Myron L Company has two proven ways to measure such impurities. DS Meters provide fast accurate on-the-spot measurement of total dissolved solids (TDS or conductivity. pDS Metes test conductivity or TDS plus pH. Readings from their highly stable circuitry help prevent equipment damage assure product quality and verify in-line instrumentation in a wide range of applications. And press the rubber button ppm/TDS is immediately indicated on the color-coded scale.

select DISTINCTROW top 20 p.CatalogId,p.ccode from products p, prodcategories cc, categories c where cc.intCatalogId=p.CatalogId and cc.intcategoryid=c.categoryid and cc.intcategoryid = 269 and p.hide = 0 and (p.customermatch is null or p.customermatch = '') and (p.loggedin = false or p.loggedin is null) and (c.customermatch is null or c.customermatch = '') and (c.loggedin = false or c.loggedin is null) AND (higherCatalogId is null) order by p.ccode