X-Rite Ci7800 Benchtop Spectrophotometer
| Brand | X-Rite |
|---|---|
| Origin | USA |
| Model | Ci7800 |
| Type | Automatic |
| Wavelength Range | 360–780 nm |
| ΔE* (SCI) Repeatability (RMS) | 0.01 |
| Average ΔE* (SCI) | 0.08 |
| Photometric Resolution | 0.001% |
| UV Calibration Options | 420 UV, 460 UV Cutoff |
| Illumination/Viewing Geometry | d/8° (SPIN & SPEX simultaneous) |
| Transmission Apertures | 27, 17, 10, 6 mm |
| Reflectance Apertures | 25, 17, 10, 6, 3.5 mm |
Overview
The X-Rite Ci7800 Benchtop Spectrophotometer is a high-precision, dual-mode (reflectance and transmittance) spectrophotometer engineered for metrology-grade color measurement in R&D laboratories, quality control environments, and regulatory-compliant manufacturing facilities. It operates on the principle of diffuse illumination with an 8° viewing geometry (d/8°), supporting both SCI (Specular Component Included) and SCE (Specular Component Excluded) measurements—simultaneously acquired via its patented SPIN/SPEX optical path architecture. This design eliminates mechanical switching delays and ensures perfect spectral alignment between modes, critical for evaluating textured, glossy, or multi-layered substrates such as coated papers, woven textiles, injection-molded plastics, and pigment dispersions. The instrument conforms to ASTM E308 for color computation, CIE 15:2018 for spectral data handling, and USP for instrumental color assessment in pharmaceutical excipient and packaging qualification.
Key Features
- Dual-mode optical engine enabling concurrent SPIN (SCI) and SPEX (SCE) spectral acquisition—no manual geometry reconfiguration required.
- Integrated environmental monitoring: real-time temperature and relative humidity sensors log ambient conditions with every measurement, supporting ISO 291 and ASTM D618 compliance for condition-controlled reporting.
- Laser-guided transmission targeting ensures precise sample positioning across four calibrated apertures (27 mm, 17 mm, 10 mm, and 6 mm), minimizing operator-induced variability in film, sheet, or liquid cell measurements.
- Five reflectance apertures (25 mm, 17 mm, 10 mm, 6 mm, and 3.5 mm) accommodate diverse sample geometries—from large printed panels to small-diameter fibers or tablet coatings—without accessory swapping.
- UV calibration flexibility with selectable 420 nm and 460 nm UV cutoff filters, enabling accurate quantification of fluorescent whitening agents (FWAs) and optical brighteners per ISO 105-J03 and AATCC Test Method 183.
- Photometric resolution of 0.001% enables detection of subtle metamerism shifts and low-level batch-to-batch spectral deviations in masterbatch formulations and inkjet inks.
Sample Compatibility & Compliance
The Ci7800 supports rigid, flexible, translucent, and opaque specimens across industrial verticals including packaging, automotive interiors, cosmetics, and pharmaceutical primary packaging. Its robust aperture system accommodates standard ISO 2813 gloss substrates, ASTM D2244-compliant plastic plaques, and USP -specified blister foil samples. All measurement protocols are traceable to NIST-traceable standards, and instrument validation workflows align with IQ/OQ/PQ documentation requirements. Data integrity meets FDA 21 CFR Part 11 criteria when deployed with X-Rite’s Color iQC software configured for electronic signatures and audit trails.
Software & Data Management
Operated via X-Rite’s Color iQC platform (Windows-based), the Ci7800 delivers structured data export in CSV, XML, and CxF/X format for integration into LIMS, SAP QM, or MES systems. Measurement history includes full spectral scans (360–780 nm at 10 nm intervals), environmental metadata, operator ID, and timestamp—all retained with immutable audit logs. Custom pass/fail tolerancing supports ΔE*00, ΔE*ab, and CMC(2:1) metrics, while statistical process control (SPC) charts monitor long-term instrument stability per ISO/IEC 17025 clause 7.7.
Applications
- Color formulation validation for solvent-based and waterborne coatings under controlled D65 and F2 illuminants.
- Batch release testing of medical device housings where chromatic consistency affects biocompatibility labeling compliance.
- Fluorescence correction in paperboard packaging to ensure brand-color fidelity under retail LED lighting conditions.
- Transmittance uniformity mapping of anti-reflective films used in display cover glass manufacturing.
- Stability assessment of organic pigments exposed to accelerated UV aging per ISO 4892-3.
FAQ
Does the Ci7800 support inter-instrument agreement (IIA) verification?
Yes—the reported average ΔE* (SCI) of 0.08 is validated against a fleet of reference instruments per ASTM E2539 and is maintained through factory recalibration using NIST-traceable ceramic tiles.
Can the Ci7800 measure metallic or pearlescent coatings?
It supports multi-angle measurement only when paired with the optional MA98 Multi-Angle Accessory; standalone Ci7800 operation is limited to fixed 8° geometry and does not resolve goniochromatic effects.
Is spectral data export compliant with laboratory information management systems (LIMS)?
Yes—CSV and XML exports include full spectral arrays, metadata headers, and configurable field mappings compatible with Thermo Fisher SampleManager, LabVantage, and Waters Empower.
How often does the instrument require calibration verification?
X-Rite recommends daily white tile verification and quarterly full calibration using certified standards; automated drift compensation adjusts for thermal hysteresis between measurements.
Does the humidity sensor meet GLP documentation requirements?
Yes—relative humidity and temperature values are embedded in each measurement record and exported alongside spectral data, satisfying Annex 11 and ALCOA+ data integrity principles.
