Whatman Qualitative Filter Paper Grade 540 circle 185 mm

₹19,070.00 + GST 15% off
₹16,209.50 + ₹2,917.71 GST
₹19,127.21 (Incl. of all taxes)
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Overview

Description

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.

  • 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

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.

Specifications

Grade

Grade 540

Format

Circles

Type

Hardened Ashless

Typical Particle Retention in Liquid

8 µm

Nominal thickness

160 µm

Typical water flow rate at 45 psi (3.1 bar)

97 ml/min

Nominal basis weight

85 g/m²

Nominal air flow rate

13 s/100 mL/in²

Nominal Ash Content

0.005%

Material

High-quality cotton linters

Alpha Cellulose Content Min.

≥98%

Typical Trace Element Levels

Aluminium 3.4 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 14.7 µg/g Chromium 1.1 µg/g Copper 8.2 µg/g Iron 16.3 µg/g Lead <0.5 µg/g Magnesium 3.3 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 3.7 µg/g Silicon <6 µg/g Sodium 17 µg/g Zinc 87.8 µg/g

Application

Frequently used in the gravimetric analysis of metals in acid/alkali solutions and in collecting hydroxides after precipitation by strong alkalis.

Diameter

185 mm

 

More Information
Product Code 1540-185
HSN Code 48232000
Brand Whatman
Usually dispatched in 2-3 weeks
Pack Size 100/PCK

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