gc model is Agilent 5890A, Shimadzu gc 8A, operation smoothly, i can test samples on them, FID detector, change 4 times of spray tube of the detector, but the sensitive maybe not as good as Agilent 7890, or Shimadzu 2010gc, but they are still stable and enough for testing my sample. that is inportant, i always buy columns from Tegent Guangzhou office, the quality is very good and stable. the sales guy is very smart and inteligent, he will send any promotion plan of their products to me and each time i will buy one or two columns with the promotion price. i feel very happy with their service and high quality products.

原来在学校用岛津2010A，呵呵当时是新买的，到现在也才两年的时间，本来还有一个2010 买的早一些，感觉仪器的灵敏度和检测性能并没有降低，关键是柱子的使用，由于大量做实际样品，所以污染消耗的比较严重；现在工作了单位的气相还是岛津的不过变成了14C，呵呵，就是要手动进样，但是一般的业务分析灵敏度也完全能满足，仪器用了有3年了，听说刚买来时仪器控制面板就有些问题，但是一直手动进样，影响也不太大，以为不是啥仪器的问题，结果最近装了自动进样器，结果和原有的工作站控制软件总不兼容，导致自动进样无法使用。唉，不禁感慨一分钱一分货！