HARDENED ASHLESS FILTER PAPERS FOR QUANTITATIVE ANALYSIS


DESCRIPTION

    

Hardened ashless filters (approx. 0.002 %), especially recommended for vacuum and pressure filtration, and for the use of acidic and alkaline solutions
  • Made of super-refined cotton linters and cellulose; acid-washed.
  • α-cellulose content above 95 %.
  • High wet strength; easy to scrap off or wash off precipitates.
  • High resistance to aggressive chemical components, like sulfuric and nitric acids (up to 40 % at 50 °C) and alkalis (up to 10% at 20 °C).
  • For analytical applications, routine quantitative and /or gravimetric procedures.

top ^


TECHNICAL SPECIFICATIONS

Grade Properties
Filtration Herzberg
(s)
Retention of particles
µm)

Weight
(g/m²)
Thickness
(mm)
Ash**
(%)
FP1505 Fast
50
12-25
88
0,17
0.002
FP1506 Medium
170
4-12
90
0,16
0.002
FP1507 Slow
600*
≤2
90
0,14
0.002

 

* Measured with 150 mm water column instead of 50 mm
** Average value

top ^


APPLICATIONS

Ref. FP1505
  • For coarse crystalline precipitates.
  • Determination of proteins.
  • Determination of fibers in foodstuff.s
  • Cement analysis.
Ref. FP1506
  • For fine crystalline precipitates.
  • Gravimetric determination of metals in acidic/alkaline solutions.
Ref. FP1507
  • For very fine crystalline precipitates.
  • Gravimetric analysis of fine metals: barium and lead sulfate, nickel and tin sulfide, oxalate and calcium fluoride.

top ^


ORDERING INFO

∅ / Grade
FP1505
fast
FP1506
medium-Fast
FP1507
Slow
70 mm
DP1505070
DP1506070
DP1507070
90 mm
DP1505090
DP1506090
DP1507090
110 mm
DP1505110
DP1506110
DP1507110
125 mm
DP1505125
DP1506125
DP1507125
150 mm
DP1505150
DP1506150
DP1507150
185 mm
DP1505185
DP1506185
DP1507185
240 mm
DP1505240
DP1506240
DP1507240


Presentation: 100 units / box
Other sizes available on request

top ^