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Filter paper for quantitative analysis

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SKU: № 5A, 125 мм

Manufacturer: Advantec

Availability: Order only

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Advantages:

100% high quality cotton linters cellulose
Ash content: 0.01% (except № 4A - 0.025%)
Acid washing: the filter paper is first washed in hydrochloric acid, then in hydrofluoric (hydrofluoric) acid (for № 3, 5A, 5B, 5C, 6), and then washed with ultrapure water to neutralize. Sample № 4A is additionally treated with nitric acid prior to washing.

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Description Specifications Recommended products

Description

All types of Advantec hardened quantitative filter papers are specially designed for gravimetric analysis and environmental monitoring applications.

Each type of filter paper for quantitative analysis has its own characteristics, you can familiarize yourself with them below, and select the required type for your application:

№ 3 - Retains medium particles (5-10 microns), high flow rate. Analysis of soils, fertilizers, minerals and cement

№ 5A - Retains large particles and jelly-like clots (> 10 μm). High flow rate. For filtering dioxides and metal aerosols, monitoring the environment and determining the presence of silica in steel

№ 5B - Retains medium particles (5-10 microns): CaCO3, PbSO4, CaCO4, MnCO3, ZnCO3, ZnS, AgCl

№ 5C - Retains fine particles (

№ 6 - Retains medium-fine particles (2-10 microns). For transition and precious metals

№ 7 - High retention of medium particles (5-10 microns) and gravity analysis

№ 4A - High wet strength, chemical and pH resistance. Suitable for high pressure applications. Low flow rate

Advantec Quantitative Filter Paper Specifications

Grade	Weight (g/m2)	Thickness (mm)	Flow Time*1 (sec)	Absorption speed*2 (cm)	Wet Strength*3 (kPa)	Nominal Rating (μm)	Collection Efficiency (%, 0.3 μm DOP)
№ 3 (Ashless)	113	0,25	130	7,5	12	5 (Medium)	80
№ 5А (Ashless)	97	0,22	60	9,5	10	7 (Coarse and gelatinous)	75
№ 5В (Ashless)	108	0,21	195	7,0	12	4 (Medium)	90
№ 5С (Ashless)	118	0,22	570	6,0	12	1 (Fine)	93
№ 6 (Ashless)	103	0,20	300	6,0	12	3 (Medium Fine)	90
№ 7 (Ashless)	87	0,18	200	7,0	10	4 (Medium)	85
№ 4A (Hardened)	96	0,12	915	4,0	52	1 (Very Fine)	90

*1. The flow time (measured in seconds) is the time required to filter 100 ml of distilled water at t 20 ° C and under the pressure exerted by a 10 cm water column on the surface of the filter paper with an area of 10 cm2.
*2. The rate of absorption (absorption) is the distance in centimeters that water will move vertically along the filter paper in ten minutes at a temperature of 20 ° C.
*3. Moisture resistance is the pressure measured after the filter has been saturated with water. Measurements are made with a Mullen Burst Strength tester.

Ash content of quantitative filter paper (mg / disc)

mm	№3	№5А	№5В	№5С	№6	№7
55	0,03	0,02	0,03	0,03	0,02	0,02
70	0,04	0,04	0,04	0,05	0,04	0,03
90	0,07	0,06	0,07	0,08	0,07	0,06
110	0,11	0,09	0,10	0,11	0,10	0,08
125	0,14	0,12	0,13	0,15	0,13	0,11
150	0,20	0,17	0,19	0,21	0,18	0,15
185	0,30	0,26	0,29	0,32	0,28	0,23

Ordering information

The filter discs of the following diameters (mm) are available: 55, 70, 90, 110, 125, 150, 185, 240, 285, 300, 330, 360, 400, 500.
Additional sizes available upon prior order
To order, first indicate the type of disc required, and then its diameter, for example: No. 5A, 125 mm, No. 6, 55 mm, etc.
Package quantity - 100 discs

Specifications

Application area	Environmental monitoring, Laboratory analysis
Type	Laboratory
Industry	Ecology, Chemical

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