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HANNA Instruments TDS測試筆 - 低範圍 HI98301
DiST 1 Waterproof TDS Tester (0-2000 ppm) - HI98301
HANNA Instruments 硫酸 10%, 500mL HI70443
Sulfuric Acid Reagent 10%, 500 mL - HI70443
DLAB 可見光分光光譜儀
Spectrophotometer, VIS
HANNA Instruments 海水氨氮比色計 HI784
Marine Line Ammonia Checker HC - HI784
HANNA Instruments 防水型手持式pH/ORP測試儀 HI98190
Professional Waterproof Portable pH/ORP Meter - HI98190