Color Negative C-41 Control Strips

The control strips have been rock-solid for keeping our C-41 line in spec—the dye patches read consistently batch to batch, so I trust the density shifts when they show up. They monitor the key process parameters without fuss, which is exactly what we need for daily checks. One less variable to worr

My lab’s been running these through our C-41 line and the density patches are reading dead-on consistent, so I can finally trust my chemistry checks without second-guessing. They’re a bit pricey per box, but for monitoring every step except leuco dye, they do the job flawlessly.

Finally, a control strip that actually holds its density through the whole development run. I’ve been able to trust my C-41 monitoring again knowing every parameter is being checked except the leuco dye, and the consistent patch layout makes reading the results a breeze. My last batch of client nega