Overview
A gas chromatography autosampler automates the injection of liquid or gaseous samples into a gas chromatograph (GC), replacing manual syringe injections. It is widely used in laboratories for environmental testing, pharmaceuticals, petrochemicals, and food safety analysis. By standardizing injection volumes and timings, the device reduces variability and increases the reliability of analytical results. Modern autosamplers integrate with GC software for seamless workflow management, supporting high-throughput operations.
Structure and Working Principle
The autosampler consists of a sample tray, robotic syringe, needle, and a motorized arm. The tray holds vials in predefined positions, while the syringe aspirates a precise volume of sample and injects it into the GC inlet via a septum. Advanced models include features like temperature-controlled trays to preserve volatile samples and solvent wash stations to prevent carryover. The system operates via programmable methods, allowing unattended batch processing of hundreds of samples.
Key Features
Precision is paramount: high-end autosamplers achieve injection repeatability with coefficients of variation (CV) below 1%. Many support multiple injection modes (split/splitless, on-column) and adapt to different vial sizes (e.g., 2 mL to 20 mL). Modular designs allow upgrades, such as adding a headspace sampler for volatile organic compounds (VOCs). Compatibility with laboratory information management systems (LIMS) enables full traceability and compliance with regulatory standards like ISO 17025.
Application Areas
Environmental labs use autosamplers for analyzing water and air pollutants, such as pesticides or VOCs. In pharmaceuticals, they ensure consistent drug purity testing during R&D and quality control. The petrochemical industry relies on them for hydrocarbon analysis, while food safety applications include detecting contaminants like mycotoxins. Their versatility makes them indispensable in research and industrial settings requiring high-throughput GC analysis.
Maintenance and Precautions
Routine maintenance includes replacing septa and liners, cleaning the syringe, and checking for needle bends. Solvent compatibility must be verified to avoid damage to seals or tubing. Calibration should follow the manufacturer’s schedule, using certified reference materials. To prevent cross-contamination, implement wash cycles between samples and avoid overfilling vials. Regularly update firmware to ensure optimal performance.
B2B Procurement Guide
When selecting an autosampler, prioritize compatibility with your GC model and required injection volume range (e.g., 0.1–50 µL). Evaluate throughput needs—high-capacity trays (100+ vials) suit batch processing, while smaller trays may suffice for sporadic use. Consider after-sales support and availability of spare parts. Leading brands include Agilent, Shimadzu, and Thermo Fisher. Request demonstrations to assess ease of use and software integration. Prices vary by features; mid-range models typically cost $10,000–$15,000.
Related Manufacturers
- 主营：ICP-OES、原子吸收分光光度计、岛津LC-20A液相、安捷伦气相色谱仪、岛津气相色谱仪、安捷伦液相色谱仪、沃特世液相色谱仪、岛津液相色谱仪、安捷伦气质联用仪、岛津气质联用仪、安捷伦岛津液质联用仪、赛默飞离子色谱仪、赛默飞液相色谱仪、顶空进样器、安捷伦8860气相色、离子色谱仪、安捷伦1260高效、1260II液相色谱、安捷伦1260、ICS-600离子、ICS-5000
- 主营：高效液相色谱仪、超高效液相色谱仪、制备液相色谱仪、半制备液相色谱仪、液质联用仪
- 主营：二手紫外分光光度计、二手气质质、ICP-MS、二手液相色谱仪、二手气相色谱仪、二手离子色谱仪、二手液质联用仪、二手原子吸收光谱仪、二手顶空进样器、二手傅里叶红外光谱仪、赛默飞离子色谱仪、色谱仪租赁回收、二手岛津液相色谱仪、二手安捷伦液相色谱仪、二手气相、二手光谱仪、二手质谱仪、二手赛默飞离子色谱仪、二手液相色谱仪回收、二手气相色谱仪回收、ICP-OES、ICP、二手安捷伦液相、二手液相、二手液质质
- 主营：单人防护装备包、个人防护包、移动执法装备、红外夜视仪、热成像仪、油烟检测仪、VOC检测仪、qdf-6风速仪、在用车尾气分析仪、车用氮氧化物分析仪、OBD检测仪、FID检测仪、转子流速仪、红外气体泄漏检测仪、紫外线强度仪、移动执法包、水污染监测设备、便携式超声波明渠流量、恒流大气采样器、移动源执法设备、不透光烟度计、便携式水质自动采样器、水质快检试剂包、多普勒流量计
- 主营：油缸拆缸机、矿灯充电柜、机载临时支护装置、气相色谱仪、燃气分析仪、顶板离层仪、矿用平板车、皮带纠偏装置、岩心切割机、自动隔爆装置、液压起道机、钢轨锯轨机、钢轨打磨机、铁路捣固镐、缓冲条、防溢裙板、氢气发生器、钻孔应力计、矿用卡绳器、电缆挂钩、铁路道岔、托辊、扭矩放大器、固定式矿车
- 主营：采样罐、苏玛罐、大气采样器、便携式烟气分析仪、气体分析仪、ODS气体分析仪、预浓缩仪、傅里叶红外气体分析仪、温室气体分析仪、气体检漏仪、傅里叶红外烟气分析仪、有毒有害气体分析仪、烟气分析仪、配气仪、红外成像检测仪、红外成像热像仪、红外成像测温仪、非甲烷总烃分析仪、大气预浓缩仪、清罐仪、质谱联用仪、预浓缩系统、ODS监测设备、自动采样器
- 主营：单人防护装备、移动执法包、疾控卫生执法装备、职业卫生检测仪器、激光测距仪、手持式林格曼黑度仪、在用车尾气检测仪、通用车载诊断仪OBD、手持式光离子化检测仪、多参数气体检测仪、FID氢火焰检测仪、PID光离子检测仪、个人剂量报警仪、手持热电风速仪、移动执法箱个人防护箱、卫生健康行政执法装备、移动源执法监测设备、卫生监督执法装备、工业内窥镜、紫外线辐射强度计、辐射防护包、个人应急防护包、水质快检试剂包、机动车尾气检测设备、便携式不透光烟度计
- 主营：氙灯光源、光化学反应、多功能光纤、气相色谱仪、恒压进样仪、光化学反应仪、双层石英冷阱、光电反应釜、长弧氙灯、4A方斑、光热协同、光诱导合成、光化学反应釜、石英冷阱、微型反应釜、内照光化学反应器、升降台、多功能光纤光源、太阳光模拟器、光纤光源、模拟日光、LED光源、汞灯光源、微型反应系统、反应器
- 主营：单人防护装备、生态环境执法装备、移动执法包、氮氧化物分析仪、obd诊断仪、烟尘烟气测试仪、多普勒流速仪、水质多参数检测仪、cod检测仪、热电风速仪、不分光红外气体检测仪、粉尘仪、油烟检测仪、氢火焰离子检测仪、移动源执法设备、不透光烟度计、超声波明渠流量计、空气微生物采样器、照度计、大气环境采样器、恒流空气采样器、水质自动采样器、林格曼黑度计
- 主营：风量罩、环境监测、激光粉尘、测氧仪、voc检测仪、顶空分析仪、氨氮分析仪、油烟检测仪、水质检测仪、气体检测仪、烟气分析仪、toc分析仪器、水质测量仪、甲醛检测仪、油烟快检仪、汞蒸气检测仪、汞蒸汽检测仪、在线水质分析仪、手持式苯检测仪、大气采样器、皂膜流量计、水质采样器、气体采样器、明渠流量计、生物发光光度计
- 主营：生态环境综合执法装备、移动源执法监测设备、单人防护装备、PID光离子检测仪、氢火焰离子化检测仪、便携式恶臭检测仪、手持式林格曼黑度仪、便携式粉尘检测仪、红外热成像仪、管线探测仪定位仪、个人剂量报警仪、车用尿素检定仪、手持热电风速仪、OBD诊断仪、车用尾气分析仪、测距仪、多参数气体检测仪、多参数水质分析仪、水样采样设备、个人防护包、移动执法箱、水质快检试剂包、工业内窥镜、移动执法包、卫生监督快速检测设备
- 主营：个人防护包、移动执法包、水样采样设备、测距仪、个人剂量报警仪、多参数气体检测仪、水质检测仪、手持热电风速仪、通用车载诊断仪、便携式油烟检测仪、粉尘测定仪、便携林格曼黑度检测仪、手持式光离子化检测仪、便携式土壤重金属检测、移动源执法监测设备、生态环境保护执法设备、单人防护装备、职业卫生监督快检设备、应急防护包、移动执法箱、职业卫生监督执法设备、生态环境保护综合装备、水质快检试剂包、testo德图
- 主营：气相色谱仪、热解析仪、全自动顶空进样器、变压器油色谱仪、便携式气相色谱仪、高纯气体分析仪、在线色谱仪、智能实验室、氢空发生器
- 主营：矿用设备、铁路设备、救援装备、全返控气相色谱仪、防爆电器、路面机械、工程机械
- 主营：矿用设备、铁路设备、防爆电器、仪器仪表、路面机械、工程机械、智能制造