SPS
TESTER OR DENSOMETER (GURLEY TYPE)
(WITH PHOTO ELECTRONIC DIGITAL TYPE)
SPS
TESTER OR DENSOMETER (Gurley Type)
is a standard instrument for measuring the Smoothness, Porosity, Air
Permeability of paper and paper products and conforms to International Standard:
TAPPI - T460 m49 and ASTM-D726 - 58 method
A.