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azeliza s blog about my passion through chemistry home who s el rss azeliza s blog about my passion through chemistry hey there thanks for dropping by azeliza s blog take a look around and grab the rss feed to stay updated see you around greeting uncategorized latest entries intro of my final report filed under uncategorized leave a comment october 11 2010 raw material types of raw materials or samples received are heavy metal fresh fish salted bilis powder rice vermicelli ice cream cutter fish canned food additive fresh fruits longan lynches delima coconut dried fruits preserver sweetener without nutrient rice vermicelli powder instant noddle fresh fish noodle pesticide fresh vegetables cabbage baby corn kalian salad groundnut fruits papaya banana longan apple orange pear imported and local herbs microbiology processed food canned food cooked foods food poisoning sample swab receiving of raw materials raw materials are received from the customers usually by authority officer according to the procedure in food act and regulation 1985 which means health inspector all the raw materials are received at the sample receiving counter the analyst is responsible to receive the materials the materials are then delivered to the laboratory with least practicable delay the request for analysis of food samples is made in request form all samples received by the laboratory is registered and given the laboratory number registration of samples can be made by individual sample or by batch of samples and to be recorded in the samples custodium form the analyst will identify and label the raw materials with laboratory number the laboratory number sample reference number and date received are recorded by the analyst in the logbook or sample receiving record the raw materials together with the form are sent to sub sampling area or to respective unit in situation where sample are received by analyst that do not perform the test the sample is then handling over to specific analyst and this is recorded sub sampling sub sampling should be done accordingly to each sample type this is obtained a representative portion for each type of analysis to determine the level of residues and contaminants analyst will do the sample sub sampling of the raw materials and store the raw material accordingly as some raw material need a sub sampling before analysis before analysis done the raw materials package or container is labeled before storage the label consists of laboratory number raw material name receiving date and storage identification analysts are responsible to check the sample and determine the type of analysis to be conducted for each sample analyst must identify the sample type to determine the procedure for sample preparation before analysis because each type of food needs different ways of preparation the sub sampling is divided into microbiology and chemical analysis 1 microbiology analysis for microbiology analysis the whole sample will be used in analysis the quality of samples to be taken is determined by the analysis method the preparation of sample and first dilution are carried out as described in the relevant method of microbiology analysis australia standard and part 3 section 1 preparation of food homogenate and dilution in mmef preparation of further dilution refer to as 1766 1 2 1991 2 chemical analysis frequently the sample received is in larger size than is required for laboratory sample it should be divided to provide representative portion the size of analytical portion is determined by analytical method so the sample portion must be kept enough for replicate and confirmatory analysis as required for sample that requested for different type analysis the portion should be kept separately for each analysis each sample portion should be placed in a clean chemically inert container and sealed to avoid any contamination each sample must be correctly identified by record and labeled accordingly by the respective analyst before storage storage all raw materials will be stored in the sample storage area fresh materials are kept in the chiller or freezer while un fresh materials are kept at room temperature the analyst should store the sample accordingly to the type of sample before and after sub sampling so that it will not affect the level of residues and contaminants this storage technique is suitable for chemical analysis method only occasionally the microbiology sample will be proceed with the analysis as soon as it received but sometimes there is unexpected event occur and the analyst have to store it for awhile storage of microbiology sample must be stored accordingly as below 1 before analysis a frozen sample or deep frozen sample this sample will be kept in chiller for thawing process with temperature between 0 4 c overnight less than 24hours if the thawing period is not enough it can be prolonged for about 15 minutes at 45 c b fresh sample this sample temperature must be maintained between 0 4 c in refrigerator before analysis c un fresh sample or shelf stable packaged products or dry food this sample can be stored at room temperature before analysis d canned food or process food for good condition canned food directly incubate at 30 c for 14 days whereas for bad condition canned food can be stored at refrigerator 0 4 c before analysis 2 during analysis prepared sample can be temporarily stored in refrigerator at 0 4 c less than 18hours and cannot be exposed to room temperature for more than 15 minutes 3 after analysis the retained sample should be packed in another sterile packaging or container and tightly sealed the stored condition of retained sample according to their types as follows a frozen sample or deep frozen sample the retained sample must be kept in freezer at 18 c to 20 c e fresh sample this sample temperature must be maintained between 0 4 c f un fresh sample or shelf stable packaged products or dry food this sample can be stored in store cabinet at room temperature g canned food or process food this sample temperature must be maintained between 0 4 c analysis analysis will be done according to parameter or analysis requested by customers extraction and instrumentation for raw materials are carried out according to the method specified in the documented test method in each unit by authorized personnel for contravene sample the analysis need to be repeated up to 3 replicates minimum 2 replicates all the data for instrument performance check calibration curve worksheet and result generated from this analysis are attached together and will be compiled and kept result of the analysis will be sent to the respective customers disposal negative sample will be disposed at least 2 weeks after issuance of test report while for contravened samples to be disposed after 150 days from the date of sample received retained samples from microbiology analysis will be disposed within one week of analysis and to be autoclaves before being disposed retained chemical analysis samples can be directly disposed or send back to the customer upon request 0 000000 0 000000 tags final report comment hello world filed under greeting leave a comment september 5 2010 hi hello greeting meet me azel el liza that all i m newbie here but not in blogging i am blogger user before this but i decided to try on wordpress agak kekok lagi tapi i m trying to do better back to track i wish to make this blog as my chemistry life journal so that i wouldn t forget anything that i do what i ve experience through my chemical life ok i m stating here that my passion is in chemistry and also on writing novel poem and short story and also skecthing so in this blog will full with this kind of stuff oh ya i m kindda person who s like to play with words my other favorite subject is philosophy so it is often to me to write on what i m thinking my hope make new friends meet people who has same passion with me so i can exchange idea with them call me crazy but i know someday i ll find cure for alzheimer aids cancer and so on every diseases in this world has it s own cure we just have to find it el 0 000000 0 000000 comment recent entries intro of my final report hello world browse popular tags final report meta create account log in entries rss comments rss friends links documentation plugins suggest ideas support forum themes wordpress blog wordpress planet pages who s el monthly archives october 2010 september 2010 blog at wordpress com back to top subscribe subscribed azeliza s blog sign me up already have a wordpress com account log in now privacy azeliza s blog subscribe subscribed sign up log in report this content view site in reader manage subscriptions collapse this bar design a site like this with wordpress com get started