Varian 1200L LC/MS GC/MS - Agilent Technologies
Varian 1200L LC/MS GC/MS - Agilent Technologies
Varian 1200L LC/MS GC/MS - Agilent Technologies
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Gas Requirements 1200 <strong>GC</strong>/<strong>MS</strong>CI Reagent GasesThe CI mode for the 1200 <strong>MS</strong> typically uses methane, isobutane, or ammonia. The amount ofgas consumed during CI operation is approximately 1 to 2 mL/min. The CI reagent gas shouldcontain less than 1 ppm water. The methane, isobutane, or ammonia gas supply line connectsdirectly to the CI gas inlet using 1/8-inch Swagelok® fittings.Before evacuation, new gas lines typically contain significant amounts of adsorbed water vapor.The longer the gas line, the greater the pumping time required to evacuate the water from theline. To minimize pumping time, we recommend that the line be as short as possible.Methane 5.0 Research Grade (99.999% purity)A two-stage, 0−15 psi (0−1 bar) pressure regulator that has a stainless steel diaphragm isrecommended. The output pressure to the 1200 <strong>MS</strong> should be set to 3−5 psi (0.2−0.3 bar). Gaslines for methane should be made of stainless steel. All gas lines should be free of oil andpreferably flame treated or solvent washed.Isobutane 5.0 Research Grade (99.999% purity)A two-stage, 0−15 psi (0−1 bar) pressure regulator that has a stainless steel diaphragm isrecommended. The output pressure to the 1200 <strong>MS</strong> should be set to 3−5 psi (0.2−0.3 bar). Gaslines for isobutane should be made of stainless steel. All gas lines should be free of oil andpreferably flame treated or solvent washed.Ammonia 5.0 Research Grade (99.999% purity)A two-stage, 0−15 psi (0−1 bar) pressure regulator that has a stainless steel diaphragm isrecommended. The output pressure to the 1200 <strong>MS</strong> should be set to 3−5 psi (0.2−0.3 bar). Gaslines for ammonia should be made of stainless steel. All gas lines should be free of oil andpreferably flame treated or solvent washed.Ammonia, Anhydrous (CAS Number 7664-41-7)Anhydrous Ammonia gas is highly toxic. Inhalation may cause irritation to eyes andthroat and may cause pulmonary edema, which can result in serious injury or death.Repeated exposure to Anhydrous Ammonia may cause permanent lung damage.• Refer to Material Safety Data Sheet (<strong>MS</strong>DS) for Anhydrous Ammonia forexposure control/personal protection, handling/storage, accidental release, firstaid, and fire fighting measure requirements.• Anhydrous Ammonia should only be used in conjunction with an appropriateventilation system for the instrument, the exhaust from the foreline pump, andthe gas cylinder. Use appropriate safety shutoff valves for the AnhydrousAmmonia supply and interconnecting lines.The operator is responsible for determining and implementing appropriate precautionswhen using Anhydrous Ammonia and for compliance with all governmental regulations.It is the operator's responsibility to understand and adhere to all safe laboratorypractices concerning the use of toxic gases, including Anhydrous Ammonia.03-914961-00:6 5 of 24 1200/<strong>1200L</strong> <strong>MS</strong> Pre-installation Instructions