Casein culture medium | Physical and chemical standard

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Casein culture medium 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	N-Z-AMINE A	65072-00-6	10.0g/L	/	Water
		Glucose	58367-01-4	40.0g/L		/
		Sodium acetate	6131-90-4	40.0g/L		/
		Potassium Phosphate Monobasic	16788-57-1	1.0g/L		/
		Potassium Phosphate Dibasic	7758-11-4	1.0g/L		/
		L-Tryptophan	73-22-3	0.4g/L		/
		L-Cysteine monohydrochloride	52-89-1	0.4g/L		/
		L-Aspartic acid	56-84-8	0.6g/L		/
		Adenine	73-24-5	0.02g/L		/
		Guanine hydrochloride	635-39-2	0.02g/L		/
		Uracil	66-22-8	0.02g/L		/
		Xanthine	69-89-6	0.02g/L		/
		Tween 80	9005-65-6	0.1g/L		/
		Glutathione	70-18-8	0.005g/L		/
		Magnesium sulfate heptahydrate	10034-99-8	0.4g/L		/
		Sodium chloride	7647-14-5	0.02g/L		/
		Ferrous sulfate heptahydrate	7782-63-0	0.02g/L		/
		Manganese sulfate monohydrate	10034-96-5	0.02g/L		/
		Riboflavin	83-88-5	0.001g/L		/
		4-Aminobenzoic acid	150-13-0	0.002g/L		/
		Pyridoxine hydrochloride	58-56-0	0.004g/L		/
		Thiamine hydrochloride	67-03-8	0.0004g/L		/
		Calcium D-Pantothenate	137-08-6	0.0008g/L		/
		Nicotinic acid	59-67-6	0.0008g/L		/
		D-Biotin	58-85-5	0.00002g/L		/
		pH	/	6.8		0.1

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 24 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 100mL. 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	Solid 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.