AccuStandard®

EPA Method 500 SeriesMethod 521-524Method 521 Nitrosamines by SPE & Capillary Column GCAnalyte Stock SolutionM-521 $ 50 / 1 x 1 mL200 µg/mL each in CH 2 Cl 2 7 comps.N-NitrosodimethylamineN-NitrosomethylethylamineN-NitrosodiethylamineN-Nitrosodi-n-propylamineInternal Standard Stock SolutionM-521-ISM-521-IS-PAK1.0 mg/mL in CH 2 Cl 2N-Nitrosodi-n-propylamine-d 14N-Nitrosodi-n-butylamineN-NitrosopyrrolidineN-NitrosopiperidineSurrogate Standard Stock SolutionM-521-SSM-521-SS-PAK1.0 mg/mL in CH 2 Cl 2N-Nitrosodimethylamine-d 6$ 50 / 1 x 1 mLSAVE 20% $ 200 / 5 x 1 mL$ 35 / 1 x 1 mLSAVE 20% $ 140 / 5 x 1 mLMethod 524.2 Volatile Organic Compounds by GC/MSAddition to Method 524.2 (Revision 4.0 August 1992)M-524R-B$ 55 / 1 x 1 mLM-524R-B-PAKSAVE 20% $ 220 / 5 x 1 mL2.0 mg/mL each in MeOH 24 comps.AcetoneAcrylonitrileAllyl chloride2-ButanoneCarbon disulfideChloroacetonitrile1-Chlorobutanetrans-1,4-Dichloro-2-butene1,1-DichloropropanoneDiethyl etherEthyl methacrylateHexachloroethaneMixtures of Internal, Surrogate Standards &Fortification SolutionsInternal StandardsSee M-502.2 VOCs by PID/ELCD54 Liquid & 6 Gaseous Compounds2-HexanoneMethacrylonitrileMethylacrylateMethyl iodideMethylmethacrylate4-Methyl-2-pentanoneMethyl-t-butyl etherNitrobenzene2-NitropropanePentachloroethanePropionitrileTetrahydrofuranM-502-IS$ 20 / 1 x 1 mLM-502-IS-PAKSAVE 20% $ 80 / 5 x 1 mL2.0 mg/mL each in MeOH 2 comps.Adehydes and Ketones in Alcohol SolventsStandards containing aldehydes and ketones in methanol are given shorterexpiration periods because of their ability to form acetals and ketals.AccuStandard adds stabilizers to inhibit this reaction. To enhance stability,freezer storage is required.1-Chloro-2-bromopropaneFluorobenzeneM-502-IS-2$ 30 / 1 x 1 mLM-502-IS-2-PAKSAVE 20% $ 120 / 5 x 1 mL2.0 mg/mL each in MeOH 3 comps.1-Chloro-2-bromopropaneFluorobenzeneMethylene chloride-d 2Analyzing VolatilesSpecial Considerations for Volatile AnalytesVolatile Analytes, especially gases, can be troublesome to analyze. To providethe best possible standard we suggest the following procedures:1. Keep the ampules cool (follow the storage conditions on the label).2. Prior to use, invert the ampule several times to ensure the gases are in thesolution, not in the headspace. Mixing too vigorously can cause the gases tobe lost as well.3. Use freshly opened ampules whenever possible.4. When transferring, take care to avoid losses of the very volatilecomponents. For example, holding the barrel of a syringe in your hand canwarm it enough to lose some of the most volatile components.5. If using the purge and trap (PT) system is giving questionable results, try adirect liquid injection. If the results are not as expected, there may be aproblem with the PT apparatus.M-524-IS$ 20 / 1 x 1 mLM-524-IS-PAKSAVE 20% $ 80 / 5 x 1 mL2.0 mg/mL each in MeOH 2 comps.1,2-Dichlorobenzene-d 4M-524-IS-2M-524-IS-2-PAK2.0 mg/mL in MeOHM-524-IS-2-10X NEW20 mg/mL in MeOHFluorobenzeneFortification StandardFluorobenzene$ 12 / 1 x 1 mLSAVE 20% $ 48 / 5 x 1 mL$ 20 / 5 x 1 mLM-524-FS$ 25 / 1 x 1 mLM-524-FS-PAKSAVE 20% $ 100 / 5 x 1 mL2.0 mg/mL each in MeOH 3 comps.4-BromofluorobenzeneFluorobenzene1,2-Dichlorobenzene-d 4Surrogate StandardM-524-SS$ 20 / 1 x 1 mLM-524-SS-PAKSAVE 20% $ 80 / 5 x 1 mL2.0 mg/mL each in MeOH 2 comps.4-Bromofluorobenzene 1,2-Dichlorobenzene-d 4GC/MS Tuning SolutionM-624-SS-03-10X2.0 mg/mL each in MeOH$ 10 / 1 x 1 mLp-Bromofluorobenzene168 AccuStandard is accredited to ISO/IEC 17025 and certified to ISO 9001