Model No. NSTO - HS - 011 is manufactured by Kyushu Chemical Technology Research Firm. It is mainly used to test oil on plate surface.
Model No.CARY100 is made by Varian Manufacturing Co., ltd. It used to test ion content in solution with wavelength coverage 190~900 nm.
Model No. STANNOMetal 9000 is manufactuer is Quality by Vision LTD company.
It’s used to measure the amount of tin in tinplate and tin alloy. Test Range 0.2-20g/m2.