WHA1540042

Whatman^® 定量ろ紙、硬化無灰、グレード 540

circles, diam. 42.5 mm, pack of 100

• 別名: Z241520
• UNSPSCコード: 41104900
• NACRES: NB.24

特性

• 物質: circles ; cotton filters (high-quality cotton linters)
• 包装: pack of 100
• メーカー／製品名: Whatman 1540-042; Whatman Article No. 28418215 (US reference)
• パラメーター: 200 sec/100 mL speed (Herzberg); 7 psi wet burst
• 直径: 42.5 mm
• 厚さ: 160 μm
• 灰: ≤0.006%
• ポアサイズ: 8 μm (Particle retention)
• 坪量: 85 g/m²

詳細

詳細

Cytiva′s Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.

Cytiva′s business offers hardened ashless filter paper for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis.

Gravimetric analysis of acid and alkali suspensions

Cytiva′s hardened, ashless Grade 540 lab filter paper is frequently used as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. The acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper.

特徴および利点

• Acid-treated for high wet-strength
• Extremely low ash content (0.006% ash maximum)
• Nominal particle retention of 8 µm
• Medium flow rate (Herzberg filtration speed 200 s)
• High chemical resistance to strong acid and alkali suspensions

その他情報

使用分野：内部での研究目的のみ診断目的または転売目的では使用できません。

法的情報

Whatman is a registered trademark of Cytiva