CES 531 Benchtop Spectrophotometer

Caltech Índia é o fabricante e fornecedor de CES 531 Benchtop Spectrophotometer (Large Aperture). It is designed for complex samples and large-area surface color measurement. It is also known as Color Measurement Spectrophotometer.

O CES 531/1 Benchtop Spectrophotometer (Large Aperture) is a high-precision spectrophotometer specially designed for measuring granular, powdered, and textured samples. It adopts 45° annular illumination, is equipped with a Ø50 mm large measurement aperture, and strictly complies with CIE, ISO, ASTM, and multiple national standards, meeting the requirements of ASTM D6290-19 for particle color testing. The instrument provides a wide measurement area and highly representative data, making it ideal for color measurement of granular samples. It can be widely used for precise color measurement and quality control in industries such as plastics & electronics, paints & inks, textile & apparel dyeing, printing, ceramics, and food.

O CES 531/2 Benchtop Spectrophotometer (Large Aperture) is a high-precision color measurement device specifically designed for complex samples and large-area surface color inspection. It adopts the D/8 (diffuse illumination, 8° viewing) optical geometry, conforming to CIE, ISO, ASTM and multiple national standards. Equipped with a Ø50 mm measurement aperture and a Ø120 mm integrating sphere, it achieves large-area uniform sampling, significantly improving the representativeness and stability of color measurement for non-uniform samples (e.g., textured surfaces, granules, fabrics, food, etc.).

• High repeatability: ΔE*ab repeatability ≤0.03, spectral reflectance deviation ≤0.07%.
• Stable inter-instrument agreement: ΔE*ab ≤0.35, ensuring consistent data across multiple devices.
• 40+ standard light sources: Built-in a full range of observation light sources, supporting 2°/10° dual observer angles.

The Benchtop Spectrophotometer CES 531/1 & CES 531/2 incorporates a nano-integrated spectral device and a silicon photodiode array. It is widely used in industries such as plastics & electronics, paints & inks, textiles & apparel, printing, ceramics, and food. It is an ideal choice for precise laboratory analysis and industrial production quality control.

1. Large Aperture Design – Tailored for Complex Samples

Ø50 mm Measurement Aperture: Paired with a Ø120 mm integrating sphere, it provides large-area uniform illumination and reception, effectively reducing measurement errors caused by uneven sample texture, particles, or color distribution. It is especially suitable for color testing of heterogeneous samples such as rough surfaces, fabrics, food, powders, and granules.

CES 531/1: 45° annular uniform illumination and 0° reception, fully matching human visual characteristics, avoiding the influence of sample surface texture and gloss on measurement results. Measured data is highly consistent with visual evaluation, especially suitable for color testing of granular and textured samples.

CES 531/2: D/8 Optical Geometry with Simultaneous SCI/SCE Measurement: Uses diffuse illumination and 8° viewing, compliant with international standards. It can simultaneously acquire SCI (Specular Component Included) and SCE (Specular Component Excluded) data, meeting the analysis requirements of gloss effects in different applications and providing comprehensive data support for material appearance quality.

2. High-Precision Spectral Analysis – Reliable and Stable Data

Alta Repetibilidade:
After warm-up and calibration, 30 consecutive measurements of a standard white plate at 5-second intervals give color value repeatability ΔE*ab ≤0.03; spectral reflectance standard deviation ≤0.07% (≤0.2% for 400-700 nm band), ensuring accuracy and stability in identifying tiny color differences.

Good Inter-Instrument Agreement:
The average of measurements on 12 BCRA Series I standard color tiles gives inter-instrument agreement ΔE*ab 0.35, ensuring consistent color data transfer and alignment across multiple devices and laboratories, supporting group-wide quality control.

Full-Band Accurate Acquisition:
Measurement wavelength range covers 400-700 nm, wavelength interval 10 nm, half-bandwidth 10 nm, reflectance range 0-200%, achieving high-fidelity capture of sample spectral information

3. Advanced Optical System – Comprehensive and Powerful Functions

Nano-Integrated Spectral Device:
Uses advanced nano-integrated spectral technology combined with a dual-row 20-set silicon photodiode array, achieving high-speed, high-sensitivity spectral acquisition. Measurement time is approx. 1 second, greatly improving testing efficiency.

Multiple Light Sources and Observation Conditions:
Built-in over 40 standard observation light sources (D65, A, C, F-series, LED-series, etc.), supporting 2°/10° observer angles, simulating color appearance under various lighting conditions, meeting different industry standards.

Rich Colorimetric Indices:
In addition to conventional color spaces (CIE LAB, XYZ, LCh, HunterLab, etc.) and color difference formulas (ΔEab, ΔE00, ΔE*cmc, etc.), it also supports professional indices such as whiteness (Wl, multiple standards), yellowness (Yl), staining fastness, color change fastness, strength, hiding power, color density CMYK, etc., fully covering quality control needs of plastics, textiles, coatings, printing, and other industries.

4. Smart Operation and Data Management – Suitable for Industrial Applications

7-inch Large Touchscreen
Equipped with a TFT true-color capacitive touchscreen, intuitively displaying spectral graph/data, color values, color difference charts, pass/fail results, and color deviation – smooth operation, clear results.

Grande capacidade de armazenamento
Stores up to 1,000 master samples and 30,000 test samples, meeting the data storage and traceability needs of large-scale industrial production.

Full-Platform Software Support
Benchtop Spectrophotometer comes with professional quality management B software (download from official website), supporting F in-depth data analysis, batch management, remote transmission, and report export, facilitating the establishment of a digital color management system.

Multi-Language System
Built-in languages include English, Russian, and others, adapting to global application scenarios.

5. Industrial Durability and Environmental Adaptability

Long-Life Illumination Light Source
Uses a combined LED light source with a service life of up to 10 years or >2 million measurements, greatly reducing equipment maintenance costs.

Ampla Adaptabilidade Ambiental
Operating temperature range 0-40°C, humidity 0-85% RH (non-condensing), altitude below 2000 m, suitable for most production and testing scenarios. Storage temperature range -20 to 50°C, ensuring safe storage when not in use.

Fonte de alimentação estável
Powered by a 24 V DC, 3 A power adapter, ensuring stable operation during long-term continuous use.

Microprinter (Optional)
Easy to carry, without computer can be continuously printed out the measurement of various parameters, easy to save.

Informações para pedidos:

CES 531 – Benchtop Spectrophotometer (Large Aperture)
Modelo Produto	CES 531/1	CES 531/2
Geometria	45/0 (45° annular uniform illumination, 0° reception)	D/8 (diffuse illumination, 8° viewing)
Padrões de Conformidade	CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO 7724-1, ASTM E1164, DIN 5033 Teil 7
Diferenciais	The Particle Spectrophotometer adopts 45/0 optical geometry and is equipped with a Ø50 mm large aperture, meeting the requirements of ASTM D6290-19 for particle color testing. The instrument provides a wide measurement area and highly representative data, making it ideal for color measurement of granular samples. It is used for precise color measurement and quality control in industries such as plastics & electronics, paints & inks, textile & apparel dyeing, printing, ceramics, and food.	The large aperture spectrophotometer adopts D/8 optical geometry and is equipped with a Ø50 mm large aperture. The instrument provides a wide measurement area and highly representative data, making it ideal for color measurement of complex samples. It is used for precise color measurement and quality control in industries such as plastics & electronics, paints & inks, textile & apparel dyeing, printing, ceramics, and food, as well as for accurate color analysis and data transfer in laboratories.
Tamanho da esfera de integração	/	120 mm
Fonte de Luz	Combined LED light source
Espectroscopia	Nano-integrated spectral device
Sensor	Silicon photodiode array (dual-row 20 sets)
Faixa de comprimento de onda	400 ~ 700 nm
Intervalo de comprimento de onda	10 nm	10 nm
Meia largura de banda	10 nm	10 nm
Faixa de Refletância	0-200%	0-200%
Abertura de medição	Ø50 mm	Ø50 mm
Componente Especular	/	Simultaneous SCI/SCE measurement
Espaço colorido	CIE LAB, XYZ, Yxy, LCh, CIE LUV, s-RGB, HunterLab, βxy, DIN Lab99, Munsell (C/2)
Fórmulas de diferença de cor	ΔEab, ΔEuv, ΔE94, ΔEcmc(2:1), ΔEcmc(1:1), ΔE00, DINΔE99, ΔE(Hunter)
Outro índice de cromaticidade	Spectral Reflectance, Wl (ASTM E313, CIE/ISO, R457, AATCC, Hunter, Taube, Berger, Stensby), Yl (ASTM D1925, ASTM 313), Tint (CIE/ISO, ASTM E313-20), Metamerism Index Ml, Staining Fastness, Color Change Fastness, Color Strength, Hiding Power, Color Density CMYK
Ângulo do Observador	2 ° / ° 10	2 ° / ° 10
iluminante	D65,A,C,D50,D55,D75, F1,F2,F3,F4,F5,F6, F7,F8,F9, F10,F11,F12,CWF,DLF,TL83,TL84,TPL5,U30,B,U35,NBF,ID50,ID65, LED-B1, LED-B2,LED-B3,LED-B4,LED-B5,LED-BH1 ,LED-RGB1,LED-V1,LED-V2,LED-C2,LED-C3,LED-C5
Ecrã	Spectral graph/data, colorimetric values, color difference values/graph, pass/fail results, color deviation
Repetibilidade	Spectral reflectance: standard deviation <0.07% (<0.2% for 400—700 nm) Colorimetric values: ΔE*ab <0.03 (after warm-up and calibration, 30 measurements of white plate at 5 s intervals)
Acordo Inter-instrumento	ΔE*ab ≤ 0.35 (average of measurements on 12 BCRA Series II color tiles)
Tempo de medição	Aproximadamente. 1 s
Modos de Medição	Single measurement, average measurement (2–99 times)
Dimensões	210 × 245 × 188 mm
Peso	3.1 kg	3.1 kg
Fonte de alimentação do laboratório	24 V DC, 3 A power adapter
Vida útil da fonte de luz	10 years or >2 million measurements
Ecrã	Tela sensível ao toque capacitiva TFT de 7 polegadas
Interfaces	USB, Bluetooth
Armazenamento de dados	1,000 standard samples, 30,000 test samples
Idiomas	Inglês	Inglês
Faixa de temperatura operacional	0–40°C, 0–85% UR (sem condensação)
Amplitude Térmica de armazenamento	−20 to 50°C, 0–85% RH (non-condensing)
Acessórios padrão	Power adapter, data cable, user manual, software, white plate, Petri dishes ×2
Acessórios opcionais	Micro impressora

Na Índia, temos vários clientes de Mumbai, Delhi, Bangalore, Chennai, Hyderabad, Ahmedabad, Kolkata, Surat, Pune, Jaipur, Lucknow, Kanpur, Nagpur, Visakhapatnam, Indore, Bhopal, Patna, Vadodara, Ghaziabad, Ludhiana, Coimbatore, Madurai, Nashik, Srinagar, Aurangabad, Dhanbad, Allahabad e Ranchi na Índia.