Quality testing

We are testing quality of timber impregnation according to BS 5666-3:1991 standard (atomabsorption spectometry method) and give classification according to EN-351-2 standard (penetration class P1 – P8).

Results of tests will yield data about retention of treatment chemical in sapwood in terms of kg/m3, impregnation depth and penetration class.


Please note that heartwood content in small trees can be very different (as provided on the photo below) and this will also affect the impregnation quality (penetration of chemical).