Dust filter membrane

name	fiber structure	Collection principle	characteristic	Common specifications
Polypropylene dust detection filter membrane	Cellulose interweaves and overlaps with each other to form fibrous mesh holes, but the uniformity of pore size is poor, making it impossible to produce filter membranes with different pore sizes	All collection principles, significant electrostatic attraction effect	① Low moisture absorption, strong static electricity, low ventilation resistance, and good mechanical strength. ② Not heat-resistant	Ф25mm； Ф30mm； Ф37mm； Ф40mm； Ф47mm； Ф50mm； Ф75mm； Ф90mm； Ф110mm； 20×25cm;
Perchloroethylene dust detection filter membrane		All collection principles, significant electrostatic attraction effect	① Low moisture absorption, strong static electricity, low ventilation resistance, and good mechanical strength. ② Not heat-resistant, soluble in some organic solvents such as butyl acetate.
glass fiber filters		Diameter interception, inertial collision, diffusion settlement	① Low moisture absorption, low ventilation resistance, high sampling efficiency, high temperature resistance, insoluble in ordinary acids and organic solvents ② Almost no electrostatic attraction, loose texture, poor mechanical strength, and possible weighing errors when fibers fall off.
Microporous filter membrane (Acetic acid nitric acid mixed fiber filter membrane)	Cellulose matrix is interconnected into sieve pores, with uniform pore size, which can be used to produce filter membranes with different pore sizes	Diameter interception, inertial collision, diffusion settlement	① Good mechanical strength, relatively heat-resistant, and high sampling efficiency. ② High ventilation resistance, soluble in strong acids and some organic solvents	Ф25mm； Ф30mm； Ф37mm； Ф40mm； Ф47mm； Ф50mm； Ф75mm； Ф90mm； Ф110mm； 20 × 25cm. Aperture: 0.22μm; 0.3μm; 0.45μm; 0.8μm; 5μm;
Polyvinyl chloride (PVC) filter membrane		Diameter interception, inertial collision, diffusion settlement	① Good mechanical strength, relatively heat-resistant, and high sampling efficiency. ② Low ventilation resistance, soluble in strong acids and some organic solvents
Polytetrafluoroethylene (PTFE) filter membrane		Diameter interception, inertial collision, diffusion settlement	① Good mechanical strength, relatively heat-resistant, and high sampling efficiency. ② High ventilation resistance, acid and alkali resistance
Quartz fiber filter membrane		Diameter interception, inertial collision, diffusion settlement	① Good mechanical strength, heat resistance, and high sampling efficiency. ② The metal blank value is low.

Reference standards:

GBZ/T 192.1-2007 Determination of Dust in Workplace Air Part 1: Total Dust Concentration

Filter membrane: vinyl chloride filter membrane or other dust detection filter membrane.

Dust concentration in the air≤50mg/m³When using diameter37mm or 40mm filter membrane; Dust concentration>50mg/m³When using diameter75mm filter membrane.

GBZ/T 192.2-2007 Determination of Dust in Workplace Air Part 2: Concentration of Respiratory Dust

Filter membrane: vinyl chloride filter membrane or other dust detection filter membrane.

GBZ/T 192.3-2007 Determination of Dust in Workplace Air Part 3: Dust Dispersion

Filter membrane: vinyl chloride filter membrane

GBZ/T 192.4-2007 Determination of Dust in Workplace Air Part 4: Free Silica Content

Filter membrane: vinyl chloride filter membrane or other dust detection filter membrane.

GBZ/T 192.5-2007 Determination of Dust in Workplace Air Part 5: Concentration of Asbestos Fibers

Filter membrane: microporous filter membrane or vinyl chloride fiber filter membrane, pore size0.8μm。

GBZ/T 160.40-2004 Determination of Toxic Substances in Workplace Air - Mixed Hydrocarbon Compounds

1. Solvent extraction and weighing method for paraffin smoke

Glass fiber dust detection filter membrane

GBZ/T 160.44-2004 Determination of toxic substances in workplace air - Polycyclic aromatic hydrocarbons

1. Anthracene, phenanthrene, and 3,4-benzo (a) pyrene

Glass fiber dust detection filter membrane

GBZ/T 160.60-2004 Determination of Toxic Substances in Workplace Air - Anhydride Compounds

1. Solvent elution of phthalic anhydride - gas chromatography method

Glass fiber dust detection filter membrane

GBZ/T 160.66-2004 Determination of Toxic Substances in Workplace Air - Aromatic Ester Compounds

1. UV spectrophotometry of triphenylphosphate ester

Glass fiber dust detection filter membrane

GBZ/T 160.74-2004 Determination of Toxic Substances in Workplace Air - Aromatic Nitro Compounds

1. Capillary Column Gas Chromatography Method for Nitrotoluene and Dinitrotoluene

Fiberglass dust filter membrane, used for sampling aerosols

2. Packing column gas chromatography method for trinitrotoluene

Glass fiber dust detection filter membrane, used forHeating in a 500 ℃ high-temperature furnace for 40 minutes

GBZ/T 160.77-2004 Determination of Toxic Substances in Workplace Air - Organochlorine Pesticides

1. Solvent elution gas chromatography method for BHC and DDT

Glass fiber dust detection filter membrane

GBZ/T 160.78-2007 replaces GBZ/T 160.78-2004 for the determination of toxic substances in workplace air and pyrethroid pesticides

1. High performance liquid chromatography method for deltamethrin and cypermethrin

Glass fiber dust detection filter membrane

2. High performance liquid chromatography method for fenvalerate

Glass fiber dust detection filter membrane

GBZ/T 160.81-2004 Determination of Toxic Substances in Workplace Air - Biological Compounds

1. Antibody binding colorimetric method for enzymes in laundry detergent containing enzymes

Glass fiber dust detection filter membrane

GBZ/T 160.1-2004 Determination of Toxic Substances in Workplace Air - Antimony and Its Compounds

1. Faas

Micro porous dust filter membrane aperture0.8μm

2. gfaas

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.2-2004 Determination of Toxic Substances in Workplace Air - Barium and Its Compounds

1. Plasma emission spectroscopy method

Microporous filter membrane aperture0.8μm

2. Dibromo-p-methylazomethanesulfonate spectrophotometric method

Microporous filter membrane aperture0.8μm

GBZ/T 160.3-2004 Determination of Toxic Substances in Workplace Air - Beryllium and Its Compounds

1. Mulberry pigment fluorescence spectrophotometry

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.4-2004 Determination of Toxic Substances in Workplace Air - Bismuth and Its Compounds

1. Atomic fluorescence spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.5-2004 Determination of Toxic Substances in Workplace Air - Cadmium and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.6-2004 Determination of Toxic Substances in Workplace Air - Calcium and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.7-2004 Determination of Toxic Substances in Workplace Air - Chromium and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.8-2004 Determination of Toxic Substances in Workplace Air - Cobalt and Its Compounds

1. Flame atomic absorption spectroscopy

Microporous filter membrane aperture0.8μm

GBZ/T 160.9-2004 Determination of Toxic Substances in Workplace Air - Copper and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.11-2004 Determination of Toxic Substances in Workplace Air - Lithium and Its Compounds

1. Lithium hydride emission spectroscopy method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.12-2004 Determination of toxic substances in workplace air - Magnesium and its compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.13-2004 Determination of toxic substances in workplace air - Manganese and its compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

2. Phosphate potassium periodate spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.15-2004 Determination of Toxic Substances in Workplace Air - Molybdenum and Its Compounds

1. Thiocyanate spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

2. Plasma emission spectroscopy method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.16-2004 Determination of Toxic Substances in Workplace Air - Nickel and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.17-2004 Determination of toxic substances in workplace air - Potassium and its compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.18-2004 Determination of toxic substances in workplace air - Sodium and its compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.19-2004 Determination of Toxic Substances in Workplace Air - Strontium and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.20-2004 Determination of Toxic Substances in Workplace Air Tantalum and Its Compounds

1. Iodine green spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.21-2004 Determination of Toxic Substances in Workplace Air - Thallium and Its Compounds

1. Graphite furnace atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.22-2004 Determination of Toxic Substances in Workplace Air - Tin and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.23-2004 Determination of Toxic Substances in Workplace Air - Tungsten and Its Compounds

1. Potassium thiocyanate spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.24-2004 Determination of Toxic Substances in Workplace Air - Vanadium and Its Compounds

1. N-cinnamoyl-o-toluidine spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

2. Catalytic electrode method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.25-2004 Determination of Toxic Substances in Workplace Air - Zinc and Its Compounds

1. Flame atomic absorption spectroscopy

Micro porous dust filter membrane aperture0.8μm

2. Dithizone spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.26-2004 Determination of Toxic Substances in Workplace Air - Zirconium and Its Compounds

1. Xylenol Orange spectrophotometric method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.29-2004 Determination of Toxic Substances in Workplace Air Inorganic Nitrogen Compounds

1. Hydrogen cyanide and sodium isoniazid of cyanide - sodium barbituratespectrophotometer

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.30-2004 Determination of Toxic Substances in Workplace Air Inorganic Phosphorus Compounds

1. Ammonium molybdate spectrophotometric method for phosphoric acid

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.33-2004 Determination of Toxic Substances in Workplace Air - Sulfur Compounds

1. Barium chloride turbidity method for sulfur trioxide and sulfuric acid

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.34-2004 Determination of Toxic Substances in Workplace Air - Selenium and Its Compounds

1. Atomic fluorescence spectroscopy

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.35-2004 Determination of Toxic Substances in Workplace Air - Tellurium and Its Compounds

1. Hydride atomic fluorescence spectrometry

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.51-2007 replaces GBZ/T 160.51-2004 for the determination of toxic substances in workplace air and phenolic compounds

1. High performance liquid chromatography for β - naphthol and trinitrophenol

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.57-2004 Determination of Toxic Substances in Workplace Air - Quinone Compounds

1. High performance liquid chromatography method for hydroquinone

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.59-2004 Determination of Toxic Substances in Workplace Air - Carboxylic Compounds

1. UV spectrophotometry of terephthalic acid

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.66-2004 Determination of Toxic Substances in Workplace Air - Aromatic Ester Compounds

1. Solvent elution with dibutyl phthalate - gas chromatography method

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.79-2004 Determination of Toxic Substances in Workplace Air - Pharmaceutical Compounds

1. Solvent desorption of cortisone and norgestrel using high-performance liquid chromatography

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.80-2004 Determination of Toxic Substances in Workplace Air - Explosive Compounds

1. High performance liquid chromatography of nitroguanidine

Micro porous dust filter membrane aperture0.8μm

2. UV spectrophotometry of nitroguanidine

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.83-2004 Determination of Toxic Substances in Workplace Air - Indium and Its Compounds

1. Aerosol colloidal indium and its compounds

Micro porous dust filter membrane aperture0.8μm

GBZ/T 160.84-2004 Determination of Toxic Substances in Workplace Air - Yttrium and Its Compounds

1. Gas soluble colloidal yttrium and its compounds

Micro porous dust filter membrane aperture0.8μm

HJ/T 27-1999 Determination of Hydrogen Chloride in Exhaust Gas from Fixed Pollution Sources - Mercury thiocyanate spectrophotometric method

Acetate fiber microporous membrane:0.3μm

HJ 480-2009 replaces GB/T 15434-1995 Determination of Fluoride in Environmental Air - Membrane Sampling Ion Selective Electrode Method

acetic acid-Nitrate fiber microporous membrane: pore size 5 μ m, diameter 92mm

HJ 539-2015 replaces HJ 539-2009 for the determination of lead in ambient air using graphite furnace atomic absorption spectrophotometry

Quartz fiber filter membrane: for particles larger thanThe retention efficiency of 0.3 μ m particles is not less than 99.9%. The background concentration value should meet the measurement requirements.

HJ 544-2016 replaces HJ 544-2009 Determination of Fixed Source Waste Gas and Sulfuric Acid Mist Ion Chromatography Method

Quartz fiber filter membrane:90mm

HJ 546-2015 Determination of Phosphorus pentoxide in ambient air Molybdenum blue spectrophotometric method

Vinyl chloride filter membrane:90mm

HJ548-2016 replaces HJ548-2009 for the determination of hydrogen chloride in fixed source exhaust gas. Silver nitrate volumetric method

Acetate fiber microporous membrane: pore size0.3μm

HJ549-2016 replaces HJ549-2009. Determination of hydrogen chloride in ambient air and exhaust gas by ion chromatography method

Polytetrafluoroethylene or quartz filter membrane: for particles larger thanThe retention efficiency of 0.3 μ m particles is not less than 99.9%.

Acetate fiber microporous membrane:0.45μm

HJ 646-2013 Determination of Polycyclic Aromatic Hydrocarbons in Air and Waste Gas Gas and Particulate Matter by Gas Chromatography Mass Spectrometry

Ultra fine glass fiber filter membrane or quartz fiber filter membrane

Select the corresponding specification of filter membrane based on the sampling flow rate, and the filter membrane is suitable for particles with a diameter greater thanThe retention efficiency of 0.3 μ m standard particles shall not be less than 99.9%
At an airflow velocity ofAt 0.45m/s, the resistance of a single filter membrane is not greater than 3.5kPa. At this airflow speed, extract air purified by a high-efficiency filter for 5 hours, and the weight loss per square centimeter is not greater than 0.012mg. Before use, heat it in a muffle furnace at 400 ℃ for more than 5 hours, cool it, wrap it in aluminum foil, and store it in a filter membrane box to ensure that the filter membrane is not contaminated before and after sampling, and is in a flat and unfolded state before sampling.

HJ 647-2013 Determination of Polycyclic Aromatic Hydrocarbons in Air and Waste Gas Gas and Particulate Matter by High Performance Liquid Chromatography

Ultra fine glass (or quartz) fiber filter membrane: Same asHJ 646-2013 Requirements

HJ 657-2013 Determination of lead and other metallic elements in ambient air and exhaust particulate matter Inductively coupled plasma mass spectrometry method

Glass fiber or quartz fiber filter membrane: for particles larger thanThe retention efficiency of 0.3 μ m particles is not less than 99.9%. The background concentration value should meet the measurement requirements.

HJ 688-2013 Determination of Hydrogen Fluoride in Waste Gas from Fixed Pollution Sources by Ion Chromatography (Provisional)

Microporous membrane: pore size0.45μm， The material is acetate fiber or polytetrafluoroethylene (PTFE)

HJ 690-2014 Determination of Benzene Soluble Substances in Waste Gas from Fixed Pollution Sources by Soxhlet Extraction Gravimetric Method

Ultra fine glass fiber filter membrane: diameter90mm， The retention efficiency of the filter membrane for 0.3 μ m particles is not less than 99.9%.

HJ 777-2015 Determination of Metal Elements in Air and Exhaust Particulate Matter Inductively Coupled Plasma Emission Spectroscopy

Quartz filter membrane, PTFE filter membrane, or organic filter membrane such as polypropylene: forThe retention efficiency of 0.3 μ m particles is not less than 99.9%.

HJ 779-2015 Determination of Hexavalent Chromium in Environmental Air - Post Column Derivative Ion Chromatography Method

Sampling filter membrane: made of cellulose material,47mm

Water based microporous membrane: pore size0.22μm。

GB/T 15264-94 Determination of lead in ambient air Flame atomic absorption spectrophotometric method

glass fiber filters

GB/T 15439-1995 Determination of benzo [a] pyrene in ambient air - High performance liquid chromatography method

glass fiber filters