Skip to Content
Merck
All Photos(1)

Key Documents

WHA1440185

Whatman® quantitative filter paper, ashless, Grade 40

circles, diam. 185 mm, pack of 100

Synonym(s):

Whatman filter, Whatman paper, Z241326, filter papers, paper filter

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
41104900
NACRES:
NB.24

material

circles
cotton filters (high-quality cotton linters)

packaging

pack of 100

manufacturer/tradename

Whatman 1440-185
Whatman Article No. 28417996 (US reference)

parameter

0.29 psi wet burst
340 sec/100 mL speed (Herzberg)

diam.

185 mm

thickness

210 μm

ash

≤0.007%

pore size

8 μm (Particle retention)

basis weight

95 g/m2

Looking for similar products? Visit Product Comparison Guide

Related Categories

Features and Benefits

  • High-purity filters contain 0.007% maximum ash content
  • Medium nominal particle retention rating of 8 µm
  • Medium filtration speed (Herzberg 340 s)
  • Particularly useful for gravimetric analysis

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Sorry, we don't have COAs for this product available online at this time.

If you need assistance, please contact Customer Support.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service