New Accredited Test Methods
We have recently added new test methods in our scope of accreditation. These includes;
1. TM-ETO-1 (Based on ISO 10993-7 (2008) guideline for ethylene oxide (EtO), ethylene chlorohydrin(ECH) and ethylene glycol (EG) on sterilized medical devices.
2. TM-ETO-2 (Based on ISO 10993-7 (2008) guideline on aqueous solution for ethylene oxide (EtO) only.
3. TM-ECHnEG-1) based on ISO 10993-7 (2008) guideline on aqueous solution for ECH and EG.
4. TM-SOLVENT-1 on relative percent purity for non-halogenated organics, residual solvents and hydrocarbons containing 5-12 carbons.
5. TM-SOLVENT-2 on relative percent purity of gas for ethylene oxide gas.
6. TM-ANION-2 based on MS 2509:2012 for Nitrite and Nitrate in bird nests (ion chromatograhic method)
7. TM-ANION-1 for ion chromatographic analysis of water for the following anions ; fluride, chloride, bromide, nitrate, nitrite, sulphate and phosphate.
8.TM-HALAL-1 for determination of Ethanol content in food and drinks.
9.MB-STERIL-1 based on ISO 11737-2:2009 on sterility test for medical devices by direct immersion.
10. MB-STERIL-3 based on ISO 11737-2:2009 on sterity test for medical devices by membrane filtration method.
11. MB-STERIL-2 based on ISO 11138-1:2006 on sterility test for biological indicators.
12. MS ISO 9308-1:2011 for Enumeration of E-Coli and Coliform Bacteria in drinking water, mineral water and potable water.
Edible Bird Nest Testing
High level of nitrate and nitrite were found in edible bird nest produced in Malaysia which are manly exported to China. Recent regulation to set the allowable limit on edible bird nest exported to China at 30 ppm requires that samples of these bird nest need to be tested for levels of nitrate and Nitrite. We are offering analysis of nitrate and nitrite in bird nest using ion chromatography. For more information ...
Ethylene Oxide Residual Analysis in Medical Devices.
During the sterilization process, ethylene oxide gas will dissolve into the polymer materials and depending on the type of polymer material, the degassing process may be quite slow. Furthermore, the reactive ETO gas will readily react with any available chlorine ions to form a more toxic and much less volatile ethylene chlorohydrine (ECH). ETO gas will also react with traces of acid in the product to form relatively less toxic ethylene glycol (EG).
Thus the analysis of ethylene oxide residues involves total extraction and GC analysis of ETO as well as ECH and sometime also EG. more....
Hydrocarbon contamination either in food or in the environment may be determined by several method. The simplest method is the oil and grease (O&G) analysis which involve solvent extraction and gravimetric determination which give information on the total extractable organic compounds. Extention of this method involves treating the extract with silica (USEPA method 1664A) which provide further information on polar and non-polar fractions of the extract. Total petroleum hydrocarbon (TPH) is essentially the non-polar fraction which may be further refined into aliphatic and aromatic hydrocaron fractions through chromatographic separation followed by gravimetric analysis or quantitative IR determination. For determination of low level hydrocarbons, gas chromatography with FID or MS detectors is used.
Specific hydrocarbon fractions such as diesel range organic (DRO), gasolein range organic (GRO), polynuclear aromatic hydrocarbons (PAH) and benzene-toluene-ethylbenzene-xylenes (BTEX) may be determined by GC-FID or GC-MS using appropriate standards. more...