Whatman Quantitative Filter Papers, Ashless, Grade 42
Whatman Quantitative Filter Papers, Ashless, Grade 42
Whatman Quantitative Filter Papers, Ashless, Grade 42
Our high-purity Whatman ashless Grade 42 quantitative filter papers are suitable for a wide range of critical analytical filtration procedures for quantitative analysis. Grade 42 filter papers have the finest retention of all Whatman ashless filter paper grades. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.
Ashless: 0.007% ash maximum
Fine (2.5 μm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation
Herzberg filtration speed of 1870 s
Commonly used as a calcium carbonate filter
Particularly suitable for gravimetric analysis
Whatman Grade 42 quantitative papers from GE Healthcare’s Life Sciences business are designed for retention of extremely small particles. A common example is use of Grade 42 as a calcium carbonate filter for analysis in the cement industry.
Other typical precipitates for gravimetric analysis include barium sulfate and metastannic acid for use in glazes, coatings, and pigments. The high purity of GE’s Grade 42 filters also makes them suitable for processes that require ashing.
Ashless filter papers for gravimetric and instrumental analysis
GE offers a range of Whatman ashless filter papers for your gravimetric analysis needs. See our other Whatman ashless grades to find the right filter paper for your sample, or use our hardened Whatman ashless filter paper grades if your analysis involves strong acid or alkali suspensions.
What are Whatman ashless quantitative filter papers?
Whatman ashless quantitative filter papers are high-purity filters that support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples. GE’s high-purity Whatman ashless filter papers are suited for:
Environmental analysis: soil filtration analysis, when separating solid matter from aqueous extracts
Retention of small particles
Collection of trace elements and radionuclides from the atmosphere
Specification
Grade :Grade 42
Format :Sheets
Type :Ashless
Dimensions :Flag
Typical Particle Retention in Liquid1 :2.5 µm
Nominal Thickness :200 µm
Typical water flow rate2 :5 ml/min
Nominal Basis Weight :100 g/m²
Nominal Air Flow Rate :96 s/100 mL/in²
Nominal Ash Content3 :0.007%
Material :High-quality cotton linters
Alpha Cellulose Content Min. :≥98%
Typical Trace Element Levels :Aluminium 2.5 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g
Application :Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For critical gravimetric analysis with the finest particle retention.
Whatman Quantitative Filter Papers, Ashless, Grade 42 Whatman Filter Papers Range of products are mostly available in ready stock and it can delivered immediately throughout india
Apart from supplying Whatman Filter Papers products in India through dealers network, catering to a variety of customers ranging from Electrical Contractors, Engineering Industries, Turnkey Construction Companies, Railways, Defence Installations, Research Laboratories, Educational Institutes and various Research and Development laboratories of leading national and multinational companies.
We DFT TECH, are Whatman Filter Papers Authorized Distributors, Importers, Stockists, Dealers and Suppliers of Whatman Quantitative Filter Papers, Ashless, Grade 42 Products in Chennai, Assam, Madurai, Coimbatore, Nagaland, Kerala, Manipur, Mizoram, Haryana, Sikkim, Visakhapatnam, Tirchy, Hosur, Anjaw, Tumkur, Mysore, Kolkatta, Salem, Poonamalle and etc..
