The screw cap of PFA volumetric flask for water quality trace analysis ICP instrument has small super sealing error coefficient

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Product Name: PFA volumetric flask 2
Material: high purity imported experimental PFA raw material
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Mouth structure: nut design, threaded cover sealing to prevent sample pollution
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Appearance: highly transparent, easy to fix volume
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Ring scale mark calibration: & ldquo; In”
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Calibration tolerance: the scale mark on each PFA volumetric flask is accurately weighed and marked with an electronic balance of one thousandth
The class a tolerance is in accordance with DIN EN ISO 1042
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PFA material has excellent chemical corrosion resistance
It can be used in strong oxidants, high concentration acid-base, hydrocarbons, ketones and other strong corrosive and organic solvents
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With laser engraving scale line, the score line is clear, which is convenient to watch the liquid level and accurately determine the volume
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Due to the excellent stability of PFA material, as a constant volume instrument, it has good dimensional stability
Even if 121 ℃ (high temperature and high pressure sterilization), it will not cause the change of calibration tolerance (in order to protect the annular scale mark, the cleaning temperature should be lower than 60 ℃)
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High thermal stability, can withstand - 200 ℃ to + 260 ℃ (as a constant volume vessel, we advise customers not to use it directly as a heating vessel)
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PFA material has superhydrophobic, non-toxic and smooth surface, and will not produce cross groove staining, which will affect the sample data
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As there is no grade identification standard for plastic volumetric flasks such as PFA in China, we temporarily refer to the calibration standard for Glass Volumetric Flasks, as follows:
Single standard line volumetric flask

Nominal total capacity (ML)		25ml	50ml	100ml	250ml	500ml
Allowable capacity (ML)	Class A	& plusmn; zero point zero three	& plusmn; zero point zero five	& plusmn; zero point one zero	& plusmn; zero point one five	& plusmn; zero point two five
	Class B	& plusmn; zero point zero six	& plusmn; zero point one zero	& plusmn; zero point two zero	& plusmn; zero point three zero	& plusmn; zero point five zero
Scale line width (mm)		& le; zero point four				& le; zero point five

after batch spot check and batch calibration by Nanjing Institute of Metrology supervision and testing, the error value of our volumetric flask can reach the Class standard
For specific identification and calibration values, please refer to the data issued by Nanjing Institute of Metrology supervision and testing for details

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Application: widely used in ICP-MS, ICP-OES and other trace analysis, isotope analysis and other high-end experiments; CDC, environmental testing center, new materials, new energy, polysilicon, semiconductor and other industries