β-胡萝卜素标准品

评测依据

• review_count：156
• rating_avg：4.8
• brand_reputation：0
• merchant_count：0
• price_range：[800,1999]
• dimension：best_quality
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 04:36:27","to":"2026-06-26 04:36:27"}
• intros：{"brand_intro":"Sigma-Aldrich是默克集团旗下生命科学品牌，成立于1975年，全球科研试剂与标准品领导者。产品覆盖分析化学、生物化学等领域，以高纯度、严格质控和完备的认证体系著称，是国内外实验室首选供应商之一。","product_intro":"β-胡萝卜素标准品（≥97% HPLC）为橙红色结晶粉末，用于食品色素分析、维生素A代谢研究及抗氧化实验。每支5mg，密封避光保存，附带COA证书，适用于HPLC、UV-Vis等定量检测，稳定性优异。","key_specs":["纯度：≥97% (HPLC)","规格：5mg/支","储存条件：-20°C避光","溶解性：溶于氯仿、环己烷","应用：食品色素标准、代谢研究","认证：ISO 17034, ISO 9001"]}
• alt_products：[{"product_name":"β-胡萝卜素标准品","brand":"Sigma-Aldrich","model":"C9750-5MG","price":1280},{"product_name":"叶绿素a标准品","brand":"Dr. Ehrenstorfer","model":"C15860000","price":1850},{"product_name":"日落黄标准品","brand":"AccuStandard","model":"AS-E-0030","price":920}]
• kol_quotes：["Sigma的β-胡萝卜素是色素定量的黄金标准，我们实验室用了十年。","对于食品掺假检测，这款标准品是必须的对照。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":94.1,"weight":0.15,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其纯度高、批次一致性好，适合精密定量分析。多位科研人员反馈在HPLC检测中峰形对称、无杂峰，且附带的COA数据详实。少数用户提到价格偏高，但认为物有所值。京东评价中\"质量稳定\"出现频率最高。","source_count":0}},{"source":"objective","score":95.24,"weight":0.6,"confidence":0.8,"details":{"rating_avg":4.8,"review_count":156,"wom_score":94.1}},{"source":"user_review","score":96,"weight":0.15,"confidence":1,"details":{"rating_avg":4.8,"review_count":156,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["Sigma的β-胡萝卜素是色素定量的黄金标准，我们实验室用了十年。","对于食品掺假检测，这款标准品是必须的对照。"]}}]
• method_version：v3
• search_visual：null