[KongchangAI]
Unverified90% confidenceCautionTime unknown

TDS笔与pH笔是两类不同产品:TDS只反映水中溶解性固体总量(矿物质+杂质),无法判断水质安全或是否含有害物;养鱼养虾需水质安全评估的应买支持pH+氨氮+亚硝酸盐的多参数笔或试剂,而非单一TDS笔

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