Cytiva® Pyramid Folded Filter Paper, Cellulose 110mm, GR 540, Folded, Pyramid, 1000 per pack

Whatman cellulose filter paper grades are also available in pyramid (square) folded formats.

• Easily fits into conical funnels.
• Saves valuable time when undertaking repetitive or multiple analyses.
• Provides the same high quality and consistency that you expect from all Whatman filter papers.

Specifications:

• Alpha Cellulose Content Min.: ≥98%  
• Grade: 540
• Material: High quality cotton linters
• Nominal Ash Content: 0.005%
• Nominal air flow rate: 13 s/100 mL/in2
• Nominal basis weight: 85 g/m²
• Nominal thickness: 160 µm
• Type: hardened ashless
• Typical Particle Retention in Liquid: 8 µm
• Typical Trace Element Levels: Aluminium 3.4 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 14.7 µg/g Chromium 1.1 µg/g Copper 8.2 µg/g Iron 16.3 µg/g Lead <0.5 µg/g Magnesium 3.3 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 3.7 µg/g Silicon <6 µg/g Sodium 17 µg/g Zinc 87.8 µg/g  Application: Frequently used in the gravimetric analysis of metals in acid/alkali solutions and in collecting hydroxides after precipitation by strong alkalis.  
• Typical water flow rate: 97 ml/min
• Format: Folded