraction, derivative spectroscopy, concentration mapping via Beer-Lambert regression, and kinetic rate constant calculation (zero-, first-, or second-order models). Data export formats include CSV, TXT, and JCAMP-DX for interoperability with LIMS, MATLAB, or ChemDraw. All measurement sessions are automatically logged with operator ID, date/time stamp, instrument serial number, and environmental conditions (if connected to optional temperature/humidity sensors). Software validation documentation (IQ/OQ/PQ protocols) is available upon request for regulated environments.

Applications

• Quantitative determination of nucleic acids (A₂₆₀/A₂₈₀ ratio) and proteins (Bradford, Lowry, BCA assays) using preloaded method templates
• Stability-indicating assays for active pharmaceutical ingredients (APIs) under ICH Q1A–Q5C guidelines
• Colorimetric enzyme kinetics (e.g., LDH, ALP, G6PDH) with time-resolved absorbance tracking at up to 100 points/second
• Thin-film thickness estimation via interference fringe analysis in transparent substrates
• Water quality testing (NO₃⁻, NO₂⁻, PO₄³⁻) per EPA Method 353.2 and Standard Methods 4500
• Educational use in undergraduate chemistry and biochemistry curricula for spectral interpretation and calibration theory

FAQ

Does the UV-3100PC support dual-beam or ratio referencing?
No—it operates as a single-beam system; however, baseline correction is achieved via automated reference scan prior to sample measurement.
Is the CMOS detector thermally stabilized?
The detector assembly includes passive thermal mass design and ambient temperature compensation algorithms, but no active Peltier cooling.
Can the instrument perform spectral deconvolution or multicomponent analysis?
Yes—UV-Analyst software includes linear regression-based multicomponent quantitation using up to five reference spectra.
What is the minimum detectable absorbance change (noise level)?
Typical RMS noise is ≤0.0005 AU at 546 nm with a 10 mm quartz cell and 1.0 s integration time.
Is NIST-traceable calibration service available directly from VWR?
Yes—certified calibration services including wavelength and photometric accuracy verification are offered through VWR’s Global Service Network with documented uncertainty budgets.