Inquiry (采购产品): part name I am looking for the knob that controls the flow of Nitrogen through the needle/pipette into the sample. **** Hidden Message ***** Sonya Palmer 11720 Northcreek Pkwy North Suite 400 Bothell, WA 98011 USA Company: TestAmerica Seattle Title: Organic Operations Manager Phone: 425-420-9200 Fax: 425-420-9210 E-mail: sonya.palmer@testamericainc.com **** Hidden Message ***** sonya.palmer@testamericainc.com