The mix they use is for all their studies is:
75% peat
13% vermiculite
12% rice hulls
0.7kg/m3 wetting agent
1kg/m3 wollastonite
1.3kg/m3 hydrated lime
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The mix they use is for all their studies is:
75% peat
13% vermiculite
12% rice hulls
0.7kg/m3 wetting agent
1kg/m3 wollastonite
1.3kg/m3 hydrated lime