CHN SPEC CS-821N Benchtop Spectrophotometer (d/8, ΔE*ab 0.015, 360nm-780nm)

CHN SPEC CS-821N Benchtop Spectrophotometer (d/8, ΔE*ab 0.015, 360nm-780nm)

The CHNSpec CS-821N Benchtop Spectrophotometer is a premium specialized color analysis device, specifically designed for research and development (R&D) laboratories and quality control (QC) centers with the most stringent standards. With a state-of-the-art optical structure and extremely low error control, the CS-821N is a comprehensive “measurement station”, perfectly meeting the needs of complex material analysis.

Outstanding Features

Ultimate Accuracy and Repeatability: With a highly impressive repeatability (ΔE*ab ≤ 0.015), the CS-821N delivers almost absolute consistency across measurements. This device serves as a “benchmark” for creating and cross-referencing color data with global factories or partners.

Multi-State Measurement (Reflectance & Transmittance): Featuring a highly spacious sample measurement chamber, the device allows technicians to flexibly measure not only solid, opaque material surfaces (reflectance) but also perfectly transparent, semi-transparent samples, or liquids (transmittance) with extreme accuracy.

Simultaneous SCI and SCE Analysis: The smart optical system enables the device to simultaneously calculate both SCI (true color of the material, ideal for color matching) and SCE (visual perceived color affected by surface roughness) values in a single click, saving maximum time.

Advanced UV Optical Control: The Xenon light source integrates UV control and calibration capabilities (UV included/UV excluded), which is particularly important for accurately evaluating materials containing optical brightening agents (OBA) or luminescent materials.

Dual Optical Path Design: Continuous light source monitoring technology eliminates energy fluctuations over time and automatically compensates for environmental factors, thereby maintaining extremely stable operating performance.

Technical Specifications:

Illumination / Observation System:

Reflectance: d/8 (diffuse illumination, 8° viewing angle), Transmittance: d/0 (diffuse illumination, 0° viewing angle);

Simultaneous measurement of SCI (Specular Component Included) / SCE (Specular Component Excluded);

Compliance Standards: CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO 7724/1, DIN 5033 Teil 7, JIS Z8722 Condition C, ASTM E1164, ASTM D1003-07

Sensor: Dual-row high-precision CMOS array sensor

Grating Method: Concave grating

Integrating Sphere Diameter: 152mm

Wavelength Range: 360nm-780nm

Wavelength Interval: 10nm

Spectral Half-width: 1.6nm

Reflectance Range, Resolution: 0-200%, 0.01%

Light Source: Xenon lamp & LED

UV Measurement: UV included, 400nm cut, 420nm cut, 460nm cut

Measurement Time: Single mode < 2 seconds

Measurement/Illumination Aperture:

Reflectance:

XLAV: Φ25.4mm / Φ30mm

LAV: Φ15mm / Φ18mm

MAV: Φ8mm / Φ11mm

SAV: Φ3mm / Φ6mm

Users can customize apertures, the device automatically recognizes when switching apertures.

Transmittance: Φ17mm / Φ25mm

Sample Size: Unlimited sample width and height, thickness ≤50mm

Long-term Repeatability: XLAV Chromaticity Value: Standard deviation within ΔE*ab 0.015 (arbitrary temperature change 20℃ ± 10℃, white tile measured every hour within 24 hours)

Repeatability: XLAV Spectral Reflectance / Transmittance: Standard deviation within 0.1%; XLAV Chromaticity Value: Standard deviation within ΔE*ab 0.015 (When a white tile is measured 30 times at 10-second intervals after white calibration)

Inter-instrument Agreement: XLAV ΔE*ab 0.2 (BCRA Series II, Average measurement of 12 tiles, at 23℃)

Observer Angles: 2°, 10°

Illuminants: A, C, D50, D55, D65, D75, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, CWF, U30, DLF, NBF, TL83, TL84

Languages: English, Russian, Spanish, Portuguese, Japanese, Thai, Korean, German, French, Polish, Chinese (Simplified and Traditional)

Display: Spectral graph/values for reflectance and transmittance, color values, color difference values, Pass/Fail, color simulation, color assessment, opacity, liquid chromaticity values, color trend

Color Spaces: CIE LAB, CIE LUV, LCh, Hunter Lab, Yxy, XYZ, Munsell, s-RGB, βxy

Other Indices:

WI (ASTM E313-00, ASTM E313-73, CIE/ISO, AATCC, Hunter, Taube Berger, Stensby)

YI (ASTM D1925, ASTM E313-00, ASTM E313-73), Tint (ASTM E313-00), Metamerism index milm, Stain fastness, Color fastness, ISO brightness, R457, A density, T density, E density, M Density, APHA/Pt-Co/Hazen, Gardner, Saybolt, ASTM color, Opacity, Total Transmittance, Tint/Lightness, Color Strength

Color Difference Formulas: ΔE*ab, ΔE*CH, ΔE*uv, ΔE*cmc, ΔE*94, ΔE*00, ΔE*ab(hunter), 555 shade sort

Storage: 8GB

Screen: 7-inch touch screen

Operating System: Android

Adapter: 12V/3A

Working Temperature: 5-40℃ (40-104F), relative humidity 80% (35℃) non-condensing

Storage Temperature: -20-45℃ (-4-113F), relative humidity 80% (35℃) non-condensing

Interface: RS-232, USB, USB-B

Other Functions: 1. Camera for measurement area monitoring; 2. Supports horizontal, vertical, and downward measurement methods (requires optional accessories for downward measurement); 3. Automatic temperature and humidity compensation function.

Standard Accessories: Adapter, USB cable, transmittance fixture, U disk (PC software), Black Calibration Cavity, White and Green Calibration Tile, Reflectance Test Support, 30mm, 18mm, 11mm and 6mm apertures, reflectance sample fixture, 40x10mm glass cell, reflectance fixture

Optional Accessories: Heating Fixture for Transmittance, Vertical Support and Pneumatic ram for downward measurement, Reflectance fixture for small size sample, Reflectance Glass Cell Support, Corrosion-Resistant Protective Plate (non-removable), Sample Holder for Fiber, Film Fixture, Transmittance Fixture for Small Aperture, Trolley Case, European Standard Plug, American Standard Plug

Common Applications

Thanks to its wide wavelength range and ability to measure various physical states, the CHNSpec CS-821N is an indispensable analytical center in industries such as:

• Paints, Inks, and Coatings: Establishing high-precision color formulations, inspecting the color consistency of electrostatic powder coatings, and metal plating coatings.
• Plastics and Packaging: Measuring the color of plastic pellets, controlling the transparency/haze (Haze/Transmittance) of nylon films, acrylic plastics, and PET films.
• Paper and Textiles: Analyzing the whiteness and yellowness of paper, evaluating the quality of fabric dyes (especially samples containing fluorescent whitening agents).
• Chemicals, Pharmaceuticals, and Food: Spectral analysis of various solutions, powder chemicals, essential oils, syrups, colored beverages, and liquid foods.