توضیحات محصول
WHATMAN
Filter Paper : Qualitative
Grade : ۱
Cat No. : 1001
کاغذ صافی واتمن نمره ۱
Whatman No.1
تماس بگیرید
بسته 100 عددی ،
قطر 55 الی 150 میلیمتر ،
موجود در دو ورژن جدید و قدیم ،
محصول شرکت واتمن ،
ضمانت اصالت محصول .
Grade 1 Qualitative Filter Paper Standard Grade, circle
A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. 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 um
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 filter is also available in the FilterCup, this is a convenient, disposable 70 mm filter funnel with a 250 ml capacity molded from polypropylene with an integral, heat bonded filter (catalog number 1600-001). 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.
Product properties
| Complete Pack |
100 Pieces
|
| Grade |
Grade 1
|
| Format |
Circles |
| Type |
Standard
|
| Typical Thickness |
180 µm
|
| Basis Weight |
88 g/m2
|
| Filtration Speed (Herzberg) |
150 s |
| Air Flow Rate |
10.5 s/100 ml/in2
|
| Ash Content |
0.06%
|
| Material |
Cellulose
|
| Alpha Cellulose Content Min. |
0.98%
|
| Tensile M/D Dry |
39.1 N/15 mm
|
| Trace Elements | Aluminum: Antimony: Arsenic: Barium: Boron: 1 µg/g Bromine: 1 µg/g Calcium: 185 µg/g Chlorine: 130 µg/g Chromium: 0.3 µg/g Copper: 1.2 µg/g Fluorine: 0.1 µg/g Iron: 5 µg/g Lead: 0.3 µg/g Magnesium: 7 µg/g Manganese: 0.06 µg/g Mercury: Nitrogen: 23 µg/g Potassium: 3 µg/g Silicon: 20 µg/g Sodium: 160 µg/g Sulfur: 15 µg/g Zinc: 2.4 µg/g |
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.
