GEOBEN is naturally occuring sodium bentonite confirming ISO 13500 and GCL related ASTM Standarts.

Bentonite layer (sodium bentonite granules): 2-8 mm accoding to client requirement

Bentonite layer (sodium bentonite granules): 200 mesh according to client requirement

	STANDART	GEOBEN
Swell Index	ASTM-D-5890 ml/2g ≥ 24	ml/2g ≥ 32
Fluid Loss	ASTM-D-5891 ml/2g ≤ 18	Ml/2g ≤14
Montmorillonite Content	60 %	78 % min
Methylne Blue	mg/g ≥ 300	mg/g ≥ 350