The SC450 for phosphate analysis from Orbeco-Hellige Inc. is a waterproof, handheld colorimeter that measures phosphate in two ranges. The SC450 Series of Single Parameter Colorimeters is a versatile line of instruments for water quality analysis. Able to test for a wide range of water quality parameters, these colorimeters are ideal for use in the field or laboratory. Orbeco-Hellige manufactures a full range of water quality instruments for testing over 100 parameters.