DGS - Dryden Glass Sand Filter Media (Grade 2, 0.8-2.5mm, 25kg)

Dryden Glass Sand (DGS) is a filtration media made from 100% recycled glass. In contrast to AFM®, DGS is made from mixed glass and it is not subjected to any activation process. Nevertheless, DGS allows ultra-fine purely mechanical filtration while suffering a lot less from bacterial clogging than sand. Like AFM®, DGS is produced in strict compliance to ISO specifications and undergoes a unique washing process using 100% rainwater to become the best, safest and purest non-activated glass media on the market.

DGS removes up to 30% more particles than sand
DGS reduces the formation of trichloramines in the filter for a healthier atmosphere in swimming pools
DGS needs shorter & slower backwashes than sand (240 seconds to evacuate 99% of retained particles at 45m/hr)
DGS has less efficiency loss over a complete filtration cycle & 2 x greater longevity than sand

Product specifications:

Particle size: 0.8 - 2.5mm
Bulk bed dentity: 1,25kg/l
Loose organics: 95g/ton
Ferrous metal: 13g/ton
Hardness: >7 mohs
Sphericity: > 0.79
Effective size: 0.40
Coefficient of uniformity: <1.85
Aspect ratio: 2 - 2.4
Weight: 25kg