The instrument is used in conjunction with the Wallace
Ageing Chamber (O14) to determine the Plasticity
Retention Index (PRI) of raw natural rubbers. 

Features
Accurate and repeatable measurements
Available as 2 models - P14 or P14/VT
(Variable Temperature)
Supplied with additional top platens of 7.3mm
and 14mm diameter for use with samples
outside the normal plasticity range
The platens are easily interchangeable