Dr. KS Leung was the first speaker and his topic entitled "Chemical Testing for Compliance Considerations". Dr. Leung explained the purposes of testing included investigation, compliance and evidence in legal proceedings and arbitrations.
Dr. Leung mentioned the study of comparability and traceability of chemical measurements to ensure reliability of test results. He also discussed factors for consideration to interpret of food testing results included test methodology, nature of analyte, food categorization and other factors (e.g. baseline data). Finally, two case studies were discussed that one was Sorbic acid found in steamed barbecue pork bun and the other was Formaldehyde in fish.
The second speaker was Dr. Steven SL Yang (Electronic Engineer, SCL) and his presentation named "Photometric and Radiometric Calibration Services at the HKSARG Standards and Calibration Laboratory (SCL)". Dr. Yang explained why photometry and radiometry were important; and then he introduced the photo biological safety requirement based on IEC 62471 for lamps & lamp systems.
Then he compared different efficiency and lighting power among Incandescent, CFL, LED and Lumens. The SI based unit of luminous intensity (Candela) was briefed. Lastly, he introduced SCL Photometric Calibration Service on illuminance which calibrated by illuminance meters from 1 lx to 3000 lx at 2856K color temperation and its expanded uncertainty was 1.5%; and the other on Luminous Intensity which calibrated by standard lamps from 35 cd to 3500 cd with expanded uncertainty of 1.3%.
The third speaker was Dr. Kenneth WL Kam (Co-founder, Groken Bioscience, HK) and his presentation title was "The Challenges and Approaches to Assuring the Quality of Next Generation Sequencing (NGS) Based Testing – The Role of Hong Kong". Dr. Kam said next generation sequencing (NGS) as a game changer. High throughput of sequence analysis of large region of DNA massive parallel sequencing of DNA fragment would be realized.
Then Dr. Kam briefed the testing process from Sample Preparation to Library Preparation those under Wet Lab, then from Sequence Generation, Sequence Analysis to Result Reporting which were under digital data analysis-Bioinformatics. Bioinformatics Analysis was separated into primary, secondary and tertiary. After that he explained their test development and validation as well as quality management. One of their challenges was common standards not fully established. He expected the role of Hong Kong to be proficiency testing provider and established reference materials.
The fourth speaker was Dr. Li-Ya Xia (Associate Professor, College of Quality & Technical Supervision, Hebei University, China) and her topic named "The Study on Identification Technology and Operation Standard of Geographical Indication Products". Dr. Xia introduced Hebei University and what was Geographical Indications (GIs) on rice.
GIs are to identify a good as originating in the territory of a [WTO] Member or locality in that territory, where a given quality, reputation, or other characteristic of the good is essentially attributable to its geographical origin. Different GIs logos were shown in the following diagram. The technology of determining the geographic origin of GIs included Isotope Ratios, Elements Fingerprints, Near IR spectroscopy, Organic and Anions Fingerprints. The statistical techniques were used such as PCA, Linear Discriminant Analysis (LDA), Cluster Analysis, etc.
The fifth speaker was Dr. Edward SI Liu (Education Director, The Gemmological Association of Hong Kong) and his presentation entitled "The Standard Methods for Testing Fei Cui for Hong Kong: Key Discussions and Observation of the T&C Issues". Dr. Liu mentioned the standard methods for testing Fei Cui was developed by the Gemmological Association of Hong Kong in 2003 to identify and verify diamond and fei cui. Then they established accreditation for gem testing laboratories in 2005.
Dr. Liu said Jade could be separated into Jadeite and Nephrite according to their hardness. However, Jadeite is not necessary equal to Fei Cui. The following diagram showed different Fei Cui raman spectra. Lastly, Dr. Liu concluded Jadeite Jade was widely understood both by the fei cui industry and consumers but they might still not familiar with Omphacite and Kosmochlor.
The sixth speaker was Prof. Xue-Zhen Wu (Associate Professor, Department of Automation Engineering, Guangxi Hydraulic and Electric Polytechnic) and her talk named "Certification System for Automation Engineer". Prof. Wu introduced the Automation System Engineer (ASE) background and ASE Accreditation requirement to us.
During the lunch, we took a photo for memory.
(Left: Mr. MK Kwok (Accreditation Officer, HKAS), I, Dr. Edward SI Liu, Ms. Fanny Tang (Lecturer, OUHK), Mr. Deng-Ming Ke, Mr. SL Mak (Lecturer, OUHK), Dr. George HK Lau (Asso. Professor & Programme Leader (Testing & Certification), OUHK), and OUHK colleague)
The seventh speaker was Mr. Deng-Ming Ke (Supervisor, Chemical Division, Shenzhen Academy of Metrology and Quality Inspection) and his presentation topic was “Introduction of China Compulsory Certification (CCC) for Toys”. Firstly, Mr. Ke introduced China Compulsory Certification which aimed to protect Chinese consumers and its requirements.
Before 2003, there were two systems for product safety certification. After 1st Aug 2003, it integrated into one CCC system for WTO. Then Mr. Ke briefed six types of toys under CCC requirement.
I (Manager of Quality System, HKSTPC) was the eighth speaker and my talk named “Measurement Traceability of Advanced Microscopy under HOKLAS Scheme”. Firstly, I introduced different types of laboratories in Science Park and our accredited laboratories under Technology Support Centre.
Then I briefed the techniques of Scanning Electron and Acoustic Microscopy which we applied for HOKLAS accreditation. The traceability of reference standards and uncertainty models were also discussed.
After presentation, I received a souvenir from Dr. George HK Lau.
Dr. Xue-Ping Chen (CTO, Vitargent (International) Biotechnology Limited) was the ninth speaker and her presentation entitled “The Beauty of Applying Biotests to Food Safety Monitoring”. Dr. Chen explained the importance of Biotest because unanticipated toxiacants usually went undetected and effective toxicity was not able to be calculated reliably. Then Dr. Chen shared several examples such as Estrogens, and Edible oil.
The preliminary result of edible oil test between good and bad quality oils was discussed. Finally, Dr. Chen said Biotest used for certification mark could help industry identify problems and improving product safety so as to distinguish good products from others.
The tenth speaker was Mr. Yan-Bing Chai (General Manager, Quality Management Centre, The Shijiazhuang Junlebao Dairy Co., Ltd.) and his topic was “Immunomodulatory Effects of Lactobacillus casei N1115”. Mr. Chai introduced their product included probiotics N1115 which would enhance immune system through balance in our intestine. Moreover, mice test was performed for safety.
One of interested test was selected 20 staff for faeces test included color and hardness.
The color outcome could be verified through another research below.
(The stool’s color is mainly from bilirubin, a reddish-yellow bile pigment produced in the liver from the hemoglobin contained in old red blood cells. Bilirubin’s color varies with acidity.
Acidic environment: Yellow
Neutral environment: Orange to brown
Alkaline environment: Greenish- or Blackish-brown.
Refer to Yoshio Aso (1997) “Lactic Acid Bacteria and Cancer Prevention” Shufunotomo)
The eleventh speaker was Ms. Rebecca Wong Wan-ha (Accreditation Officer, HKAS) and her presentation named “Greenhouse Gas Validation and Verification”. She introduced Greenhous Gas (GHG) quantification through the following international standards.
ISO 14046-1 – for organization (GHGs covered CO2, CH4, N2O, HFCs, PFCs and SF6)
ISO 14046-2 for GHG emission reduction/removal enhancement project
ISO 14065 – requirements for GHG validation / verification body
ISO 14066 – competence requirements for GHG validation / verification team
ISO/TS 14067 – for product carbon footprint
Dr. George HK Lau (Asso. Professor & Programme Leader (Testing & Certification), School of Science and Technology, OUHK) was the last speaker and his topic was "Profile of the Testing and Certification Industry in Hong Kong". Dr. Lau introduced the history of the formation of HKCTC and T&C industry in Hong Kong.
From the statistic data from 2009 to 2012, T&C service section had better value added compared with others. Dr. Lau concluded that China had created both opportunities and challenges for the local T&C industry and Hong Kong had an excellent reputation in high integrity of practitioners which was the core element for the T&C industry.
OUHK TCC2014 - http://tc.ouhk.edu.hk/news/testing-and-certification-conference-2014/