... 255mm Weight: 24Kg XRF Gold Tester(Portable, Model: SQ-2000) XRF gold tester. SQ industry has contributed Gold Tester to Jewelry society ... China and Asia have enjoyed the reliable performance of SQ Gold Tester. SQ-2000 adopts low power X-ray tube, ... samples could be destructed by measurement.Wide determination range: All Gold, Platinum, Silver and Palladium alloy could be analyzed.Rapid determination ...