Research Matters
Filtry jakościowe fałdowane Grade 1V
Powszechnie stosowany papier fałdowany do wielu ogólnych zastosowań filtracyjnych.
Whatman™ Grade 1V lab filter paper is a widely used pre-folded filter for many general filtration applications.

• Nominal particle retention rating of 11 µm supports general filtration
• Intermediate filtration speed (Herzberg 150 s)
• Pre-folded filter for ease-of-use and time savings with conical filter funnels; avoids the need to quadrant-fold circles

We offer a full line of qualitative papers in standard filter grades and wet-strengthened grades.

Whatman™ pre-folded general filter paper
As the pleated and pre-folded version of Whatman™ filter paper 1, Grade 1V is well suited for qualitative analysis in routine applications including:

• Separations of lead sulfate, hot calcium oxalate, and calcium carbonate
• Agriculture, for soil analysis
• Food quality testing to separate solid foodstuffs from associated liquid
• Education, to teach simple qualitative analysis
Filtry jakościowe fałdowane Grade 1V
Grade Grade 1V 
Grade Type Folded (Prepleated) 
Typical Particle Retention in Liquid 11 µm  
Nominal Thickness 180 µm
Typical water flow rate 57 ml/min 
Nominal Basis Weight 87 g/m2
Nominal Ash Content 0.06% 
Material Cellulose 
Typical Trace Element Levels Aluminium 3.6 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g 
Properties Medium flow 
Application Used filter paper for routine applications with medium retention and flow rate. Covers a wide range of laboratory applications and is frequently used for clarifying liquids. 
Supporting Analysis Qualitative 
Product Product Name Diameter
1201-125 Grade 1V Filter Paper for General Filtration; 12.5 cm circle (100 pcs) 125 mm
1201-150 Grade 1V Filter Paper for General Filtration; 15 cm circle (100 pcs) 150 mm
1201-185 Grade 1V Filter Paper for General Filtration; 18.5 cm circle (100 pcs) 185 mm
1201-240 Grade 1V Filter Paper for General Filtration; 24 cm circle (100 pcs) 240 mm
1201-270 Grade 1V Filter Paper for General Filtration; 27 cm circle (100 pcs) 270 mm
1201-320 Grade 1V Filter Paper for General Filtration; 32 cm circle (100 pcs) 320 mm