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QualityCheck WS residual free chlorine QC sample EPA 州标准品
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SRM-C11F1QCP 铁单元素标准溶液(5%硝酸基体)
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SRM-C11D1QCP 钯单元素标准溶液(2%盐酸基体)
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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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Cole-Parmer Replacement Membrane Cap for Free Chlorine Sensors
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3种阴离子混标(氟离子,氯离子,溴离子),100μg/ml in H2O(不确定度 2%)
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3种阴离子混标(氟离子,氯离子,溴离子),1000μg/ml in H2O(不确定度1%)
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QC-01–175
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