PMID- 7658360 OWN - NLM STAT- MEDLINE DCOM- 19951002 LR - 20190711 IS - 0022-3549 (Print) IS - 0022-3549 (Linking) VI - 84 IP - 5 DP - 1995 May TI - Interlaboratory comparison of analytical methods for residual ethylene oxide at low concentration levels in medical device materials. PG - 647-55 AB - An interlaboratory comparison of two extraction methods and one thermal desorption test method for the quantification of ethylene oxide (EO) by gas chromatography in two common medical device materials, high density polyethylene (HDPE) and plasticized polyvinyl chloride (PVC), was conducted by 15 laboratories. The three procedures included extraction with water, extraction with acetone, and headspace gas analysis, respectively. Materials were processed through an industrial EO cycle and aerated for various periods to achieve target levels of a low (5 micrograms/g), medium (10 micrograms/g), and high (25 micrograms/g) residual determination following extraction or thermal desorption. The results of this study, using only the data from the laboratories that did not deviate from the procedure, showed that the average estimated total coefficient of variation ranged from 3.63 to 12.42% for the three different methods. Each of the methods is suitable for use as a reference test method for determining residual EO in polymeric materials in the concentration range 2.8-42.3 micrograms/g. FAU - Lao, N T AU - Lao NT AD - U.S. Food and Drug Administration, Center for Devices and Radiological Health, Office of Science and Technology, Rockville, MD 20852, USA. FAU - Lu, H T AU - Lu HT FAU - Rego, A AU - Rego A FAU - Kosakowski, R H AU - Kosakowski RH FAU - Burgess, D J AU - Burgess DJ FAU - Hume, R D AU - Hume RD LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - J Pharm Sci JT - Journal of pharmaceutical sciences JID - 2985195R RN - 0 (Polyethylenes) RN - 059QF0KO0R (Water) RN - 1364PS73AF (Acetone) RN - 9002-86-2 (Polyvinyl Chloride) RN - JJH7GNN18P (Ethylene Oxide) SB - IM MH - Acetone MH - Chromatography, Gas/*methods MH - Equipment Safety MH - Equipment and Supplies/*standards MH - Ethylene Oxide/*analysis MH - Polyethylenes/chemistry MH - Polyvinyl Chloride/chemistry MH - Sterilization/*standards MH - Water EDAT- 1995/05/01 00:00 MHDA- 1995/05/01 00:01 CRDT- 1995/05/01 00:00 PHST- 1995/05/01 00:00 [pubmed] PHST- 1995/05/01 00:01 [medline] PHST- 1995/05/01 00:00 [entrez] AID - S0022-3549(15)49795-3 [pii] AID - 10.1002/jps.2600840524 [doi] PST - ppublish SO - J Pharm Sci. 1995 May;84(5):647-55. doi: 10.1002/jps.2600840524.