Phone: +44 (0)1460 61791

UV Intensity Labels

UV Intensity Labels for UV Exposure Measurement

The CON-TROL-CURE® UV INTENSITY LABELS™ photochromic intensity indicators are a basic, reliable, low cost, simple, in-house method of monitoring UV intensity. When exposed to UV, the yellow labels undergo a gradual color change from yellow to blue that is directly related to the energy value received.

Made from the same exclusive material as the UV FastCheck Strips™, the The UV Intensity Labels™ (N010-005) have the same colour changing principle as the Strips, but they only have a single colour changing square. The UV Intensity Labels have a sensitivity range that is perfect for visual inspection of UV energy levels. We also offer a UV-C specific Intensity Label (N010-004) which offers an improved response to the UV-C spectrum and provides a better visual indication with lower power germicidal applications.

Please note that these labels are designed as a pass/fail test for verifying a known process and do not offer a method for quantative measurement of the UV dose. It is possible to create your own colour reference charts although each machine and each product dosed on it will require its own reference set as different product heights and the distance from your lamp will vary the exposure level. Additional references will need to be created if the product is dosed on different UV systems. An example chart on the link below shows the results possible with a germicidal lamp. This relates to a specific situation with 2 Ushio 9W UVC lamps. These have a known distance and it shows an example of the results that are possible.

Download custom UV Intensity Label Chart Using two Ushio 9W UVC lamps.

The adhesive backed label is placed on a sample product or substrate and processed to proper cure rate. The colour deviation can easily be measured with a spectrophotometer to record colour change or by comparing the colours to test labels created to known operating standards to determine lamp failure or processing inconsistency. NOTE: For best results, observe colour change immediately after exposure to UV light as label may change.

If used on a regular basis, they can detect equipment problems at an early enough stage to prevent lengthy shutdowns. Daily tests can easily indicate a step by step calibration for an accurate reference within each batch. The use of a Digital Tachometer can help insure repeatable results.

Suggested Use: the Con-Trol-Cure® Intensity Labels™ are especially useful in systems where other instruments are not practical, such as 3-D curing, web coating, container printing, medical sterilization, etc.


• The UV Intensity Labels™ measure the entire UV spectrum
• Accurate visual determination of UV dose made possible
• Monitor UV dose in difficult-to-access curing environments
• Detect UV lamp degradation and equipment failures
• Provide the user with periodic assurance that their UV source is performing to expectations
• Greater rate of colour change provides clearer, more precise UV dose determination
• Determine the dose profile in the 3D curing chambers or across wide webs to ensure even cure
• Measure the dose of sunlight in outdoor curing applications
• Evaluate and compare multiple UV light sources

SPECIFICATIONS: The UV Intensity Labels™

• The UV Intensity Labels™ are available in packages of 990 labels (9 sheets of 110 labels per sheet.)
• The UV Intensity Labels™ Dimensions: ¾"H x 1"W (19mm x 25mm).


• UV-C Intensity Labels are available in packages of 550 labels (10 sheets of 55 labels per sheet.)
• UV-C Intensity Labels Dimensions: 1/2"H x 3/4"W (12mm x 19mm).


• Shelf life is currently rated at 12 months minimum.
• Usage well beyond current rating is possible with proper storage.
• Store in the original packaging out of direct light and away from excessive heat or moisture.
• Store package flat, not vertical.
• Ideal storage location is within a cool and dry location like a drawer.

Additional Uses:
Great for school science projects and science fairs, as they are simple to use and are able to demonstrate the levels of Ultraviolet intensity.

Part Number - N010-005 UV INTENSTY LABELS (990 single labels)PRICE QUOTE - email us at
Part Number - N010-004 UVC INTENSTY LABELS (550 single labels)PRICE QUOTE - email us at

Standard N010-005 Fastcheck strips normally available from stock. The N010-004 UV-C labels are a special order item.
Not sure which labels to order ? See the main differences between the UV intensity Labels and the UV Fastcheck Strips in the pdf below: UV intensity Labels and UV Fastcheck Strips: Which one is right for me ?

Ordering Information: UV Intensity Labels

Part Number:

N010-005 Intensity Labels
N010-004 UVC Intensity Labels


(990 single labels)
(550 single labels)

Email Me A Price:

Email Quote
Email Quote