10 in stock
Grade 93: 10 μm*
This filter paper is intermediate in speed and retention between Grades 1 and 4.
Available in a dispenser pack, which can be attached to the wall or bench, placed on a
shelf either upright or flat, and used as a normal carton or as a convenient dispenser.
The envelopes are released individually for easy one-at-a-time removal.
Package and envelopes are clearly marked for size and content.
Rs.922.50 Rs.1,230.00
Wet strengthened/general purpose filter papers.
Wet strengthened grades
These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin.
Their use in normal qualitative applications will not introduce any significant impurities into the filtrate.
The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations, etc.
Some wet strengthened grades are available in folded (prepleated) forms.
| Variation Codes | 1093-125 |
|---|
Grade 42: 2.5 μm*(Ashless Grades)
Used for critical gravimetric analysis with the finest particle retention of all
Whatman cellulose filter papers.
Typical analytical precipitates include barium sulfate, metastannic acid, and finely precipitated calcium carbonate.
Grade 40: 8 μm*
The classic general purpose ashless filter paper with medium speed and retention.
Typical applications include gravimetric analysis for numerous components in cements,clays, iron, and steel products; as a primary filter for separating solid matter from aqueous extracts in general soil analysis; quantitative determination of sediments in milk, and as a pure analytical grade clean-up filter for solutions prior to AA
spectrometry.
Also used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere.
Cellulose extraction thimbles are produced from high-quality alpha cellulose cotton
linter and have excellent mechanical strength and retention.
Standard single thickness thimbles have a wall thickness of approximately 1 mm
(10.0 μm nominal particle retention).
Grade 5: 2.5 μm*
The maximum degree of fine particle filtration in the qualitative range.
Capable of retaining the fine precipitates encountered in chemical analysis.
Slow flow rate.
Excellent clarifying filter for cloudy suspensions and for water and soil analysis.
Also available prepleated as Grade 5V.
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