کاغذ صافی واتمن نمره ۴۱
Whatman No.41

بسته 100 عددی ،

قطر 55 الی 150 میلیمتر ،

موجود در دو ورژن جدید و قدیم ،

محصول شرکت واتمن ،

ضمانت اصالت محصول .

توضیحات محصول

WHATMAN

Filter Paper : Ashless

Grade : ۴۱

Cat No. : 1441


Grade 41 Quantitative Filter Paper Ashless (Ash 0.007%), circle

The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides).

Ashless: 0.007% ash maximum for Grades 40 to 44 and a maximum of 0.01% for the 589 Grades. These are very pure filters suitable for a wide range of critical analytical filtration procedures.

Whatman quantitative filters from GE Healthcare are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet specific needs.

Grade 41: 20 um

This fastest ashless filter paper is also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates. This filter is also available in a disposable filter funnel. This is a convenient, disposable 47 mm filter funnel with a 250 ml capacity. The 47 mm Grade 41 filter can be easily removed for further analysis or culturing.


Product properties

 
Complete Pack
100 Pieces
Grade
Grade 41
Format
Circles
Type
Ashless
Typical Thickness
220 µm
Basis Weight
85 g/m2
Filtration Speed (Herzberg)
54 s
Air Flow Rate
3.4 s/100 mL/in2
Ash Content
0.007%
Material
High-quality cotton linters
Alpha Cellulose Content Min.
0.98%
Tensile M/D Dry
27.2 N/15 mm

1)This data shown may be based on historic Whatman records. We are in the process of updating our supporting information as the manufacturing site for these products is changing or have changed already. We will update with new data as soon as it is available (expected to be completed by Jan. 2016). As is normal practice, customers should determine and validate for themselves (as necessary) that the products are suitable for their specific application. 2)Ash is determined by ignition of the cellulose filter at 900°C in air.