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Nanjing Ruinike Technology Development Co., Ltd
Calibration and validation methods for PFA volumetric flasks
Date: 2025-02-12Read: 2
1. Product Name: PFA volumetric flask
2. Material: High purity imported experimental grade PFA raw material
3. Oral structure:Nut design,Threaded cap seal to prevent sample contamination
4. Appearance:透明，方便定容
5. Calibration of circular scale identification: "In"
6. Calibration tolerance: The scale lines on each PFA volumetric flask are accurately weighed and marked using a one thousandth electronic balance, with tolerances in accordance with DIN EN ISO 1042
7. PFA material has excellent chemical corrosion resistance and can be used for strong oxidants, high concentrations of acids and bases, hydrocarbons and ketones, as well as organic solvents
8. With laser engraved scale lines, the lines are clear and easy to observe the liquid level, accurately determining the volume
9. Due to the stability of PFA material, as a constant volume instrument, it has good dimensional stability. Even at 121 ℃ (high temperature and high pressure sterilization), it will not cause changes in calibration tolerances (to protect the circular scale markings, the cleaning temperature should be below 60 ℃)
10. High thermal stability, able to withstand temperatures ranging from -200 ℃ to+260 ℃ (as a constant volume vessel, we advise customers not to use it directly as a heating vessel)
11The material is pure and will not produce cross contamination, which will affect the sample data
12、Due to the current lack of domesticPFAFor the level identification standards of plastic volumetric flasks, we temporarily refer to the calibration standards of glass volumetric flasks, as follows:
Single label volumetric flask
Nominal total capacity（ml） |
10ml |
25ml |
50ml |
100ml |
250ml |
500ml |
1000ml |
|
Capacity allowed（ml） |
level |
±0.02 |
±0.03 |
±0.05 |
±0.10 |
±0.15 |
±0.25 |
±0.40 |
Blevel |
±0.04 |
±0.06 |
±0.10 |
±0.20 |
±0.30 |
±0.50 |
±0.80 |
|
Scale line width（mm） |
≤0.4 |
≤0.5 |
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After batch inspection and calibration by Nanjing Metrology Supervision and Testing Institute，Our volumetric flask error value，can reachGlass volumetric flaskStandard. For specific identification and calibration values, please refer to the data issued by Nanjing Institute of Metrology Supervision and Testing for details.
13. Application areas: Widely used in trace analysis such as ICP-MS, ICP-OES, and isotope analysis experiments; In analytical laboratories of various industries such as the Centers for Disease Control and Prevention, Environmental Testing Centers, New Materials, New Energy, Polycrystalline Silicon, Semiconductors, etc
