National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ CALIBRATION AND QUALITY CONTRO L: 8. Calibrate daily with at least six working standards over the range from below the LOD to 10 times the LOQ. If necessary, additional standards may be added to extend the calibration curve. a. Add known amounts of isopropyl acetate to solvent in 10-mL volumetric flasks and dilute to the mark. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Determine desorption efficiency (DE) at least once per year for each lot of charcoal used for sampling in the calibration range (step 8) . Prepare three tubes at each of five concentrations plus three media blanks. NIOSH Manual of Analytical Methods (NMAM) , Fourth Edition ISOPROPYL ACETATE: METHOD 1460, Issue 1, dated 15 March 2003 - Page 3 of 3 a. Rem ove and disca rd back sorbent sec tion of a med ia blank sam pler. b. Inject a known amount of isopropyl acetate or of a standard solution of isopropyl acetate in solvent directly onto front sorbent section with a microliter syringe. c. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Plac e the front (and glass woo l) and bac k sorbe nt sections of the sam pler tub e in se para te vials. Discard the foam plugs. 6. Add 1.0 mL CS 2 / metha nol (99:1) to eac h co ntaine r and cap tightly. 7. Allow to stand 30 min with occasional agitation. ”
