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pH缓冲液(pH 5.00±0.01)
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pH试纸 non-bleeding pH 11.0 - 11.5 - 11.8 - 12.1 - 12.3 - 12.5 - 12.8 - 13.0
pH-indicator strips pH 11.0 - 13.0 Special indicator non-bleeding pH 11.0 - 11.5 - 11.8 - 12.1
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pH试纸 non-bleeding pH 0 - 0.5 - 1.0 - 1.3 - 1.6 - 1.9 - 2.2 - 2.5
pH-indicator strips pH 0 - 2.5 Special indicator non-bleeding pH 0 - 0.5 - 1.0 - 1.3 - 1.6 - 1.9
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碳酸氢钠/碳酸钠 certified secondary standard reference material for pH measurement
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邻-苯二甲酸氢钾 certified secondary standard reference material for pH measurement
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PH缓冲液(pH10.00±0.01)
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PH缓冲液(pH9.00±0.01)
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pH缓冲液(pH8.00±0.01)
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pH缓冲液(pH 2.00±0.02),校正液溶液pH 2.00±0.02
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pH缓冲液(pH 3.00±0.02),校正液溶液pH 3.00±0.02
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