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Key Documents

WHA1542055

Whatman® quantitative filter paper, hardened ashless, Grade 542

circles, diam. 55 mm, pack of 100

别名:

Z740659

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About This Item

分類程式碼代碼:
41104900
NACRES:
NB.24

材料

circles
cotton filters (high-quality cotton linters)

包裝

pack of 100

製造商/商標名

Whatman 1542-055
Whatman Article No. 28418247 (US reference)

參數

2510 sec/100 mL speed (Herzberg)
6 psi wet burst

直徑

55 mm

厚度

150 μm

灰分

≤0.006%

孔徑

2.7 μm (Particle retention)

基重

93 g/m2

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一般說明

These are the supreme hardened ashless quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade 542: 2.7 μm (slow filter paper)

High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.

特點和優勢

  • High wet-strength
  • Acid-hardened for resistance to strong acid and alkali solutions
  • Nominal particle retention rating of 2.7 µm
  • Herzberg filtration speed of 2510 s
  • Extremely low ash content (0.006% ash maximum)

其他說明

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

法律資訊

Whatman is a registered trademark of Cytiva

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