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Whatman glass microfiber filters, without binder, grade 934-AH

934-AH: 1.5 um


Filters made of 100% borosilicate glass microfibre, chemically inert.
These filters combine filtration speed and high load capacity with a retention of very fine particles (even sub micron).

They can be used at temperatures up to 500 ° C and are ideal for air filtration and gravimetric analyzes of volatile materials that involve the incineration of residues.

They have a very fine capillary structure capable of absorbing much higher amounts of water than equivalent cellulose filters and therefore are ideal for spot tests and liquid scintillation counting methods.

They can also be made completely transparent for subsequent microscopic examinations.

Grade 934-AH: 1.5 µm

The high retention efficiency at high filtration rates and the high load capacity of this established filter ensure superior retention of fine particles.
It is a borosilicate glass microfiber filter, with smooth surface and high retention and resistant to temperatures above 500 ° C.
Specified in Standard Methods 2540D for the determination of total suspended solids in water, the elimination of turbidity and the filtration of bacterial cultures.
Grade 934-AH is used for a wide range of laboratory applications.
It is recommended for water pollution monitoring, cell harvesting, liquid scintillation counting and air pollution monitoring.

Technical features

Nominal retention of particles in liquids (at 98% efficiency)

1.5 µm

Nominal thickness

435 µm

Nominal base weight

64 g / m²

Nominal air flow

3.7 s / 100 ml / in

Material

Borosilicate glass
Code Description Pieces per pack.
481827021 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 21 mm 100
481827024 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 24 mm 100
481827025 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 25 mm 100
481827037 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 37 mm 100
481827042 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 42.5 mm 100
481827047 Whatman glass microfiber filters, without binder, grade 934-AH, diam. mm 47 100
481827055 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 55 mm 100
481827070 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 70 mm 100
481827090 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 90 mm 100
481827110 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 110 mm 100
481827125 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 125 mm 100
481827150 Whatman glass microfiber filters, without binder, grade 934-AH, diam. 150 mm 100

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ENRICO BRUNO s.r.l.
Via Duino 140
10127 Torino Italy
Tel. +39 011 3160808
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