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    Standard gases for the petrochemical industry

    石油化工产品的检验分析、生产过程工艺控制是确保产品质量的*重要环节。从原材料到产......

  • Standard gas for exhaust gas detection of motor vehicles
    Standard gas for exhaust gas detection of motor vehicles

    机动车尾气检测零点气组分浓度杂质压力不确定度充装精度O220.8%THC<1×1......

  • Standard gases for high-purity gas analysis
    Standard gases for high-purity gas analysis

    标准物质组分浓度范围μmol·mol-1不确定度压力备注氦中杂质测定氢1.00-......

  • Gas reference materials for earthquake monitoring
    Gas reference materials for earthquake monitoring

    标准物质组分典型量值不确定度充装精度压力地震监测用气体标准物质氦1.00%0.1......


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