{"id":43873,"date":"2020-10-28T00:00:00","date_gmt":"2020-10-28T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/parker-pem-hydrogen-generators\/"},"modified":"2026-01-02T19:18:47","modified_gmt":"2026-01-02T19:18:47","slug":"parker-pem-hydrogen-generators","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/it\/articles-zh\/pcar3223\/parker-pem-hydrogen-generators","title":{"rendered":"Parker PEM Hydrogen Generators"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li>Economical, continuous source of ultra-pure hydrogen (99.9995%).<\/li>\n\n\n\n<li>Safe and easy to use and maintain.<\/li>\n\n\n\n<li>Hydrogen reduces gas costs, cuts analysis time by 50%, increases column lifetimes.<\/li>\n<\/ul>\n\n\n\n<p>If you use 2-3 cylinders of helium and\/or hydrogen per week, as carrier gas and\/or fuel gas, bottled gas is an expense in the range of $12,000 to $25,000 per year*, including overhead: expenses and time involved with ordering, transporting, installing, and periodically inspecting cylinders. You also contend with unquantifiable costs, such as floor space lost to an inventory of cylinders. Helium, widely used as carrier gas, is a non renewable resource extracted from natural gas and, because it is a petrochemical product, its cost will continue to rise, domestically and internationally. Chromatographers must look for cost-effective, ultra-pure gas alternatives to supply their instruments and state-of-the-art analytical columns. Fortunately, we do have options.<\/p>\n\n\n\n<p>Past practice in gas chromatography was to select either nitrogen or helium as the carrier gas. Hydrogen wasn\u2019t given much consideration, primarily because of flammability and storage issues, even though it offers several distinct advantages over nitrogen or helium. Now, Parker hydrogen generators offer a safe, reliable source of ultra-pure (99.9995%) hydrogen, and effective replacements for bottled gas. A Parker hydrogen generator stores less than 50mL of hydrogen (less than 0.002 cubic feet) at 1 atm., or 305 mL of hydrogen (0.01 cubic feet) at 6.1 atmospheres (90 psig.) From a safety standpoint there is no compromise, compared to a 300 cubic foot cylinder of hydrogen at 2500 psig.<\/p>\n\n\n\n<p>Parker hydrogen generators continuously produce dry, ultra-pure hydrogen by electrolytic dissociation of deionized water and hydrogen proton conduction across a membrane. The hydrogen product is dried by passing it through a coalescing filter, a drying tube, and a desiccant cartridge. Maximum output pressure, 90psig, is controlled to the point of use via a pressure adjust regulator. Other safety features include a pressure relief valve to prevent overpressurization and a mass leak sensor to indicate hydrogen demand is exceeding instrument capability, in which case the generator will shut down. A low water level and\/or poor quality water also will shut down the generator, to prevent damage to the electrolytic cell.<\/p>\n\n\n\n<p>Maintaining the generator is simple. Deionized water is all that is required for weeks of continuous operation. Simply change the filters every six months and the desicant cartridge when it changes from beige to clear.<\/p>\n\n\n\n<p>To evaluate performance, we set up a small Parker hydrogen generator (90mL\/min. maximum hydrogen output) to supply both carrier gas and fuel gas to an Agilent 6890 GC. We installed a 30 meter x 0.53 mm ID x 5 \u00b5m df Rtx-1 column (100% polydimethylsiloxane (PDMS) phase, cat.# 10179) in the oven and set analytical parameters as specified in a simulated distillation method, ASTM D-7096-05, but substituted hydrogen for helium as the carrier gas. We used a column flow rate of 40 mL\/min., in the constant flow mode, which represented the optimum linear velocity for hydrogen. The 40 mL\/min. carrier gas flow rate, plus a 40 mL\/min. flow of fuel gas, was 90% of the generator\u2019s maximum output capacity, and tested the generator\u2019s capability to meet volume demands.<\/p>\n\n\n\n<p>Figure 1 is a chromatogram of the calibration standard used for retention time-boiling point determination and response factor validation in the ASTM method. The components were well resolved and the analysis completed rapidly, in little more than 8 minutes. Reproducible retention times are vital to obtaining accurate initial boiling point (IBP) data. Table 1 shows retention times for the ASTM reference mix components were well-within the method specification of \u00b10.05 minutes per compound, demonstrating the hydrogen generator\u2019s ability to maintain a steady and precise flow of carrier gas. Figure 2 monitors FID baseline stability over 2 hours. These figures and data clearly show that a Parker hydrogen generator is a dependable source of ultra-high purity carrier and fuel gas for demanding GC applications.<\/p>\n\n\n\n<p>On average, yearly electricity and maintenance costs for operating a Parker hydrogen generator are approximately $350*. Offsetting the costs of purchasing and operating a generator with the savings made by not using gas cylinders indicates the generator will pay for itself in 1 to 2 years. With numbers like these, can you afford not to consider purchasing a Parker hydrogen generator for your laboratory?<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Table 1:<\/strong>&nbsp;Repeatable retention times for simulated distillation mix components confirm the hydrogen generator\u2019s steady and precise flow of carrier gas.<\/h5>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td rowspan=\"20\"><strong>Component<\/strong><\/td><td colspan=\"9\"><strong>Run Number \/ Retention Time (min.)<\/strong><\/td><\/tr><tr><td><strong>Mean<\/strong><\/td><td><strong>SD<\/strong><\/td><td><strong>%RSD<\/strong><\/td><td><strong>1<\/strong><\/td><td><strong>2<\/strong><\/td><td><strong>3<\/strong><\/td><td><strong>4<\/strong><\/td><td><strong>5<\/strong><\/td><td><strong>6<\/strong><\/td><\/tr><tr><td>&nbsp;&nbsp;1. ethanol<\/td><td>0.547<\/td><td>1E-03<\/td><td>0.1765<\/td><td>0.546<\/td><td>0.548<\/td><td>0.548<\/td><td>0.548<\/td><td>0.549<\/td><\/tr><tr><td>&nbsp;&nbsp;2. isopentane<\/td><td>0.67<\/td><td>1E-03<\/td><td>0.1484<\/td><td>0.669<\/td><td>0.67<\/td><td>0.671<\/td><td>0.67<\/td><td>0.672<\/td><\/tr><tr><td>&nbsp;&nbsp;3.&nbsp;<em>n<\/em>-pentane<\/td><td>0.779<\/td><td>0.001<\/td><td>0.169<\/td><td>0.777<\/td><td>0.779<\/td><td>0.78<\/td><td>0.779<\/td><td>0.781<\/td><\/tr><tr><td>&nbsp;&nbsp;4. 2-methylpentane<\/td><td>1.232<\/td><td>0.001<\/td><td>0.1198<\/td><td>1.229<\/td><td>1.231<\/td><td>1.233<\/td><td>1.232<\/td><td>1.234<\/td><\/tr><tr><td>&nbsp;&nbsp;5.&nbsp;<em>n<\/em>-hexane<\/td><td>1.488<\/td><td>0.001<\/td><td>0.0992<\/td><td>1.485<\/td><td>1.487<\/td><td>1.489<\/td><td>1.488<\/td><td>1.49<\/td><\/tr><tr><td>&nbsp;&nbsp;6. 2,4-dimethylpentane<\/td><td>1.753<\/td><td>0.001<\/td><td>0.0721<\/td><td>1.751<\/td><td>1.752<\/td><td>1.754<\/td><td>1.754<\/td><td>1.755<\/td><\/tr><tr><td>&nbsp;&nbsp;7.&nbsp;<em>n<\/em>-heptane<\/td><td>2.387<\/td><td>0.001<\/td><td>0.0442<\/td><td>2.385<\/td><td>2.386<\/td><td>2.388<\/td><td>2.387<\/td><td>2.388<\/td><\/tr><tr><td>&nbsp;&nbsp;8. toluene<\/td><td>2.904<\/td><td>0.001<\/td><td>0.0356<\/td><td>2.902<\/td><td>2.904<\/td><td>2.905<\/td><td>2.904<\/td><td>2.905<\/td><\/tr><tr><td>&nbsp;&nbsp;9.&nbsp;<em>n<\/em>-octane<\/td><td>3.266<\/td><td>7E-04<\/td><td>0.0214<\/td><td>3.264<\/td><td>3.265<\/td><td>3.266<\/td><td>3.266<\/td><td>3.266<\/td><\/tr><tr><td>10.&nbsp;<em>p<\/em>-xylene<\/td><td>3.784<\/td><td>7E-04<\/td><td>0.0195<\/td><td>3.783<\/td><td>3.784<\/td><td>3.785<\/td><td>3.784<\/td><td>3.784<\/td><\/tr><tr><td>11.&nbsp;<em>n<\/em>-propylbenzene<\/td><td>4.438<\/td><td>5E-04<\/td><td>0.0109<\/td><td>4.437<\/td><td>4.438<\/td><td>4.438<\/td><td>4.438<\/td><td>4.438<\/td><\/tr><tr><td>12.&nbsp;<em>n<\/em>-decane<\/td><td>4.809<\/td><td>4E-04<\/td><td>0.0088<\/td><td>4.809<\/td><td>4.809<\/td><td>4.809<\/td><td>4.809<\/td><td>4.809<\/td><\/tr><tr><td>13. butylbenzene<\/td><td>5.174<\/td><td>5E-04<\/td><td>0.0102<\/td><td>5.173<\/td><td>5.174<\/td><td>5.174<\/td><td>5.174<\/td><td>5.173<\/td><\/tr><tr><td>14.&nbsp;<em>n<\/em>-dodecane<\/td><td>6.116<\/td><td>5E-04<\/td><td>0.0079<\/td><td>6.116<\/td><td>6.116<\/td><td>6.116<\/td><td>6.116<\/td><td>6.116<\/td><\/tr><tr><td>15.&nbsp;<em>n<\/em>-tridecane<\/td><td>6.703<\/td><td>5E-04<\/td><td>0.0077<\/td><td>6.704<\/td><td>6.704<\/td><td>6.704<\/td><td>6.704<\/td><td>6.703<\/td><\/tr><tr><td>16.&nbsp;<em>n<\/em>-tetradecane<\/td><td>7.255<\/td><td>7E-04<\/td><td>0.0097<\/td><td>7.256<\/td><td>7.255<\/td><td>7.255<\/td><td>7.255<\/td><td>7.254<\/td><\/tr><tr><td>17.&nbsp;<em>n<\/em>-pentadecane<\/td><td>7.774<\/td><td>6E-04<\/td><td>0.0081<\/td><td>7.775<\/td><td>7.775<\/td><td>7.775<\/td><td>7.774<\/td><td>7.774<\/td><\/tr><tr><td>18.&nbsp;<em>n<\/em>-hexadecane<\/td><td>8.264<\/td><td>6E-04<\/td><td>0.0069<\/td><td>8.265<\/td><td>8.265<\/td><td>8.264<\/td><td>8.264<\/td><td>8.264<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Figure 1:<\/strong>&nbsp;A simulated distillation reference mix is well resolved, in 8 minutes, showing a Parker hydrogen generator can meet gas volume demands.<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image wide-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00852.png\" alt=\"Simulated Distillation on Rtx-1 (Hydrogen Carrier Gas)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> GC_PC00852<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Ethanol\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/64-17-5\/Ethanol\" target=\"_blank\" rel=\"noopener\">Ethanol<\/a><\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for iso-Pentane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/78-78-4\/iso-Pentane\" target=\"_blank\" rel=\"noopener\">iso-Pentane<\/a><\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Pentane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/109-66-0\/n-Pentane\" target=\"_blank\" rel=\"noopener\">n-Pentane<\/a><\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2-Methylpentane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/107-83-5\/2-Methylpentane\" target=\"_blank\" rel=\"noopener\">2-Methylpentane<\/a><\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Hexane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/110-54-3\/n-Hexane\" target=\"_blank\" rel=\"noopener\">n-Hexane<\/a><\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2,4-Dimethylpentane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/108-08-7\/2,4-Dimethylpentane\" target=\"_blank\" rel=\"noopener\">2,4-Dimethylpentane<\/a><\/td><\/tr>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Heptane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/142-82-5\/n-Heptane\" target=\"_blank\" rel=\"noopener\">n-Heptane<\/a><\/td><\/tr>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Toluene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/108-88-3\/Toluene\" target=\"_blank\" rel=\"noopener\">Toluene<\/a><\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Octane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/111-65-9\/n-Octane\" target=\"_blank\" rel=\"noopener\">n-Octane<\/a><\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for p-Xylene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/106-42-3\/p-Xylene\" target=\"_blank\" rel=\"noopener\">p-Xylene<\/a><\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Propylbenzene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/103-65-1\/n-Propylbenzene\" target=\"_blank\" rel=\"noopener\">n-Propylbenzene<\/a><\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Decane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/124-18-5\/n-Decane\" target=\"_blank\" rel=\"noopener\">n-Decane<\/a><\/td><\/tr>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Butylbenzene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/104-51-8\/Butylbenzene\" target=\"_blank\" rel=\"noopener\">Butylbenzene<\/a><\/td><\/tr>\n<tr><td class=\"num\">14.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Dodecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/112-40-3\/n-Dodecane\" target=\"_blank\" rel=\"noopener\">n-Dodecane<\/a><\/td><\/tr>\n<tr><td class=\"num\">15.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Tridecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/629-50-5\/n-Tridecane\" target=\"_blank\" rel=\"noopener\">n-Tridecane<\/a><\/td><\/tr>\n<tr><td class=\"num\">16.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Tetradecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/629-59-4\/n-Tetradecane\" target=\"_blank\" rel=\"noopener\">n-Tetradecane<\/a><\/td><\/tr>\n<tr><td class=\"num\">17.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Pentadecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/629-62-9\/n-Pentadecane\" target=\"_blank\" rel=\"noopener\">n-Pentadecane<\/a><\/td><\/tr>\n<tr><td class=\"num\">18.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Hexadecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/544-76-3\/n-Hexadecane\" target=\"_blank\" rel=\"noopener\">n-Hexadecane<\/a><\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Rtx-1, 30 m, 0.53 mm ID, 5.0 \u00b5m (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/10179?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_PC00852\" rel=\"noopener\">cat.# 10179<\/a>)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td>Custom paraffin mix, neat, 2.7-12.9% each component<\/td><\/tr>\n<tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Injection<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>0.1 \u00b5L splitless (hold 1  min)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Liner:<\/th><td>4 mm single taper inlet liner<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Temp.:<\/th><td>250 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\" colspan=\"2\">Oven<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Oven Temp.:<\/th><td>40 &#176;C (hold 1 min) to 265 &#176;C at 25 &#176;C\/min (hold 4 min)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Carrier Gas<\/th><td>H<sub>2<\/sub>, constant linear velocity<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Linear Velocity:<\/th><td>184 cm\/sec @ 40 \u00b0C<\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>FID @ 280 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Notes<\/th><td>Liner cat.# 20904 was used to produce this chromatogram, but has since been discontinued. For assistance choosing a replacement for this application, contact Restek Technical Service or your local Restek representative.<br \/>&#8211; &#8211; &#8211; &#8211; &#8211; &#8211;<br \/>Using Parker ChromGas hydrogen generator<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00852.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n\n\n<p><strong>Figure 2:<\/strong>&nbsp;Carrier gas from a Parker hydrogen generator assures a stable baseline, for sensitive analyses. Performance equivalent to cylinders, at lower cost.<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00853.png\" alt=\"FID Baseline Stability Using a Parker Hydrogen Generator\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> GC_PC00853<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-4 col-12\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\">Solvent<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for n-Tridecane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/629-50-5\/n-Tridecane\" target=\"_blank\" rel=\"noopener\">n-Tridecane<\/a><\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Rtx-1, 30 m, 0.53 mm ID, 5.00 \u00b5m (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/10179?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_PC00853\" rel=\"noopener\">cat.# 10179<\/a>)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td>Custom <em>n<\/em>-tridecane mix<\/td><\/tr><tr><td><\/td><\/td><\/tr>\n<tr><th class=\"sub conditions_header\" scope=\"row\">Diluent:<\/th><td>Methylene chloride<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Conc.:<\/th><td>1 \u00b5g\/mL<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Injection<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>0.1 \u00b5L splitless (hold 1  min)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Liner:<\/th><td>4 mm Splitless<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Temp.:<\/th><td>250 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\" colspan=\"2\">Oven<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Oven Temp.:<\/th><td>40 &#176;C (hold 120 min)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Carrier Gas<\/th><td>H<sub>2<\/sub>, constant flow<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Linear Velocity:<\/th><td>184 cm\/sec<\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>FID @ 280 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Notes<\/th><td>Liner cat.# 20904 was used to produce this chromatogram, but has since been discontinued. For assistance choosing a replacement for this application, contact Restek Technical Service or your local Restek representative.<br \/>&#8211; &#8211; &#8211; &#8211; &#8211; &#8211;<br \/>Carrier Gas: Parker hydrogen generator @ 40\u00b0 C. <br \/>Constant flow determined at 40\u00b0 C.<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00853.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">Footnote<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cost estimate for U.S., in U.S. $, 2021.<\/li>\n\n\n\n<li>** For for more information on ASTM-D-7096-05, visit our <a href=\"articles\/astm-petrochemical-method-chromatography-product-guide\/\">ASTM Petrochemical Method Chromatography Product Guide<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Relative to helium as the GC carrier gas, hydrogen from a gas generator reduces gas costs, cuts analysis time by 50%, and reduces temperatures needed for eluting analytes \u0097 which increases column lifetime. Parker ChromGas hydrogen generators are safe, convenient, reliable, and easy to use.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[786],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2408,2426,2420],"resource-technique":[2307],"ppma_author":[620],"class_list":["post-43873","post","type-post","status-publish","format-standard","hentry","category-articles-zh","product-library-gas-chromatography-products-zh","product-library-gas-purification-generators-zh","product-library-gc-columns-zh","resource-technique-gas-chromatography-gc-zh"],"acf":[],"taxonomy_info":{"category":[{"value":786,"label":"\u6587\u7ae0"}],"product-library":[{"value":2408,"label":"\u6c14\u76f8\u8272\u8c31\u76f8\u5173\u4ea7\u54c1"},{"value":2426,"label":"\u6c14\u4f53\u7eaf\u5316\u5668\u548c\u53d1\u751f\u5668"},{"value":2420,"label":"GC\u8272\u8c31\u67f1"}],"resource-technique":[{"value":2307,"label":"\u6c14\u76f8\u8272\u8c31\uff08GC\uff09"}]},"featured_image_src_large":false,"author_info":{"display_name":"Audrey Crater","author_link":"https:\/\/discover.restek.com\/it\/author\/audrey-craterrestek-com\/"},"comment_info":0,"category_info":[{"term_id":786,"name":"\u6587\u7ae0","slug":"articles-zh","term_group":0,"term_taxonomy_id":786,"taxonomy":"category","description":"","parent":0,"count":469,"filter":"raw","cat_ID":786,"category_count":469,"category_description":"","cat_name":"\u6587\u7ae0","category_nicename":"articles-zh","category_parent":0}],"tag_info":false,"authors":[{"term_id":620,"user_id":0,"is_guest":1,"slug":"barry-burger","display_name":"Barry Burger","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/43873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/comments?post=43873"}],"version-history":[{"count":4,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/43873\/revisions"}],"predecessor-version":[{"id":89483,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/43873\/revisions\/89483"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/media?parent=43873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/categories?post=43873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/tags?post=43873"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/industries-application?post=43873"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/post-badge?post=43873"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-type?post=43873"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/product-library?post=43873"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-technique?post=43873"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/ppma_author?post=43873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}