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Mahen Wijeratne

Chemistry Teacher
Male, 63 Years| COLOMBO, Sri Lanka

Member since: May 22, 2009

Last active on: Mar 12, 2010 at 08:05 AM (EST)

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Teaching Preferences

Online Teaching

Offers free trial classes

Teaches following Subjects/Exams
Chemistry (9th - 12th Grade)
Language of Instruction: English
Teaching Experience

Tutor

Private, Sri Lanka

Dec 2006 - Dec 2007

O/L Mathamatics and Biology

Trainer

Institute of fundamental Studies, Sri Lanka

Mar 1988 - Dec 1999

Handling Instruments and chemicals


I have trained technicians , reserach scientists, how to handle instruments such as GLC, HPLC, IR spec, Mass Spec and NMR spectrometers and on safety matters in handling laboratory chemicals.

Tutor

Private tutor, Sri Lanka

Jan 1969 - Jul 1984

Chemistry O/L and A/L


This teaching experience I achieved as a school leaver and continued after office hours when I was employed.

Chemistry And biology teacher

Kandy Aquinas Institute, Sri Lanka

Jan 1970 - Oct 1971

Chemistry and Biology GCE O/L students

Professional Experience
Quality manager
LAUGFS Eco Sri Pvt. Ltd., Sri Lanka
Dec 2007 - Jun 2009

a)In charge person for obtaining pattern approval by the MUSSD for company equipment which are used for emission testing.
b)In charge person for producing accurate results through timely calibrations of the equipment.
c)In charge person for implementation of a quality system for the company.
d)Conducting induction training on quality matters for new staff members.
.

Quality Manager
Bio Foods Pvt . Lt., Sri Lanka
Jan 2005 - Dec 2006

a) Responsible person for exporting good quality products as per customer specs.
b) Preparation of relevant documents for obtaining the ISO 9001-2000 -HACCP certification.
c) Laboratory in charge person for analysis and producing the Quality assurance certificate.
d) Handling external customer complaints and answering queries questionnaires on quality matters.
e) Conducting Training programs for employees on QMS, GMP and GHP.
f) Conducting internal audits a

Senior Laboratory Superintendent
Biotechnology Center of the Perdeniya University, Sri Lanka
May 2003 - Dec 2004

a. Operation and the maintenance of the equipment of the centre,
b. Procurement of equipment and lab ware requirements of the center.
c. Starting up a laboratory stores and maintaining it.
d. Starting up a master inventory and maintaining it.

Quality Control Manager
Haycarb pvt Ltd., Western Province, Sri Lanka
Jan 2000 - May 2003

a. I was the responsible person for the quality of Activated carbon products of the factory.
b. Continuous monitoring of the quality of carbon at every stage of the production.
c. Continuous monitoring of adherence to the ISO 9001 procedures during quality testing and taking part in the internal audit program of the company.
d. Collaboration with R & D Manager for ongoing research trials.
e. Collaboration with Badalgama and Karbokarn (Thailand) laboratories for the accuracy testi

Chemist
Meteorological and Environment Protection Administration Of the Kingdom of Saudi arabia, Saudi Arabia
Jul 1984 - Dec 1987

a. Operating and calibrating the ambient air monitoring equipment for SO2, NO, NOx, CO, O3, NH3, H2S, THC, Dust and noise level.
b. Making one mobile laboratory and three stationary labs in three cities operational and providing air quality data of above parameters.
c. Training and lecturing Saudi nationals in operating those equipment.

NMR Technician
Chemistry Department of Peradeniya Unversity of Sri Lanka, Sri Lanka
Dec 1981 - Jul 1984

a.Providing NMR spectral Data for the PhD and MSc students of the department.
b.Providing NMR spectral Data for the PhD and MSc students of the other universities, as this was the only NMR available for Sri Lanka at the time.

Technical Assistant
Coconut Research Institute of Sri lanka, Sri Lanka
Oct 1973 - Dec 1981

a.Macro nutrient analysis of the coconut plant materials using AAS, Flame photometer and Kdhjeldhal system.
b. Alcohol, sugars, acids, and esters estimation in coconut sap and it’s derivatives using GLC, and other gravimetric methods.
c.Helping in carrying out fermentation trials (Isolation of yeast strains and selection of good alcohol yielding strains) on coconut sap.
d. Amino Acid estimation in coconut plant material using paper chromatography. .
e. Conducting demonstration f

Technical Assistant
Tea Reserach Institute , Talawakelle, Sri Lanka
Oct 1971 - Oct 1973

Worked for Physiology Department as atechnical assistant and learnt techniques od quantifying Carbohydrate resources found in tea plant material.

Education

M.Phil Degree in Food Science

University of Greenwich, United Kingdom

Jan 1996 - Jan 1998


Formation, and destruction of Poly Cyclic Aromatic Hydrocarbons Of Sri lankan coconut products

2. BSc degree in Bio Science

, Sri Lanka

Jan 1977 - Jul 1981


Subjects offered are
Chemistry
Zoology
Botany

Professional Exams & Certifications

Diploma in Industrial safety

Chennai, India

Year Of Passing: 2009

Diploma in Internal Quality Auditing & QS 9000/ISO 9000

Chennai, India

Year Of Passing: 2008

Master of Philosophy

United Kingdom

Year Of Passing: 1998

Bachelor Of Science

Sri Lanka

Year Of Passing: 1981

Laboratory Technician's Training Certificate Of Institute of Chemistry Sri Lanka

Sri Lanka

Year Of Passing: 1975

Laboratory Technician's training course

Institute Of Chemistry Sri Lanka, Sri Lanka

Year Of Passing: 1975


Offered subjects are
Analytical chemistry (major subject)
Medicinal Chemistry
Organic Chemistry
laboratory practice
Electronics
Microbiology
Statistics
Glass blowing

Obtained a distinction in the major subject and overall honours pass in the entire course

GCE A/L Examination

Sri Lanka

Year Of Passing: 1971

GCE O/L Examination

Sri Lanka

Year Of Passing: 1966

Associations & Membership
Sri Lanka association for the Advancement of Science
Western Province, Sri Lanka
Sep 1995 - Dec 2010

i am a life member of this association.

I have presented several research papers during annual sessions.

Institute Of Chemistry Sri lanka
Sri Lanka
Sep 1995 - Dec 2009

I am a life member of this association.

Have presented 3 reserach papers in 1997

Biofoods Well fare Association
Sri Lanka
Jan 2005 - Dec 2006

I was the President of the Association from October 2005 to December 2005.

Institute Of Fundamental studies Wellfare association
Sri Lanka
Feb 1994 - Dec 1999

I was the founder secretary of this association from February 1994 to March 1997

Tea Research Institute Recreation Club
Sri Lanka
Oct 1971 - Oct 1973

I held the office of Sports secretary of the above association from May 1972 to May 1973

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