Standard sample for permanganate index of chlorinated water quality

Number: BWZ9098-2016

NameStandard sample for permanganate index of chlorinated water quality

Applicable method standard: HJ 1447-2026

Reference standard value: 5.50mg/L

Uncertainty: 0.40mg/L

Packaging: 20mL

1、 Sample preparation

Standard sample for permanganate index of chlorinated water qualityUsing high-purity substances with predetermined purity values as solutes and chlorine containing water (4000mg/L) as solvents, at room temperaturePrepared using the weight capacity method in a clean laboratory at (20 ± 3) ℃.

2、 Dilution method

This standard substance should be diluted according to the following procedure before use: Use a clean and dry pipette to accurately transfer 10.0mL of concentrated solution from the ampouleDilute the sample into a 250mL volumetric flask with chlorine containing water (4000mg/L) to the mark, mix well, and use immediately.

3、 Diluted characteristic values and expanded uncertainty

Please refer to the accompanying certificate

4、 Uniformity inspection and stability assessment

According to the JJF1343 National Metrology Technical Specification (equivalent to ISO 33405), the packaged samples were randomly sampled and titratedThe (capacity) analysis method is used to perform uniformity testing and long-term stability tracking investigation on the standard substance. The results indicate that the uniformity meets the F-test criteriaThe rules and stability are well tested.From the date of self determination of the quality value of this standard substance, the validity period is 12 months. The development unit will continue to track and monitor the stability of this standard substanceIf any changes in the quantity are found during the validity period, the user will be notified in a timely manner.

5、 Packaging, Storage, and Use

Packaging: This standard substance is packaged in brown ampoules, with a specification of 20mL. It should be protected against breakage when carried or transported.Storage and use: Store at room temperature, sealed and away from light. Before use, it should be kept at a constant temperature of (20 ± 3) ℃ and shaken thoroughly to ensure uniformityUniform. This standard substance should be used as soon as possible after opening, and contamination should be strictly prevented during use.

Other batch references:

BWZ9098-2016A Chlorine containing Water Quality Permanganate Index (Standard Sample) (HJ 1447-2026) 3.50mg/L 20mL

BWZ9098-2016B Chlorine containing water quality permanganate index (standard sample) (HJ 1447-2026) 1.75mg/L 20mL

For more information, please contact

Henan Detong Environmental Protection Technology Co., Ltd. (Zhongyuan Standard Material Center)

Customer service inquiry.