Filter Paper Grade Comparison between Hawach and Whatman

Learn about Hawach
Hawach scientific is a manufacturer specializied in laboratory consumables including filter paper, membrane filter, extraction thimbles, syringe filter, vials, pipette, vacuum pump and so on, which has 15 years of experience and good reputation in the filter industry.
We stricly control the quality in production, so our quality is equivalent to Whatman. From now on our products have been exported to more than 150 countries and regions. Here’s a comparison between Hawach and other famous brands, hope this introduction will give you a better understanding of Hawach’s products.
Grade comparison
1. Qualitative Filter paper- standard grades
Made from high-quality linters, with average 0.1% ash content, supply in slow, medium and fast flow rate

HawachBIO-1BIO-2BIO-4BIO-5BIO-6
WhatmanGrade 1Grade 2Grade 4Grade 5Grade 6
Advantec22321235131
MunktellNo.1/1FNo.2/1501288/3293/120H1290/1001
Ahlstrom601642631610950
Macherey

Nagel

616616md1670619eh619eh

Technical Data

GradePartical

retention

AppearanceFiltration

speed

Ash content %Basic weight

g / m2

Wet burst

(mm H₂O)

BIO-111umsmoothMedium< 0.184> 140
BIO-28 umsmoothMedium< 0.184> 140
BIO-420umsmoothfast< 0.184> 120
BIO-52.5umsmoothslow< 0.184> 180
BIO-63.0umsmoothslow< 0.184> 180

2. Wet strengthened grades
High wet strength and widely used to assay sucrose in cane sugar

HawachBIO-91BIO-113
WhatmanGrade 91Grade 113
Advantecn/an/a
Munktell55/N6 S/N
Ahlstrom615n/a
Macherey Nageln/an/a

Technical Data

GradeSeparating propertyFiltration

seconds

Filtration

speed

Ash content %Pore

size

Basic weight

g / m2

Wet burst

(mm H₂O)

BIO-91PbSO435-70sMedium<0.1310um84>=320
BIO-113Fe(OH)3<35sfast<0.1330um68>=320

3. Quantitative Filter paper-Ashless Grades (Ash <0.01%)
Suited for quantitative routine analysis and acid-washed

HawachBIO-40BIO-41BIO-42BIO-43BIO-44
WhatmanGrade 40Grade 41Grade 42Grade 43Grade 44
AdvantecNo.5B75c  –6/4 A
Munktell39000M/389393/00H392/00A391
Ahlstrom74    –9475  95
Macherey

Nagel

640d640m640de640md640de

Technical Data

GradePartical

retention

AppearanceFiltration

speed

Ash content %Basic weight

g / m2

Wet burst

(mm H₂O)

BIO-408.0umsmoothMedium<0.007104>180
BIO-4120-25umsmoothfast<0.007104>180
BIO-422.5umsmoothslow<0.007104>200
BIO-4316umsmoothMedium-fast<0.007104>180
BIO-443umsmoothslow<0.007104>200

4.Quantitative Filter papers-Hardened Low Ash Grades

HawachBIO-50BIO-52BIO-54
WhatmanGrade50Grade52Grade54

Technical Data

GradePartical

retention

AppearanceFiltration

speed

Ash content %Basic weight

g / m2

Wet burst

(mm H₂O)

BIO-502.7umsmoothSlow<0.011100>200
BIO-527umsmoothmedium<0.011100>180
BIO-5420-25umsmoothfast<0.011100>180

5.Quantitative Filter papers-Hardened Ashless Grades

HawachBIO-540BIO-541BIO-542
WhatmanGrade540Grade541Grade542

Technical Data

GradePartical

retention

AppearanceFiltration

speed

Ash content %Basic weight

g / m2

Wet burst

(mm H₂O)

BIO-5408 umsmoothmedium<0.011100>180
BIO-54120-25umsmoothFast<0.011100>180
BIO-5422.7umsmoothslow<0.011100>200