Handle packaged drinking water test report GB 19298 test items.
As people's attention to drinking water safety continues to increase, the importance of packaged drinking water test reports is becoming increasingly prominent. In order to ensure the quality and safety of drinking water, China has formulated the GB 19298-2014 "National Food Safety Standard for Packaged Drinking Water" standard, which clearly stipulates the testing items and requirements for packaged drinking water. This article will introduce in detail the test items and requirements of GB 19298 in the packaged drinking water test report.
1. Routine index detection.
1.Microbiological indicators: total number of colonies, coliforms, molds, yeasts, etc. These microbial indicators are important parameters to evaluate the quality of drinking water, and they are also an important basis for judging whether drinking water meets sanitary standards. According to the GB 19298 standard, the total number of colonies in packaged drinking water must not exceed CFU ml, coliform bacteria must not be detected in ml, and mold and yeast must not exceed CFU ml.
2.Physical and chemical indexes: sensory indicators (color, smell, taste), turbidity, total hardness, pH value, total dissolved solids, etc. These physical and chemical indicators are important parameters to evaluate the quality of drinking water, and they are also an important basis for judging whether drinking water meets the quality standards. According to the requirements of the GB 19298 standard, the sensory indicators of packaged drinking water should meet the specified requirements, the turbidity should not exceed 1NTU, the total hardness and total dissolved solids should not exceed the limit value, and the pH value should be within the specified range.
3.Contaminant indicators: heavy metals and harmful substances such as lead, arsenic, cadmium, and chromium are important pollutant indicators in the testing of packaged drinking water. According to the requirements of GB 19298 standard, these pollutant indicators should comply with the provisions of relevant national standards.
2. Detection of unconventional indicators.
Non-conventional index testing is a selective testing item according to the specific situation and needs, such as specific pollutant indicators in some regions, specific substances added to the production process, etc. In GB 19298, unconventional indicators include: heavy metals such as copper, zinc, silver, etc.;Pesticide residues;Industrial Pollutants;environmental hormones, etc. The detection of these unconventional indicators provides a more complete picture of the quality and safety of drinking water.
3. Detection methods.
In view of the above indicators, GB 19298 stipulates corresponding detection methods, including detection methods for sensory indicators, physical and chemical indicators, microbial indicators and pollutant indicators. These assays need to be operated and performed in accordance with relevant regulations to ensure the accuracy and reliability of the test results.
4. Precautions.
When handling the packaged drinking water test report, special attention needs to be paid to the following points:
1.Select a testing agency with relevant qualifications and experience to ensure the authority and legal effect of the test report.
2.Before testing, samples need to be collected and processed to ensure the representativeness and authenticity of the sample. At the same time, it is also necessary to store and transport the samples properly to avoid contamination or deterioration of the samples.
3.When conducting testing, it is necessary to operate and execute in strict accordance with relevant regulations and standards to ensure the accuracy and reliability of the test results. At the same time, it is also necessary to reasonably process and analyze the experimental data to draw scientific and objective conclusions.
4.When handling the packaged drinking water test report, relevant information and supporting documents need to be provided.
To sum up, the test items of the packaged drinking water test report GB 19298 are one of the important measures to ensure the quality and safety of drinking water. Through the reasonable selection and implementation of testing items, we can have a comprehensive understanding of the quality and safety of drinking water, and provide better protection for people's health.