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  • High precision pH meter
    Price：￥300click to view detail>>
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  • AZ8690 portable pH meter
    Price：￥200click to view detail>>
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  • AZ8403 portable dissolved oxygen meter
    Product description information Product description information Product description information Prod...
    Price：￥298click to view detail>>
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  • AZ86505 pH meter pH meter
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    Price：￥500click to view detail>>
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