Find the ideal exposure time fast with a 21 Step Sensitivity Guide. Simply tape one of these to your screen, expose, and give the emulsion a hard rinse. Depending on how many squares remain, the guide will give you the perfect exposure time.

Best Features:

* Re-usable
* Prevents troubles with locked-in emulsion
* Achieve better detail
* Fast and easy-to-use

Our Take:

This is an absolute must-have item for any shop working with liquid emulsion or capillary film. Honestly, if you have not used a 21 Step Sensitivity Guide on every different mesh count in your shop, you are making a big mistake. The biggest concern is under-exposure. If you have ever wondered why reclaiming screens is such a difficult process, you need to check the exposure time very closely.