Lamp options and paint
Description
Lamp options and paint
Brand: Verivide, UK.
Often, colours need to be assessed using more than one light source in order to replicate different viewing environments. The need for different light sources becomes apparent when, for example, consumers complain that a product ‘looked different when we got it home’.
When two or more materials match visually under one illuminant but mismatch under another, the inconsistency is termed metamerism. It is most usually caused by differences in the colouring matter used for each material. If only one light source is used for colour assessment, metamerism can easily slip through the net with the potential to cause problems at the consumer interface.
The following table of VeriVide lamps for viewing cabinets covers all supply chain viewing conditions, including the specific requirements of individual major retailers.
Retailers have differing specifications for the lamps and grey used in the Colour Assessment Cabinets. VeriVide equipment provides these conditions for all applications. For consistency, the source of light must be controllable and constant. To understand light sources, two factors need to be considered:
1. COLOUR TEMPERATURE – expressed in Kelvin. (K)
Colour temperature describes the colour appearance of the lamp itself and the light it emits and can vary along with its spectral power distribution. “Correlated” colour temperature applies to fluorescent lamps and approximates the true colour temperature.
- Lamps with lower colour temperatures appear warmer i.e. red/orange and typical examples would be illuminant A and 830.
- Lamps with a higher colour temperature look bluer, and examples would include the VeriVide D65 and D75.
2. COLOUR RENDERING INDEX (CRI)
A numerical system that measures how well colours are rendered by a lamp in comparison to a reference light source. The CRI is measured on an index from 0-100, with 100 representing an exact match, whilst low values indicate poor colour rendering.
- Therefore a lamp rated with a CRI of 98 such as the VeriVide D65 will show colours more accurately than a lamp with a CRI rating of 62 such as the CWF.
This rating method is recognised by the Illuminating Engineering Society (IES) and the Commission International de L’Eclairage (CIE).
What types of textile testing equipment does Visiontex Co. offer?
Visiontex Co. provides a wide range of textile testing equipment, including instruments for testing fabric strength, colorfastness, pilling, abrasion resistance, and more. We aim to support laboratories with accurate and reliable tools for all aspects of textile quality assessment.
Do you provide calibration services for laboratory equipment?
Yes, we offer professional calibration services to ensure that your laboratory equipment performs accurately and complies with industry standards. Our team provides certified calibrations and maintains traceability to recognized standards.
Are Visiontex Co.’s calibration services accredited?
Yes, our calibration services are conducted by authorized and certified professionals. We follow rigorous standards and issue calibration certificates that meet industry requirements.
Can Visiontex Co. assist with setting up a new textile testing laboratory?
Absolutely! Our team provides end-to-end support, from helping you select the right equipment to guiding you through the installation and calibration processes. We offer comprehensive consultancy for both new and existing textile laboratories.
Does Visiontex Co. provide after-sales support and training?
Yes, we prioritize customer satisfaction by offering ongoing support and training for the equipment we supply. Our experts can guide your team on optimal equipment use and maintenance practices to ensure long-term reliability.
What is the lead time for ordering equipment from Visiontex Co.?
Lead times vary based on equipment availability and your specific requirements. Once we know the products you need, our team will provide an estimated delivery time and keep you updated throughout the process.
How do I request a quote for specific equipment or services?
You can request a quote by visiting our website and using the contact form, or by reaching out directly via email or phone. Please provide details of your requirements, and our team will respond promptly with a detailed quote.
Does Visiontex Co. offer maintenance services for textile testing equipment?
Yes, we offer maintenance services to keep your equipment in optimal condition. Regular maintenance helps prevent downtime and extends the lifespan of your testing tools.
How does Visiontex Co. ensure the quality of the products it supplies?
We partner with reputable manufacturers and conduct rigorous quality checks to ensure that all products meet industry standards for accuracy, durability, and reliability.
What payment options are available for purchases?
We offer flexible payment options to accommodate various customer needs. Please contact our team for details on the available payment methods and terms.
Lamp specifications:
| CIE Daylight Illuminants | |||||||
|---|---|---|---|---|---|---|---|
| Light Source | Name | Lamp Description | C.R.I. | Length | Watts | Diam | Product Code |
| D75 | VeriVide D75 "Artificial Daylight" | Correlated colour temperature 7500K. Conforming to the USA ASTM (American Society for Testing and Materials) D1729-82 standard for D75 Illuminant. With high CIE specifications, for accurate colour matching. | 96 | 600mm | 20w | T12 | 600D75 |
| D65 | VeriVide D65 "Artificial Daylight" | VeriVide D65 “Artificial Daylight”. Correlated colour temperature 6500K. Within the tolerances prescribed in BS 950: Part 1; and all international specifications for D65 illluminant. Specified for most applications where there is a need to maintain colour consistency and quality. Conforming highly to the CIE specifications, for accurate colour matching. | 98 | 600mm 1200mm 1500mm | 18w 36w 58w | T8 T8 T8 | 600D65 1200D65 1500D65 |
| D50 | D50 "Artificial Daylight" | Correlated colour temperature of 5000K. For the Graphic Technology and Photography industries. D50 lamps conform to BS 950: Part 2 and ISO 3664. Recommended for transmitted light source to view transparencies and for the reflected light source to view reproductions. | 98 | 600mm 1200mm 1500mm | 18w 36w 58w | T8 T8 T8 | 60095 120095 150095 |
| CIE Illuminant 'A' | |||||||
|---|---|---|---|---|---|---|---|
| Light Source | Name | Lamp Description | C.R.I. | Length | Watts | Diam | Product Code |
| 'F' | Tungsten Filament | Tungsten Filament Lighting. Approximate colour temperature of 2800K. Required by BS 950: Part 1 as a test for metamerism (approxiamating CIE Illuminant ‘A’). Typical light source used within domestic environments. | 100 | Globe Globe Round Clear-284mm Opal-284mm | 40w 60w 150w 60w 60w | 45mm 45mm - - - | 40G450 60G450 150FILO 28460CL 28460OP |
| 'A' | Tungsten Halogen | Tungsten Halogen Lighting (CIE Illuminant ‘A’). This represents incandescent A (inc-A) with a colour temperature of 2856K. Typical light source used within domestic environments. Used to check for metamerism. | 100 | - | 35w | - | HALO/12V /35WLP |
| Alternative (fluorescent) lighting / Point of Sale | |||||||
|---|---|---|---|---|---|---|---|
| Light Source | Name | Lamp Description | C.R.I. | Length | Watts | Diam | Product Code |
| 840 P15 | VeriVide 840P15 | Narrow Band Triphosphor Fluorescent Lamps. Correlated colour temperature of 4000K. CIE Illuminant F11. Often chosen as a European “Point of Sale” light source, with good colour rendering and manufactured to a tighter tolerance specification as prescribed by Marks & Spencer. (Formerly TL84P15) | 85 | 600mm 1200mm 1500mm | 18w 36w 58w | T8 T8 T8 | 60084P15 120084P15 150084P15 |
| CWF | Cool White | Cool White Broad Band Fluorescent Lamps. Correlated colour temperature of 4000K. Used as an American “Point of Sale” light source. Moderate colour rendering. | 62 | 600mm 1200mm 1500mm | 20w 40w 65/80w | T12 T12 T12 | 60033 120033 150033 |
| U35 | Ultralume 35 | Ultralume Narrow Band Triphosphor Fluorescent Lamp.Correlated colour temperature 3500K. An American “Point of Sale” light source, with good colour rendering. | 86 | 600mm 1200mm | 17w 32w | T8 T8 T8 | 600U35 1200U35 |
| 830 | 830 | Narrow Band Triphosphor Fluorescent Lamp. Correlated colour temperature 3000K. Often chosen as a European “Point of Sale” light source with good colour rendering.(Formerly TL83) | 85 | 600mm 1200mm 1500mm | 18w 36w 58w | T8 T8 T8 | 60083 120083 150083 |
| Horizon | |||||||
|---|---|---|---|---|---|---|---|
| Light Source | Name | Lamp Description | C.R.I. | Length | Watts | Diam | Product Code |
| 'H' | Horizon Lighting | Colour temperature 2300K. Used for Automotive, Apparel and Metamerism Testing. As specified by the ASTM (American Society for testing and Materials) D1729-74, Standard Practise for Visual Evaluation of Colour Differences of Opaque Materials. | 98 | - | 75w | - | HALO/12V /75W |
| Ultraviolet | |||||||
|---|---|---|---|---|---|---|---|
| Light Source | Name | Lamp Description | C.R.I. | Length | Watts | Diam | Product Code |
| UV | Ultraviolet | Ultraviolet Blacklight. Used to detect the presence of Optical Brightening Agents and/or Fluorescent dyes. Therefore it is useful when assessing white and Fluorescent shades to check the level present and its evenness. | N/A | Clear-450mm Blacklight-600mm | 15w 18w | T8 T8 | 450UV15 600UV18 |
Paint specification
| PAINT (For Cabinet Interiors) | |||
|---|---|---|---|
| Name | Description | Quantity | Product Code |
| Crown | Plain Grey 5574 Matt Emulsion | 0.5 Litre Tins | 5574 0.5L |
| Munsell | N5 | 0.5 Litre Tins | N5 0.5L |
| Munsell | N7 | 0.5 Litre Tins | N7 0.5L |
| VERIVIDE MAINTENANCE PACK | |||
| The VeriVide Maintenance Pack includes Cleaning Materials, Brush & Roller plus 0.5 litres of Paint. Please specify required paint colour when ordering | MAPA Colour requirements for manufacture and retail are complex and diverse. To ensure product colour is consistent several types of light source are used within a Colour Assessment Cabinet e.g. Artificial Daylight (D65 or D50), UV, 840, Cool White, Filament and many more. VeriVide recommend that lamps are replaced every 2000 hours or annually to ensure that their colour matching properties are maintained as these properties reduce with time and use even though the lamps continue to illuminate. Cabinets should also be cleaned and repainted annually to ensure that the reflected light and spectral output is not distorted. Replacement lamps and paint may be purchased from VeriVide or one of our global agents or UK customers can book a service of their equipment directly through VeriVide. | ||
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