23 Mix perfluorinated internal standard in methanol/water | Organic pollutants (water and air)

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23 Mix perfluorinated internal standard in methanol/water 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	PFBA	375-22-4	5μg/mL	10%	Methanol/water (V/V=1/1)
		PFPeA	2706-90-3	5μg/mL		10%
		PFHxA	307-24-4	5μg/mL		10%
		PFOA	335-67-1	5μg/mL		10%
		PFNA	375-95-1	5μg/mL		10%
		PFDA	335-76-2	5μg/mL		10%
		PFUDA	2058-94-8	5μg/mL		10%
		PFDOA	307-55-1	5μg/mL		10%
		PFTRDA	72629-94-8	5μg/mL		10%
		Perfluorotetradecanoic acid	376-06-7	5μg/mL		10%
		PFHXDA	67905-19-5	5μg/mL		10%
		Perfluorooctadecanoic acid	16517-11-6	5μg/mL		10%
		Potassium 11-chloroeicosafluoro-3-oxoundecane-1-sulfonate	83329-89-9	5μg/mL		10%
		Perfluorohexyl sulfonic acid	355-46-4	5μg/mL		10%
		Perfluorooctane sulfonic acid	1763-23-1	5μg/mL		10%
		Sodium perfluorodecane sulfonate	2806-15-7	5μg/mL		10%
		Sodium perfluoropentyl sulfonate	630402-22-1	5μg/mL		10%
		Perfluorobutanesulfonic acid	375-73-5	5μg/mL		10%
		Perfluoroheptane sulfonic acid	375-92-8	5μg/mL		10%
		Perfluorononanesulfonic acid	98789-57-2	5μg/mL		10%
		Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate	73606-19-6	5μg/mL		10%
		4,8-Dioxane-3H-perfluorononanoic acid	919005-14-4	5μg/mL		10%
		Perfluoroheptanoic acid	375-85-9	5μg/mL		10%

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 Brown ampoule, with the specification of 1.2mL. 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.

Form	Liquid State
Stroma	Methanol/water (V/V=1/1)
Packing	Brown ampoule
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.