UV Test Card UPF50+ Sun Strength Indicator – 10-Pack
UV Test Card UPF50+ Sun Strength Indicator – 10-Pack
Know Your UV Exposure Instantly – Portable UV Test Cards
Stay one step ahead of the sun with these handy UPF50+ UV Test Cards. Designed for outdoor enthusiasts, travelers, parents, and anyone who wants a quick visual read on ultraviolet intensity, these compact art-paper cards change color in response to UV light — the deeper the color, the stronger the UV. No batteries, no apps, no hassle.
Why You'll Love These UV Test Cards
- Instant Visual Feedback: Color deepens as UV intensity increases — a simple, at-a-glance indicator for outdoor UV conditions.
- UPF50+ Compatible Testing: Ideal for checking the UV-blocking effectiveness of sunscreen coverage, clothing, and protective gear under real outdoor conditions.
- Reusable Design: Each card can be used repeatedly, making them a smart, sustainable addition to your sun-safety kit.
- Pocket-Sized Portability: At approximately 10.5 × 4.5 cm (4.1 × 2 in), they slip easily into a pocket, wallet, or bag — ready whenever you head outdoors.
- Quality Art Paper Construction: Made from durable, sturdy art paper that holds up to regular use without tearing or fading prematurely.
- No Battery Required: Completely passive technology — just take the card outside and let the sun do the rest.
Specifications
| Material | Quality Art Paper |
| Size | Approx. 10.5 × 4.5 cm / 4.1 × 2 in |
| UV Response Range | 230–280 nm |
| Intensity Range | 0–20 W/cm² |
| Battery | Not required |
| Package Options | 1 card or 10-card pack |
| Country of Origin | Made in China |
What's in the Box
- 10 × UV Test Cards (or 1 × UV Test Card — depending on selected option)
Perfect For
- Beach days, hiking, camping, and picnics
- Checking UV levels before outdoor workouts or sports
- Teaching kids about sun safety in a fun, visual way
- Verifying UV protection on clothing and accessories
For more information on UV radiation and sun safety, visit the EPA's UV Safety Resource Center.
Frequently Asked Questions
Q: How do UV test cards work?
A: UV test cards use a photosensitive coating on quality art paper that reacts to ultraviolet light. When exposed to sunlight, the card changes color — a deeper, more vivid color indicates stronger UV intensity. Simply hold the card in the sunlight for a few seconds to get an instant visual reading of UV conditions.
Q: Are these UV indicator cards reusable?
A: Yes! These UV test cards are designed to be reusable. After removing them from direct UV light, the color gradually fades back, allowing you to use each card multiple times for repeated outdoor UV checks.
Q: What UV wavelengths do these cards detect?
A: These cards respond to a UV wavelength range of 230–280 nm, covering a key portion of the UV spectrum relevant to outdoor sun exposure and skin protection assessment.
Q: How can I use these cards to test UPF clothing or sunscreen?
A: Place the UV test card in direct sunlight to see the baseline UV color. Then place the card under your fabric or apply your sunscreen to the card's surface and compare — a lighter color indicates effective UV blocking, while a deeper color suggests more UV is getting through.