KODAK EKTACOLOR RA Control Strips, Process RA-4 and RA-4NP Sensitometrically exposed paper for monitoring the processing of KODAK PROFESSIONAL PORTRA, SUPRA, and ULTRA Papers using KODAK EKTACOLOR RA Chemicals, Processes RA-4 and RA-4NP. A processed reference strip of the same emulsion as the control strips is included with each package for comparison. Each carton contains 10 moisture-proof envelopes for five 3 1/2 x 12-inch strips each.
KODAK Control Strips are sensitometrically exposed film or paper strips that are used to monitor the processing of films or paper. A processed reference strip on the same emulsion is included with each package of control strips. Control strips must be stored at 0°F (-18°C) prior to processing.