0.020 N Sodium Hydroxide Back Catalog number: 50297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4042-015-10CY Mass Discrimination Test Mixture for ASTM D 5739 150 µg/mL in pesticide grade cyclohexane, 10mL Naphthalene 99 % Fluoranthene 99 % Benzo[ghi]perylene 99 % Price on request X9056 4,4’-DDT Price on request ACQ-SE03-030 Ethanol standard in serum,0.3g/L,serum, 3mL Price on request