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在化学分析与环境监测的广阔领域里，精准的pH值测量是基础中的基础。多年的实验室工作经验告诉我，一个微小的pH偏差，都可能对实验结果产生重大影响。而氢氧化钙pH溶液标准物质，正是那把确保我们测量准确无误

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中国消费者报南宁讯记者顾艳伟）12月6日下午，2021年广西、海南、广东、福建等南部沿海四省区）以视频连线方式召开食品安全风险预警交流会。会上，四省区）签署合作协议，共同构建南部沿海区域食品安全共治共