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.
Jason S. –
Very good quality, and pocket friendly, ND filter, and tougher than camera butter
Christopher L. –
The jello just melts away… love it.
Julio G. –
Funciona como se esperaban
M. C. S. –
Trs bonne qualit
kirk p. –
Love all the ND filters
Enrique L. –
excellent image quality at an affordable price. ND 4 for cloudy days or at dusk, ND 8 for sunny days.
Christopher B. –
Great quality and cheaper than the camera butters
Dave G. –
Cheap yet durable ND filter.
Juan Z. –
NICE image Quality, great price, and also it helps to protect your camera
James M. –
For moderately sunny days. If filming in desert or bright location better go with 32