Merck

WHA1001240

Whatman® qualitative filter paper, Grade 1

circles, diam. 240 mm, pack of 100

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别名:
Z240125
NACRES:
NB.24

物料

cellulose filters
circles

包装

pack of 100

manufacturer/tradename

Whatman 1001-240
Whatman Article No. 28413920 (US reference)

参数

0.25 psi wet burst
150 sec/100 mL speed (Herzberg)

直径

240 mm

厚度

180 μm

灰分

≤0.06%

孔径

11 μm (Particle retention)

基本重量

87 g/m2

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此商品
WHA1001270WHA1001320WHA1001325
manufacturer/tradename

Whatman 1001-240, Whatman Article No. 28413920 (US reference)

manufacturer/tradename

Whatman 1001-270, Whatman Article No. 28413921 (US reference)

manufacturer/tradename

Cytiva, Whatman 1001-320, Whatman Article No. 28413922 (US reference)

manufacturer/tradename

Whatman 1001-325, Whatman Article No. 28413923 (US reference)

material

cellulose filters, circles

material

cellulose filters, circles

material

cellulose filters, circles

material

cellulose filters, circles

pore size

11 μm (Particle retention)

pore size

11 μm (Particle retention)

pore size

11 μm (Particle retention)

pore size

11 μm (Particle retention)

packaging

pack of 100

packaging

pack of 100

packaging

pack of 100

packaging

pack of 100

diam.

240 mm

diam.

270 mm

diam.

320 mm

diam.

25 mm

一般描述

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 1: 11 μm (medium flow filter paper)
The most widely used filter paper for routine applications with medium retention and flow rate. Extended range of sizes includes 10 to 500 mm diameter circles and 460 x 570 mm sheets.

This grade covers a wide range of laboratory applications and is frequently used for clarifying liquids. Traditionally the grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate.

In agriculture, it is used for soil analysis and seed testing procedures. In the food industry, Grade 1 is used for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid and is widely used in education for teaching simple qualitative analytical separations.

In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.

其他说明

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

法律信息

Whatman is a registered trademark of Cytiva

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