Quantitative Filter Paper, 185 mm dia, Cotton Linters, Cellulose, Grade 541

Cytiva's Whatman™ Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration. Along with fast Grade 541 filter paper, the hardened, ashless range from Cytiva’s Life Sciences business includes general-purpose Grade 540 and Grade 542 for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.

Diameter	:	185 mm
Grade	:	Grade 541
Material	:	High-quality Cotton Linters
Ash Content	:	0.005%
Sterility	:	Non-sterile
Grade Type	:	Hardened Ashless
Type	:	Quantitative
Dry Burst Pressure	:	117 kPa/17 psi
Filtration Speed	:	34 sec/100 ml (Herzberg)
Format	:	Circle
Nominal Air Flow Rate	:	3 sec/100 ml/in2
Nominal Basis Weight	:	78 g/m2
Particle Retention in Liquid	:	22 µm
Properties	:	Fast
Thickness	:	155 µm
Typical Water Flow Rate	:	359 ml/min
Wet Burst Pressure	:	48.3 kPa/7 psi
Alpha Cellulose Content	:	=98%
Loading Capacity	:	N

High wet-strengthHigh chemical resistance to strong acid and alkali suspensionsRetention of gelatinous precipitate22 µm Nominal particle retention ratingFast flow rate (Herzberg filtration speed 34 sec)Maximum of 0.006% ash concentrationUse as an animal foodstuff filter for determining fiber contentDetermination of gelatin content in milk and creamQuantification of chloride in cement, as well as chloride and phosphorous in coal and cokeTypical applications include fiber in animal foodstuffs, gelatin in milk and cream, chloride in cement and chloride and phosphorous in coal and coke