GBPI P60 – Color Matching Light Booth (Standard Multi-Source Light Cabinet)
- Precision multi-illuminant color matching light booth for visual color assessment and metamerism detection
- Full testing compliance with ASTM D1729, ISO 3668, DIN 6173, CIE, and GB/T 9761
- Equipped with standardized light sources: D65 (Daylight), TL84 (Store), CWF (Cool White), F (Tungsten), and UV (Fluorescence)
- Instant electronic switching between illumination sources without warm-up delays or optical flickering
- Integrated automated elapsed time meter tracking operational tube lifespan for timely relamping
- Standard neutral matte gray interior finish (Munsell N7) eliminating chromatic reflections and visual interference
- Indispensable quality control cabinet for printing, packaging, textile, plastics, inks, and automotive coatings
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The GBPI P60 is an advanced multi-source color matching light booth engineered to provide standardized, repeatable illumination environments for the visual color assessment, shade verification, and metamerism evaluation of flexible packaging films, printed substrates, plastics, textile fabrics, inks, and surface coatings. Manufactured in compliance with internationally accepted color evaluation criteria—including ASTM D1729 (standard practice for visual evaluation of color differences of materials), ISO 3668, DIN 6173, and CIE publication guidelines—this optical cabinet eliminates subjectivity caused by erratic ambient lighting.
Visual color perception varies substantially when identical packaging samples or masterbatches are inspected under differing ambient light spectra, such as midday sunlight, retail store fluorescent tubes, or home incandescent bulbs. Samples that appear perfectly matched under supermarket illumination may exhibit striking color mismatches when viewed outdoors, a phenomenon known as metamerism. Operating as a standard color matching light booth, the GBPI P60 allows quality control technicians and colorists to rapidly switch between multiple standardized spectra to guarantee color consistency across supply chains.
Multi-Illuminant Configuration & Metamerism Detection
The P60 chamber accommodates up to five distinct, tightly regulated illumination sources, including international artificial daylight (D65, 6500K), European commercial retail lighting (TL84, 4000K), American fluorescent store lighting (CWF, 4150K), home tungsten filament lighting (F, 2700K), and ultraviolet radiation (UV, 365nm). The dedicated ultraviolet channel excites optical brightening agents (OBAs) and fluorescent whitening dyes present in packaging paperboards, plastic films, and synthetic textiles, revealing additive disparities invisible under ordinary white light.
Reliable Construction & Tube Life Tracking
Constructed with an interior cavity finished in standardized neutral matte gray paint, the cabinet eliminates stray color casts and optical glares. Each illuminant channel features an automated microcomputer timer that records cumulative operating hours, ensuring light tubes are replaced before spectral degradation impacts color verification accuracy.
Adopted by gravure printers, flexible packaging converters, masterbatch compounding plants, and cosmetic laboratories, the P60 ensures dependable visual color harmony from initial sample approval to mass production runs.
GBPI P60 Color Matching Light Booth – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Standardized Visual Color Comparison & Metamerism Optical Evaluation |
| Applicable Standards | ASTM D1729, ISO 3668, DIN 6173, CIE Standards, GB/T 9761, CY3-1991 |
| Standard Light Sources |
• D65: International Artificial Daylight (Color Temp: 6500K, Power: 18W) • TL84: Commercial European / Asian Store Lighting (Color Temp: 4000K, Power: 18W) • CWF: Cool White Fluorescent American Store Lighting (Color Temp: 4150K, Power: 18W) • F: Domestic Incandescent Tungsten Filament Source (Color Temp: 2700K, Power: 40W) • UV: Ultraviolet Black Light Source (Wavelength: 365nm, Power: 20W) |
| Interior Cavity Dimensions | 680 mm (W) × 380 mm (D) × 390 mm (H) |
| Exterior Cabinet Dimensions | 710 mm (W) × 405 mm (D) × 570 mm (H) |
| Internal Surface Finish | Standard Non-Reflective Neutral Matte Gray Coating (Munsell N7 Equivalent) |
| Source Switching Control | Microprocessor Electronic Touch-Keypad with Instant Illumination (No Preheating) |
| Tube Lifespan Management | Automated Elapsed Time Counter per Individual Light Channel (Digital Display) |
| Instrument Net Weight | Approximately 19.5 kg |
| Power Supply | AC 220V ± 10%, 50 Hz / 60 Hz Single Phase |
Key Performance Features of the GBPI P60
- Multi-Source Illumination Versatility: Furnished with 5 standard illuminants covering international daylight (D65), point-of-sale retail lamps (TL84, CWF), residential tungsten (F), and black light ultraviolet (UV).
- Rapid Metamerism Identification: Enables instant back-to-back switching between disparate color temperatures without delay, instantly unmasking metameric pigment mismatches across varying lighting conditions.
- UV Optical Brightener Screening: Independent ultraviolet 365nm irradiation channel detects fluorescent whitening agents and optical brighteners in plastics, paperboard, and textile dyes.
- Digital Elapsed Time Tracking: Integrated microcomputer logs total cumulative burning hours for every light source, alerting operators when tubes approach life limits to ensure photometric accuracy.
- Standardized Neutral Gray Chamber: Interior surfaces are treated with a specialized non-glare neutral gray finish matching international colorimetric criteria to eliminate chromatically biased reflections.
- Flicker-Free Electronic Ballasts: High-frequency solid-state electronic ballasts eliminate strobe flicker and minimize eye fatigue during comprehensive inspection routines.
Standard Package & Light Tubes Included
| Item | Description | Quantity | Type |
|---|---|---|---|
| 1 | GBPI P60 Color Matching Light Booth Cabinet Body | 1 Set | Standard |
| 2 | D65 Standard Artificial Daylight Fluorescent Tubes (6500K) | 2 Pcs | Standard |
| 3 | TL84 Commercial Fluorescent Light Tubes (4000K) | 2 Pcs | Standard |
| 4 | CWF Cool White Fluorescent Tubes (4150K) | 2 Pcs | Standard |
| 5 | F Filament Incandescent Bulbs (2700K) | 4 Pcs | Standard |
| 6 | UV Ultraviolet Black Light Tube (365nm) | 1 Pc | Standard |
| 7 | Integrated Microprocessor Elapsed Time Tracking Module | 1 Set | Standard |
| 8 | Standard Power Cable & Operation Manual | 1 Set | Standard |
| 9 | Optional 45-Degree Standard Viewing Sample Stand | 1 Pc | Optional |
Primary Testing Applications
Flexible Packaging & Gravure Printing
Evaluation of multi-color flexographic and rotogravure print jobs, brand color fidelity, and ink tone harmony across plastic pouches, shrink sleeves, and cartons.
Plastics & Masterbatch Compounding
Visual verification of color consistency between pigment concentrates, injection molded caps, blow-molded bottles, and extruded polymer sheets.
Paints, Inks & Industrial Coatings
Screening batch-to-batch color drift, opacity, and overprint varnish effects on metal cans, coil coatings, and automotive exterior finishes.
Textiles, Dyeing & Apparel
Assessment of shade continuity, metamerism, and fluorescent dye excitation on synthetic fabrics, woven textiles, and leather goods.