Description
PGFM is one of the highest quality refined glass filter medias on the market. It is produced by Dryden Aqua in own factory in strict compliance with our ISO certified process. The glass is first washed and decontaminated and then carefully broken to the appropriate particle shape and size. Above all they make sure no dangerous glass splinters can get into the filter material and that the organic load is below 400g per ton. But PGFM is not AFM®. PGFM does not undergo our patented activation process and it is manufactured from mixed glass – the white glass is not sorted out.
Nevertheless, PGFM is a better filter media than sand because it biofouls less, but it is not bioresistant like AFM®. PGFM is the answer to compete in the generic glass sand market and a highly price sensitive customer segment less concerned about exceptional performance.
Glass sand by Dryden Aqua: Priced to compete with other glasss sand on the market, but with a higher quality.
M. C. C. –
Bon filtre nd8
M. G. J. –
Produits de qualit pas comme les filtres telesin made in china
Ali A. –
If you buy this make sure you buy the holder or else you wont be able to put this on your gopro
Jesse M. –
These are great to get that buttery footage everyone wants Buy lots
Jerell D. –
Thicker and more options for mounts. TBS ND Filters are the bees knees
M. G. J. –
Un produit de qualit pas comme ces filtres telesin
Nicolas C. –
Excelente filter is a must for any drone
Daniel S. –
works well fits in all my gp mounts
Giancarlo S. –
Great quality lens for the price
James M. –
Best for bright days