Johnson Johnson Iron Test Strip, 248.1, J-Quant, 0 to 500 mg/L, 100 Strips/Pack The J-Quant Iron 500 test strips can determine if a metal is ferrous or non-ferrous. They can measure the amount of iron on metal surfaces and in aqueous solutions. A rapid and reliable measurement... Quick view Qty in Cart: 0 Price: Log in for pricing and quote Subtotal: