Linearity Check Mix ASTM D-5134 Back Catalog number: 51121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended TCDT-83 2,3,7,8-Tetrachlorodibenzothiophene, 1.2ml x 50ug/ml, toluene Price on request 676230 Parathion-ethyl, 100 µg/ml, Cyclohexane, 1ml Price on request 672875 Nitrofurazone, 250mg Price on request