A UV LED curing system RFQ that specifies only “UV LED spot lamp, 365 nm” invites quotes that range from handheld hobby equipment to precision industrial systems — none of which are directly comparable. Engineering-grade RFQ specifications eliminate this ambiguity. They define the performance requirements your process needs and give suppliers enough information to quote equipment that actually fits the application. This guide walks through the key specification parameters for a UV LED curing equipment RFQ.

Why Detailed Specifications Matter

Procurement teams issue RFQs to get competitive quotes. Without detailed performance specifications, suppliers respond with whatever product fits the description at the price point they want to sell. The resulting quotes are not comparable — they cover different power levels, different irradiance values, different controller features — and the evaluation becomes a feature comparison rather than a performance evaluation.

Detailed specifications shift the comparison from “what does the supplier want to sell” to “which system meets our requirements at the right cost.” This produces better purchasing decisions and fewer post-purchase surprises.

Specify the Application Context

Begin the RFQ with a brief description of the application:

• Adhesive or coating type and supplier: e.g., “UV-curable acrylic adhesive, 365 nm cure wavelength, minimum 1,000 mJ/cm² dose for full cure”
• Substrate materials: what the adhesive bonds to, and whether either substrate is UV-transparent or UV-opaque
• Bond joint geometry: spot cure, area flood, or linear scan; bond area dimensions
• Production environment: manual assembly station, semi-automated, or fully automated integration; cleanroom or standard industrial environment
• Throughput requirement: parts per hour or cure cycles per shift

This context allows suppliers to recommend appropriate equipment and flag potential application concerns before the quote. An RFQ without application context produces generic quotes; an RFQ with application context produces informed recommendations.

Specify Wavelength

State the required emission peak wavelength and the acceptable tolerance:

“Peak emission wavelength: 365 nm ±5 nm, confirmed by measured emission spectrum at rated power. Supplier to provide emission spectrum data as part of quotation.”

If multiple wavelengths are acceptable (e.g., 365 nm or 385 nm), state this explicitly and request that the supplier confirm adhesive compatibility at the quoted wavelength.

Specify Irradiance at Working Distance

This is the most common specification error in UV LED RFQs. Specify irradiance at your actual working distance, not at the lamp face:

“Minimum irradiance: 1,500 mW/cm² measured at 15 mm working distance from the light guide tip, using a calibrated radiometer at 365 nm. Supplier to provide irradiance-versus-distance curve data and specify measurement method.”

If you do not yet know your working distance, request irradiance data at multiple distances (10 mm, 20 mm, 30 mm, 50 mm) so you can determine whether the lamp meets requirements at achievable working distances for your fixture design.

Specify Spot Size and Uniformity

For spot lamp systems:

“Minimum effective spot diameter: 10 mm at 15 mm working distance, defined as the area within which irradiance exceeds 1,000 mW/cm². Supplier to provide beam profile data showing irradiance distribution across the spot.”

For flood lamp systems:

“Active cure area: minimum 100 mm × 100 mm at 50 mm working distance. Irradiance uniformity: ±15% across the full cure area at rated power. Supplier to provide uniformity map data at the specified working distance.”

If you need help defining spot size or irradiance specifications for your application before writing the RFQ, Email Us and an Incure applications engineer will help you establish the required parameters.

Specify Controller Requirements

Define the controller features required for your process:

Exposure time control:
“Programmable exposure time: 0.1-second resolution, range 0.1–999 seconds. External trigger input (24V digital I/O or dry contact) for PLC-controlled cure initiation.”

Irradiance control:
“Adjustable output power: 10–100% of rated irradiance in programmable steps. Closed-loop irradiance feedback control to maintain output within ±5% of setpoint over cure cycle duration.”

Dose monitoring and alarms:
“Integrated irradiance monitoring with alarm output when measured irradiance falls below user-defined minimum threshold. Alarm to be communicated via digital output and visual/audible indicator.”

Data logging:
“Controller to log exposure date/time, power setting, exposure duration, and measured dose per cycle to on-board non-volatile memory. Log to be accessible via USB or Ethernet connection for download.”

Recipe storage:
“Minimum 10 user-definable process recipes with password protection and recipe change audit log.”

Specify Safety Requirements

“Equipment must carry [CE marking with Declaration of Conformity] [UL or ETL listing from NRTL recognized by OSHA] for the region of installation. CE marking to cover Low Voltage Directive and EMC Directive. Supplier to provide Declaration of Conformity and certification documentation with quotation.”

“Equipment to comply with RoHS Directive 2011/65/EU, as amended. Supplier to provide RoHS Compliance Declaration.”

“Supplier to provide IEC 62471 photobiological safety risk group classification for the lamp at rated emission.”

Specify Light Guide Requirements (for Spot Lamp Systems)

“Light guide: [liquid light guide / fiber optic bundle], [specify diameter] mm exit diameter. Supplier to state expected light guide replacement interval under specified duty cycle and replacement unit cost.”

“Light guide shall be field-replaceable by production personnel without special tools or factory return. Supplier to confirm and provide replacement procedure.”

Specify Delivery Documentation

For regulated manufacturing environments:

“Supplier to provide the following documentation with equipment delivery:
– Installation qualification (IQ) protocol or IQ report documenting equipment identity, specifications, and installation requirements
– Operational qualification (OQ) protocol or OQ report documenting irradiance verification method and acceptance criteria
– Calibration certificate for any integrated irradiance monitoring sensor, traceable to [NIST / national standards body]
– Operator and maintenance manual in English”

Include Acceptance Test Requirements

Define how the equipment will be evaluated at delivery:

“Supplier to perform acceptance testing at delivery confirming:
– Peak emission wavelength within specified tolerance (radiometric measurement)
– Irradiance at specified working distance meets minimum specification (calibrated radiometer measurement, reported value with uncertainty)
– Irradiance uniformity across cure area within specified tolerance (radiometer mapping at multiple positions)
– Controller functions — exposure timer, power adjustment, dose monitoring, alarm output — demonstrated to specification
– All certifications documented and provided”

Requesting Application Testing as Part of the Evaluation

For significant capital purchases, include a request for application testing in the RFQ:

“Preferred suppliers will be invited to provide cure demonstration using supplier’s quoted equipment on representative production substrates with [adhesive formulation]. Demonstration to include irradiance measurement at production working distance and cure qualification of bonded test specimens. Cure qualification to include [lap shear testing / hardness measurement / visual inspection] at Incure’s facility or supplier’s applications laboratory.”

Application testing as part of the RFQ process allows direct comparison of competing systems on your actual materials and validates supplier claims before purchase.

Contact Our Team to discuss UV LED curing equipment specifications for your RFQ or to request application testing support.

Visit www.incurelab.com for more information.