کاغذ صافی واتمن نمره ۲
Whatman No.2

بسته 100 عددی ،

قطر 55 الی 150 میلیمتر ،

موجود در دو ورژن جدید و قدیم ،

محصول شرکت واتمن ،

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توضیحات محصول

WHATMAN

Filter Paper : Qualitative

Grade : ۲

Cat No. : 1002


Grade 2 Qualitative Filter Paper Standard Grade, circle

A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing. These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 2: 8 um

Slightly more retentive than Grade 1 with a corresponding increase in filtration time (i.e., slightly slower filtration speed). More absorbent than Grade 1. In addition to general filtration in the 8 µm particle size range, the extra absorbency is utilized, for example, to hold soil nutrient in plant growth trials. Also used for monitoring specific contaminants in the atmosphere and in soil testing. Also available prepleated as Grade 2V.


Product properties

 
Complete Pack
100 Pieces
Grade
Grade 2
Format
Circles
Type
Standard
Typical Thickness
190 µm
Basis Weight
103 g/m2
Filtration Speed (Herzberg)
240 s
Air Flow Rate
21 s/100 mL/in2
Ash Content
0.06%
Material
Cellulose
Alpha Cellulose Content Min.
0.98%
Tensile M/D Dry
44.6 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)Particle retention rating at 98% efficiency.