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余氯测试盒 (free and total chlorine) with liquid reagent Method: colorimetric
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德国默克Merck0.01%标准水样1.88050.0010
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饮用水专用高余氯测试盒 (free chlorine) Method: colorimetric, DPD, with colour-disk
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余氯测试试剂3 for chlorine test (DPD) 0.010 - 6.00 mg/l Cl₂ free chlorine: Cl₂-1
Chlorine reagent Cl2-3 (liquid) for chlorine test (DPD) 0.010 - 6.00 mg/l Cl2 free chlorine: Cl2-1
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余氯测试试剂2 for chlorine test (DPD) 0.010 - 6.00 mg/l Cl₂ free chlorine: Cl₂-1
Chlorine reagent Cl2-2 (liquid) for chlorine test (DPD) 0.010 - 6.00 mg/l Cl2 free chlorine: Cl2-1
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余氯测试试剂1 for chlorine test (DPD) 0.010 - 6.00 mg/l Cl₂ free chlorine: Cl₂-1
Chlorine reagent Cl2-1 (liquid) for chlorine test (DPD) 0.010 - 6.00 mg/l Cl2 free chlorine: Cl2-1
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饮用水专用低余氯测试盒 (free chlorine) with liquid reagent Method: colorimetric, DPD
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德国MERCK默克余氯试纸1.17925.0001
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臭氧测试试剂 Method: photometric, DPD 0.010 - 4.00 mg/l O₃ Spectroquant®
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臭氧测试试剂 Method: photometric, DPD 0.010 - 4.00 mg/l O₃ Spectroquant®
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