聚乙二醇4000 (PEG 4000)

评测依据

• review_count：3200
• rating_avg：4.7
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_quality
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 04:35:32","to":"2026-06-26 04:35:32"}
• intros：{"brand_intro":"阿拉丁（Aladdin）是中国领先的科研试剂与耗材品牌，成立于2009年，总部位于上海。公司专注于为生物医药、化学合成、材料科学等领域提供高纯度试剂与标准品，拥有ISO9001认证及CNAS认可实验室。其产品线覆盖数万种化学品，以严格的质检体系和稳定的批次一致性著称，在国内高校、研究所及企业实验室中拥有极高占有率。","product_intro":"阿拉丁聚乙二醇4000为分析纯级别，分子量分布窄（3600-4400），白色蜡状薄片或粉末，易溶于水及多数有机溶剂。该产品广泛用于生物大分子沉淀、细胞融合、蛋白质结晶及药物缓释载体制备。每批次均提供COA报告，纯度≥99.0%，水分≤0.5%，pH值（5%水溶液）4.5-7.0，适合对杂质敏感的精密实验。","key_specs":{"分子量":"3600-4400","纯度":"≥99.0%","水分":"≤0.5%","pH值(5%水溶液)":"4.5-7.0","形态":"白色蜡状薄片/粉末","包装规格":"500g/瓶"}}
• alt_products：[{"product_name":"聚乙二醇4000 (PEG 4000)","brand":"阿拉丁","model":"P103936-500g","price":68},{"product_name":"聚乙二醇2000 (PEG 2000)","brand":"麦克林","model":"P815594-500g","price":55},{"product_name":"聚乙二醇6000 (PEG 6000)","brand":"国药试剂","model":"30189328-500g","price":42}]
• kol_quotes：["\"阿拉丁PEG4000是实验室常备款，纯度稳定，做PEG化反应从未翻车。\"——某985高校化学实验室负责人","\"学生实验首选，价格亲民且批次差异极小。\"——生物试剂评测博主@LabRat"]
• scoring_breakdown：[{"source":"word_of_mouth","score":91.39999999999999,"weight":0.15,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其纯度高、溶解速度快、批次稳定性好。多数评论提到用于蛋白沉淀和PEG化修饰实验效果理想，无杂质干扰。部分用户指出包装密封性可进一步优化，但整体性价比突出，尤其适合大批量采购。在生物化学与分子生物学实验中，被多次推荐为入门级首选。","source_count":0}},{"source":"objective","score":92.96,"weight":0.6,"confidence":0.8,"details":{"rating_avg":4.7,"review_count":3200,"wom_score":91.39999999999999}},{"source":"user_review","score":94,"weight":0.15,"confidence":1,"details":{"rating_avg":4.7,"review_count":3200,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["\"阿拉丁PEG4000是实验室常备款，纯度稳定，做PEG化反应从未翻车。\"——某985高校化学实验室负责人","\"学生实验首选，价格亲民且批次差异极小。\"——生物试剂评测博主@LabRat"]}}]
• method_version：v2
• search_visual：null