PRESENTATION  
We'll find in our catalogue : :
 
  Industrial filtration is a complex operation. The choice of a filter paper often poses a problem whose solution doesn't appear always clearly.

Indeed, particularly when it acts of the filtration of the liquids, it should be admitted that one is in front of a compromise between the micron rating and the speed of desired filtration.

The essential quality of a filter paper is a micron rating. The filter paper containing vegetable cellulose fibres on great specific surface is a filter media of choice because it has exceptional qualities of retention and an advantageous cost price.

In this respect, the quality of the filter papers which we market under our mark PRAT DUMAS enjoys a solid reputation, and is accredited ISO 9001 V2000.

Our catalogue doesn't claim to answer all the requirements of the problems of filtration of the liquids and gases: it wants simply to propose a choice of filter paper which can answer many cases.

Thanks to its size, PRAT DUMAS offers an individualised service to each of its customers and a fast service. Our engineering departments and our laboratory can study each particular problems. >>

After examination of the various elements, we can produce the exact size and quality of filter paper answering the envisaged use. Our company is considered to be a specialist in the production of filter paper. 		 
 
ANALYSE QUALITATIVE 
• REF 609 - VERY FAST FILTRATION : 20 to 25 µ 
• REF 108 - FAST FILTRATION : 10 to 12 µ 
• REF 110 - AVERAGE FILTRATION : 6 to 10 µ 
• REF 116 - AVERAGE FILTRATION : 4 to 7 µ 
• REF 210 - SLOW FILTRATION : 2 to 3 µ 
 
ANALYSE QUALITATIVE, RENFORCE 
• REF 106 - AVERAGE FILTRATION : 7 to 10 µ 
• REF 107 - AVERAGE FILTRATION : 4 to 7 µ 
• REF 307 - CREPED - FAST FILTRATION 
• REF 613 - VERY FAST FILTRATION 20 µ 
• REF 607 - VERY FAST FILTRATION: 25µ 
 
PAPIER EN RAME 
• RAME VELIN 205 BLANC 
• RAME VELIN 205 GRIS 
• REF 407 - PAPIER JOSEPH 
 
PAPIER GERMINATION ET CONTROLE DES SEMENCES 
 
GLASS MICROFIBER 
• REF 875 - GLASS MICROFIBER (0,9 à 1,2 µ) 
• REF 88140 - GLASS MICROFIBER (1,1 µ) 
• REF 8837 - PAPIER GLASS MICROFIBER (1,2 µ) 
• REF 8855 - GLASS MICROFIBER (1,2 µ) 
• REF 868 - GLASS MICROFIBER (3,1 µ) 
 
ESSAIS ANTIBIOTIQUES 
 
ANALYSES CYTOLOGIQUES 
 
PAPIER POUR CHROMATOGRAPHIE ET BLOTTING (transfert) 
 
PAPER WITHOUT NITROGEN  
 
PAPIER SEPARATEUR DE PHASES 
 
REFERENCE E - THIMBLES FOR EXTRACTORS AND PROBES ( SOXHLET) 
 
TEST DE BLAINE 
 
CONTROLE QUALITE 
 
CAPACITE DE RETENTION 
 
ANALYSE QUANTITATIVE
PAPIER SANS CENDRE 
• REF 6601 - SLOW FILTRATION : 7 to 9 µ 
• REF 6600 - AVERAGE FILTRATION : 8 à 12 µ 
• REF 6602 - FAST FILTRATION : 10 to 15 µ 
• REF 6603 - VERY FAST FILTRATION : 12 to 16 µ 
 
ANALYSE QUANTITATIVE, RENFORCE
PAPIER A FAIBLE TENEUR EN CENDRE, DURCI 
• REF 603 – VERY FAST FILTRATION : 12 to 16 µ 
• REF 600 - AVERAGE FILTRATION : 8 to 12 µ 
• REF 601 - SLOW FILTRATION : 7 to 9 µ 
 
NEW !
MEMBRANE FILTERS 
 
CERTIFICAT ISO 9001: V2000