WHATMAN Grade 541 Hardened Ashless Grades

CYTIVA
Hardened ashless filter papers are suited for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis.
• Typical properties

Typical particle retention in liquid (µm)¹ 22
Nominal ash content (%)³ 0.005
Nominal air flow (s/100 mL/in²) 3
Nominal thickness (µm) 155
Nominal basis weight (g/m²) 78
Typical water flow rate (mL/min)² 359

• Ordering information – quantitative filter papers – ashless grades

Dimensions (mm) Catalog number Quantity/Pack
42.5 1541-042 100 
47 1541-047  
55 1541-055 100 
70 1541-070  
90 1541-090  100 
110 1541-110 100
125 1541-125 100
150 1541-150 100
185 1541-185 100
240 1541-240 100
270 1541-270  
320 1541-320 100
400 1541-400  

• Ordering information – quantitative filter papers – ashless grades filter sheet

Dimensions (mm) Catalog number Quantity/Pack
460 x 570 1541-917 100