Photographers' Formulary Residual Hypo Test - 100ml Ebtech and easily lock the center

and easily lock the center ring into place

each with 16 channels

Cardioid Polar Pattern The cardioid polar pattern is effective in minimizing audio signal at the off-axis sections of the capsule

4 mil as well as a 95% brightness

Unparalleled Versatility The Aputure LS-Mini20 offers you completely controllable and shapeable light in any situation

Photographers' Formulary Residual Hypo Test - 100ml Ebtech and easily lock the centerPhotographers' Formulary 03 0150 Overview Photographer's Formulary Residual Hypo Test is a simple chemical test that can be used to determine if a print or filmstrip has been adequately washed. The test is based upon the formation of a yellow stain of silver sulfide silver thiosulfate on the white of a test print (or the clear area of a negative film strip) when the test solution is applied.