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HANNA Instruments 100 ppm氟離子標準液 HI4010-02
Fluoride ISE 100 ppm Standard - HI4010-02
HANNA Instruments 0.1M氨離子標準液 HI4001-01
Ammonia ISE 0.1M Standard - HI4001-01
HANNA Instruments 攜帶式餘氯/總氯/濁度計 - EPA HI93414-01
Turbidity (EPA) and Chlorine Portable Meter - HI93414