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HANNA Instruments 防水型手持式飲用水pH測試儀 HI99192
Drinking Water pH Portable Meter - HI99192
HANNA Instruments 鉻離子化學測試組(約100次測試) HI3846
Chromium VI Chemical Test Kit - HI3846
Paragon 醫用黏度標準品
Medical Viscosity Standards
HANNA Instruments 鹽酸 0.1N, 1L HI70463
Hydrochloric Acid 0.1N, 1L - HI70463