Stouffer scale

The Stouffer T2115 is a precision 21-step transparent film wedge designed to calibrate and monitor the exposure and processing variables of photosensitive coatings, emulsions, photopolymer plates, and photoresists.

Known throughout the industry as a benchmark for accuracy, it provides clear, visual feedback to eliminate guesswork during UV exposure cycles.

Key Technical Specifications: 

• Format: Transparent Transmission Step Wedge (film positive)
• Dimensions: 1/2 in. x 5 in. (12.7 mm x 127 mm)
• Density Range: 21 steps ranging from near-clear to an optical density maximum (D_max) of approximately 3.05
• Step Increment: Each step increases by an optical density of 0.15, which represents a 50% reduction in light transmission per step (equivalent to 1/2 F-stop of exposure).