DLAB SP-V1100 Ultraviolet-Visible Spectrophotometer
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Architecture | Single-Beam |
| Wavelength Range | 320–1100 nm |
| Spectral Bandwidth | 2.0 nm |
| Wavelength Accuracy | ±0.5 nm |
| Wavelength Repeatability | ≤0.3 nm |
| Stray Light | ≤0.05% T @ 360 nm |
Overview
The DLAB SP-V1100 Ultraviolet-Visible Spectrophotometer is a precision single-beam optical instrument engineered for quantitative and qualitative analysis of absorbance, transmittance, and concentration across the ultraviolet and visible spectral regions (320–1100 nm). Based on Beer–Lambert law principles, it employs a fixed-path, single-beam optical architecture with a high-stability tungsten-halogen and deuterium lamp system, optimized collimation optics, and a low-noise photodiode detector. This configuration ensures robust baseline stability and high photometric reproducibility—critical for routine QC workflows in regulated environments. Designed for laboratories requiring reliable performance without the complexity of dual-beam synchronization, the SP-V1100 delivers consistent spectral fidelity under variable ambient conditions, making it suitable for method transfer between research, clinical, and production settings.
Key Features
- Single-beam optical path with optimized light throughput and minimized thermal drift, supporting long-term measurement stability
- Fixed-wavelength bandwidth of 2.0 nm—aligned with ISO 9001-compliant calibration protocols for routine spectrophotometric validation
- Wavelength accuracy of ±0.5 nm and repeatability ≤0.3 nm—verified using NIST-traceable holmium oxide and didymium reference filters
- Stray light level ≤0.05% T at 360 nm—meets ASTM E275 and USP requirements for UV-range assay sensitivity
- Integrated high-resolution LCD interface with responsive touch navigation and real-time spectrum preview
- Dedicated USB 2.0 port compliant with USB Mass Storage Class (MSC) protocol—enables direct export of absorbance/time-scan datasets to FAT32-formatted drives without proprietary software
- Modular sample compartment accommodating standard 10-mm cuvettes, film holders, and thermostatically controlled cell holders (optional)
Sample Compatibility & Compliance
The SP-V1100 accommodates liquid, suspension, and thin-film samples via interchangeable accessories including quartz and UV-grade fused silica cuvettes (10 mm pathlength), adjustable film clamps, and Peltier-cooled cell holders (operating range: 5–40 °C, ±0.2 °C stability). All optical components comply with RoHS Directive 2011/65/EU and IEC 61010-1:2010 safety standards. The instrument’s wavelength calibration traceability aligns with ISO/IEC 17025:2017 requirements for testing laboratories, and its photometric linearity (0–3.0 A) is verified per ISO 6059:2021. For GLP/GMP environments, audit-ready operation logs—including date/time stamps, user ID, and parameter settings—can be exported in CSV format for archival or FDA 21 CFR Part 11-compliant systems (when integrated with validated LIMS platforms).
Software & Data Management
While the SP-V1100 operates autonomously via its embedded firmware, optional PC-based software (DLAB SpectraView v3.x) provides extended functionality: kinetic time-scan profiling, multi-wavelength quantitation, spectral subtraction, and calibration curve generation with linear, quadratic, or cubic regression models. Data files are saved in open-format .CSV and .TXT structures—ensuring interoperability with MATLAB, Python (Pandas), and laboratory information management systems (LIMS). No driver installation is required for USB data transfer; the instrument appears as a removable storage device upon connection. Firmware updates are delivered via signed binary packages, with version control and checksum verification embedded in the update protocol.
Applications
- Clinical biochemistry: Quantification of total protein (Bradford/Lowry), enzymatic activity (NADH/NADPH kinetics), hemoglobin derivatives, and serum bilirubin
- Environmental monitoring: Nitrate/nitrite, phosphate, and heavy metal ion (e.g., Cr(VI), Fe(II)) determination in wastewater per EPA Method 353.2 and ISO 15681-1
- Pharmaceutical QA/QC: Assay of active pharmaceutical ingredients (APIs) per USP monographs, dissolution profile analysis, and excipient compatibility screening
- Academic research: DNA/RNA purity assessment (A260/A280 ratio), nanoparticle size estimation via surface plasmon resonance shifts, and dye degradation kinetics
- Industrial process control: Real-time monitoring of pigment concentration in coatings, dye bath strength in textile manufacturing, and catalyst loading in polymer synthesis
FAQ
Is the SP-V1100 compatible with GLP-compliant data integrity requirements?
Yes—when used with validated procedures, its timestamped operation logs and exportable CSV reports support ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) for audit readiness.
Can the instrument perform kinetic measurements?
Yes—the built-in timer function supports up to 999-point time-scan acquisition at user-defined intervals (0.1–60 s), with absorbance values stored sequentially for post-acquisition slope analysis.
What is the recommended recalibration interval?
DLAB recommends wavelength verification every 6 months using certified reference filters and photometric verification annually with neutral density filters traceable to NIST SRM 930e.
Does the SP-V1100 support external printer output?
No native parallel or serial printer interface is provided; however, exported CSV files can be formatted and printed via standard office applications.
Are quartz cuvettes included with the base configuration?
Standard delivery includes one pair of 10-mm pathlength UV-grade quartz cuvettes; additional accessories (e.g., micro-volume cells, temperature-controlled holders) are available as optional modules.
