QUV - The World's Most Widely Used Weathering Tester
UV light is responsible for almost all photodegradation of durable materials exposed outdoors. The QUV tester’s fluorescent lamps simulate the critical short-wave UV and realistically reproduce the physical property damage caused by sunlight. Types of damage include color change, gloss loss, chalking, cracking, crazing, hazing, blistering, embrittlement, strength loss and oxidation.

Dew, not rain, is responsible for most of the wetness that occurs in outdoor exposure. The QUV UV test chamber's condensation system realistically simulates dew and accelerates its effect using elevated temperature.

The condensation process automatically purifies the ordinary tap water used in the system. This is because the process of evaporating and condensing the water onto the specimens is actually a distillation process, which removes all impurities.

The QUV tester conveniently accommodates up to 48 specimens (75mm x 150mm) and complies with a wide range of international, national, and industry specifications, ensuring the reliability and reproducibility of your test program. Visit our standards page for more information.

  • Printer
Category: ProductsQ-LAB

Easy to Operate
The QUV UV tester’s simple, proven design makes it easy to install, easy to use, and almost maintenance-free. It operates completely automatically, 24 hours a day, 7 days a week.  Features include:

  • Simple user interface for easy programming in five user-selectable languages: English, French, Spanish, Italian or German
  • Exposure conditions displayed continuously
  • Self-diagnostic warnings and service reminders
  • Quick calibration with patented AUTOCAL system

The QUV tester is economical to purchase and to operate, because it uses:
  • low cost, long life fluorescent UV lamps
  • ordinary tap water for condensation

Models  (see also Features Tab)

  • QUV/basic: UV and condensation (no irradiance control)
  • QUV/se: UV, condensation and SOLAR EYE irradiance control
  • QUV/spray: UV, condensation, SOLAR EYE irradiance control and water spray
  • QUV/cw: cool white visible light, condensation and SOLAR EYE irradiance control
QUV Lamps
Fluorescent UV lamps are inherently more stable than other types of lamps, including xenon arc lamps.  The spectral power distribution (SPD) does not change with lamp aging, even up to 8,000 hours.  This gives more reproducible test results, fewer lamp changes, and lower operational costs.
Q-Lab produces more UV lamps than the rest of the weathering industry combined.  Q-Lab's lamps are specially engineered to our own proprietary specifications, based on our 50 years of experience with fluorescent UV technology.  We have the most stringent quality control testing in the industry.  The result is that the QUV tester provides the most consistent, stable spectrum, year after year.
Several different types of UV lamps are available for different applications, which are listed below.  
UVA-340 Lamps
The QUV tester’s UVA-340 lamps give the best simulation of sunlight in the critical short wavelength region from 365 nm down to the solar cut-off of 295 nm.  
UVA-340+ Lamps
UVA-340+ lamps offer the same spectrum as UVA-340 lamps but provide longer lifetime at high irradiance, up to 1500 hours at 1.55 W/m2/nm and 750 hours at the maximum irradiance (1.70 W/m2/nm). 
UVA-351 Lamps
The QUV UV tester’s UVA-351 lamps simulate the UV portion of sunlight filtered through window glass.  It is most useful for interior applications, for testing of some inks and for polymer damage that can occur in an environment near a window.  
UVB-313EL Lamps
The QUV tester’s UVB-313EL lamps maximize acceleration utilizing short-wave UV that is more severe than the UV normally found at the earth’s surface. Consequently, these lamps may produce unrealistically severe results for some materials. UVB-313EL lamps are most useful for QC and R&D applications, or for testing very durable materials.  
UVB-313EL+ Lamps 
UVB-313EL+ lamps offer nearly the same spectrum as UVB-313EL lamps but provide longer lifetime at high irradiance, up to 1500 hours at 1.55 W/m2/nm and 750 hours at the maximum irradiance (1.70 W/m2/nm)
QFS-40 Lamps
Also known as FS-40 or F40 UVB, this is the original QUV lamp.  FS-40 lamps are still specified in a few legacy automotive test methods.  QFS-40 lamps should only be used in the QUV/basic tester. 
Cool White Lamps
The QUV UV test chamber’s cool white lamps (used only in model QUV/cw) effectively reproduce and accelerate indoor lighting conditions encountered in office and commercial environments as well as retail display lighting. 
Models QUV/basic QUV/se QUV/spray QUV/cw
Black Panel Temp (°C)
Light Cycle Temp.1
Condensation Cycle Temp.
Specimen Exposure Area 20 x 50 cm
(2x front side)
20 x 108 cm
(1x rear side)
4160 cm2 total
20 x 50 cm(2x each side)
4000 cm2 total
Specimen Capacity3 50 Specimens
(75 x 150 mm)
48 Specimens
(75 x 150 mm)
Inlet Water Pressure 0.2-5.5 bar (2-80 psi)
Inlet Water Purity5 Tap Water > 200 kΩ∙cm
< 5 μS/cm
< 2.5 ppm TDS
6-8 pH
Water Consumption6
5 liters/day
5 liters/day
7 liters/minute
External Dimensions
(w x h x d)
137 x 135 x 53 cm (54 x 53 x 21 in)
Weight 136 kg (300 lbs)
Electrical Requirements 120V ± 10%, 1-,
60 Hz, 14A
230V ± 10%, 1-,
50/60 Hz, 7A
120V ± 10%, 1-,
60 Hz, 16A
230V ± 10%, 1-,
50/60 Hz, 8A
120V ± 10%, 1-,
60 Hz, 16A
230V ± 10%, 1-,
50/60 Hz, 8A
120V ± 10%, 1-,
60 Hz, 16A
230V ± 10%, 1-,
50/60 Hz, 8A