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1. Before inhaling the sample, suck about 1ml of air into the syringe, so that the liquid residue can be minimized
2. Inhale the sample into the syringe, turn the syringe upside down and clear all residues on the top
3. Connect the needle filter to the syringe and tighten gently to ensure a good seal
4. Filter the sample in the syringe and inject it into the sample bottle, and then follow the steps to maximize the recovery rate
Remove the filter, draw air into the syringe, reconnect the filter head, and push out all residual samples.
Use syringes with a volume of less than 10ml with caution, because the pressure of such syringes is sufficient to burst the needle filter.
It is best to choose the filter membrane recommended in the operating procedures.
| Acids | Ethyl Acetate/Methyl Acetate | Trichloroethylene |
| Acetic, 25% | Amyl Propyl/Butyle Acetate | Monochlorobenzene, Freon |
| Bases | Propyl Acetate | Carbon Tetrachloride |
| Ammonium Hydroxide, 25% | Benzyl Benzoate | Hydrocarbons |
| Sodium Hydroxide, 3 Normal | Isopropyl Myristate | Hexane, Xylene |
| Alcohols | Organic Oxides | Toulene, Benzene |
| Amyl Alcohol (Butanol) | Ethyl Ether | Kerosene, Gasoline |
| Benzyl Alcohol | Dioxane/Tetrahydrofuran | Ketones |
| Butyl Alcohol | Triethanolamine | Acetone |
| Ethanol, 98% | Dimethylsulfoxide (DMSO) | Cyclohexanone |
| Ethylene Glycol | Amines and Amides | Methyl Ethyl Ketone |
| Glycerine (Glycerol) | Diethylacetamide | Icepropylacetone |
| Isopropanol | Triethanolamine | Miscellaneous |
| Methanol, 98% | Pyridine | Formaldehyde Aqueous, 30% |
| n-Propanol | Acetonitrile | Hydrogen Peroxide, 30% |
| Propylene Glycol | Halogenated Hydrocarbons | |
| Esters | Chloroform |
| Acids | Methanol, 98% | Pyridine |
| Acetic, Glacial | n-Propanol | Acetonitrile |
| Acetic 25% | Propylene Glycol | Halogenated Hydrocarbons |
| Hydrochloric Concentrated | Esters | Methylene Chloride |
| Hydrochloric 25% | Ethyl Acetate/ Methyl Acetate | Chloroform |
| Sulfuric Concentrated | Amyl Propyl/ Butyle Acetate | Trichloroethylene |
| Sulfuric 25% | Propyl Acetate | Monochlorobenzene Freon |
| Nitric Concentrated | Propylene Glycol Acetate | Carbon Tetrachloride |
| Nitric 25% | 2-Ethoxyethyl Acetate | Hydrocarbons |
| Phosphoric 25% | Methyl Cellosolve Acetate | Hexane Xylene |
| Formic 25% | Benzyl Benzoate | Toulene Benzene |
| Trichloroacetic 10% | Isopropyl Myristate | Kerosene Gasoline |
| Bases | Tricresyl Phosphate | Tetralin Decalin |
| Ammonium Hydroxide 25% | Organic Oxides | Ketones |
| Sodium Hydroxide 3 Normal | Ethyl Ether | Acetone |
| Alcohols | Dioxane/ Tetrahydrofuran | Cyclohexanone |
| Amyl Alcohol (Butanol) | Triethanolamine | Methyl Ethyl Ketone |
| Benzyl Alcohol | Dimethyl sulfoxide (DMSO) | Icepropylacetone |
| Butyl Alcohol | Isopropyl Ether | Methyl Isobutyl Ketone |
| Ethanol 70% | Amines and Amides | Miscellaneous |
| Ethanol 98% | Dimethyl Formamide | Phenol Aqueous 10% |
| Ethylene Glycol | Diethylacetamide | Formaldehyde Aqueous 30% |
| Glycerine (Glycerol) | Triethanolamine | Hydrogen Peroxide 30% |
| Isopropanol | Aniline | Silicone Oil & Mineral Oil |
| Acids | Ethanol, 98% | Halogenated Hydrocarbons |
| Acetic, Glacial | Ethylene Glycol | Methylene Chloride |
| Acetic, 25% | Glycerine (Glycerol) | Chloroform |
| Hydro-chloric, Concentrated | Isopropanol | Trichloroethylene |
| Hydro-chloric, 25% | Methanol, 98% | Mono-chloro-benzene, Freon |
| Sulfuric, 25% | n-Propanol | Carbon Tetra-chloride |
| Nitric, Concentrated | Propylene Glycol | Hydro-carbons |
| Nitric, 25% | Esters | Hexane, Xylene |
| Bases | Ethyl Acetate/ Methyl Acetate | Toulene, Benzene |
| Sodium Hydroxide, 3 Normal | Organic Oxides | Kerosene, Gasoline |
| Alcohols | Ethyl Ether | Tetralin, Decalin |
| Amyl Alcohol (Butanol) | Isopropyl Ether | Ketones |
| Benzyl Alcohol | Amines and Amides | Miscellaneous |
| Butyl Alcohol | Aceto-nitrile | Formaldehyde Aqueous, 30% |
| Ethanol, 70% | Silicone Oil & Mineral Oil |
| Acids | Methanol, 98% | Trichloroethylene |
| Phosphoric, 25% | n-Propanol | Monochlorobenzene, Freon |
| Trichloroacetic, 10% | Esters | Hydrocarbons |
| Bases | Benzyl Benzoate | Hexane, Xylene |
| Ammonium Hydroxide, 25% | Isopropyl Myristate | Toulene, Benzene |
| Alcohols | Tricresyl Phosphate | Kerosene, Gasoline |
| Amyl Alcohol (Butanol) | Organic Oxides | Tetralin, Decalin |
| Butyl Alcohol | Ethyl Ether | Ketones |
| Ethanol, 70% | Triethanolamine | Icepropylacetone |
| Ethanol, 98% | Isopropyl Ether | Miscellaneous |
| Ethylene Glycol | Amines and Amides | Formaldehyde Aqueous, 30% |
| Glycerine (Glycerol) | Triethanolamine | Hydrogen Peroxide, 30% |
| Isopropanol | Halogenated Hydrocarbons | Silicone Oil & Mineral Oil |
| Acids | Amyl Alcohol (Butanol) | Organic Oxides |
| Acetic, Glacial | Butyl Alcohol | Ethyl Ether |
| Acetic, 25% | Ethanol, 70% | Isopropyl Ether |
| Hydrochloric, Concentrated | Ethanol, 98% | Amines and Amides |
| Hydrochloric, 25% | Ethylene Glycol | Halogenated Hydrocarbons |
| Sulfuric, 25% | Glycerine (Glycerol) | Hydrocarbons |
| Nitric, 25% | Isopropanol | Ketones |
| Bases | Methanol, 98% | Miscellaneous |
| Ammonium Hydroxide, 25% | n-Propanol | Formaldehyde Aqueous, 30% |
| Sodium Hydroxide, 3 Normal | Propylene Glycol | Silicone Oil & Mineral Oil |
| Alcohols | Esters |
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