Anion Mixed standard solution | 7681-49-4 | Inorganic non-metals (water and wastewater) | Reference Materials

Weiyel Reference Materials

Anion Mixed standard solution

  • consult
  • Cat No.:BWZ6740-2016
  • Form:Liquid State
  • CAS:7681-49-4
  • Term of validit:18 Months
  • Molecular Formula:FNa
Pack Size:
  • 50mL , 100mg/L
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Anion Mixed standard solution View Certificate

This product can be used as a working standard for daily analysis and testing; It can also be used for laboratory quality control such as test method evaluation and instrument calibration.

1、Traceability and value determination method

The standard value is verified by . The traceability of the product quantity value is ensured through the use of production, measurement methods and measuring instruments that meet the requirements of metrological characteristics.

2、Characteristic value and expanded uncertainty

No Analyte CAS Standard value Uncertainty(k=2) Matrix
1 Sodium fluoride 7681-49-4 100mg/L 3% Water
2 NO2 7632-00-0 100mg/L 3%
3 sodium chlorate 7775-09-9 100mg/L 3%
4 Sodium chlorite 7758-19-2 100mg/L 3%
5 Potassium bromate 7758-01-2 100mg/L 3%
6 Sodium chloride 7647-14-5 500mg/L 1%
7 Potassium nitrate 7757-79-1 500mg/L 1%
8 Potassium sulfate 7778-80-5 500mg/L 1%

3、Uniformity test and stability investigation

According to ISO 33405 metrology technical specification, the samples are randomly sampled after packaging, and the uniformity test and long-term stability tracking of the product are carried out by . The results show that the uniformity meets the F test rules and has good stability.

The quantitative value of this product is valid for 18 months from the date of value determination. The research and development unit will continue to track and monitor the stability of the product. If the value changes during the validity period, the user will be notified in time.

4、Packaging storage and use

Packaging: This product is packaged in Plastic bottle, with the specification of 50mL. It should be protected from breaking when carried or transported.
Storage: at 2-8 ℃ and in the sealed and light-proof conditions. Before use, it should be (20±3)℃℃ fully shaken to ensure homogeneity. This product should be used as soon as possible after being opened. During the use process, strict precautions should be taken to prevent contamination.
Anion Mixed standard solution Essential Information
Molecular Formula FNa
Form Liquid State
Stroma Water
Packing Plastic bottle
Save conditions Refrigeration(4±4)℃ Store airtight and away from light place.Before use, the temperature should be adjusted to at 2-8 ℃,shake uniformity.Used up after opening,prevent contamination during use.
Magnitude Information
No Analyte Standard value Uncertainty(k=2) CAS
1 Sodium fluoride 100mg/L 3% 7681-49-4
2 NO2 100mg/L 3% 7632-00-0
3 sodium chlorate 100mg/L 3% 7775-09-9
4 Sodium chlorite 100mg/L 3% 7758-19-2
5 Potassium bromate 100mg/L 3% 7758-01-2
6 Sodium chloride 500mg/L 1% 7647-14-5
7 Potassium nitrate 500mg/L 1% 7757-79-1
8 Potassium sulfate 500mg/L 1% 7778-80-5
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