Intrinsic reflectance factor at an effective wavelength of 457 nm; measure for the brightness of paper
Intrinsic reflectance factor at an effective wavelength of 457 nm; measure for the brightness of paper
Open Monday - Friday: 9:30am-5:30pm
*Closed Saturday & Sunday*
Open Monday - Friday: 7:30AM - 3:30PM
*Closed Saturday & Sunday*