QuanTtest Red Protein Standards, Level 2, 3, 4, and 5, 4x30 Ml (3410-02)Pyrogallol Red Molybdate dye binding method provides a simple, ready to use colorimetric method for total protein quantitation with greater linearity, using microliter samples of urine or cerebrospinal fluid in manual or automated systems. The kit consists of reagent, controls for both CSF and urine chemistry, and four reagent standards: level 2 level 3 level 4 and level 5 .