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钙硬度测试盒 Acid capacity to pH 4.3 ("SBV", ANC) Method: titrimetric with titration pipette Aquamerck®
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1,5-二苯卡肼 GR for analysis and redox indicator ACS,Reag. Ph Eur
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1,5-二苯卡肼 GR for analysis and redox indicator ACS,Reag. Ph Eur
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二甲酚橘四钠盐 metal indicator ACS,Reag. Ph Eur
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二甲酚橘四钠盐 metal indicator ACS,Reag. Ph Eur
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pH试纸 non-bleeding pH 2.5 - 3.0 - 3.3 - 3.6 - 3.9 - 4.2 - 4.5
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甲基橙溶液 0.1% indicator pH 3.1-4.4 (red yellow-orange)
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甲基橙溶液 0.1% indicator pH 3.1-4.4 (red yellow-orange)
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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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