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HANNA Instruments 基礎級 pH 9.18標準液 (@25℃) 500 mL HI7009L
HI7009L pH 9.18 Calibration Solution (500 mL)
HANNA Instruments 基礎級 TDS 6.44 ppt (g/L) 標準液 20 mL x 25包 HI70038C
HI70038C 6.44 g/L (ppt) TDS Calibration Solution (25 x 20mL)
HANNA Instruments 高溫/高壓pH電極 - BNC HI1135B
Refillable pH Electrode with Side Arm Construction and BNC Connector - HI1135B