Ethylene oxide standard/EO standard

Ethylene oxide standard/EO standard
10ml glass sample bottle
【 Base medium 】 Secondary water
Liquid
GC-ECD/GC-MSD
1. Residual amount of ethylene oxide; Headspace gas phase standard; In accordance with national standard requirements; 6 gradient concentrations are required (1, 2, 3, 5, 8, 10ppm);; You can directly select a concentration of 10mg/L, which is 10ppm, as the mother liquor for gradient dilution. Pure water (such as secondary water from a pure water machine or Watsons distilled water) is used for dilution, and the operational requirements for personnel are relatively low;
2. Or dilute other gradient concentrations according to one's own method; You can choose a slightly higher concentration of 10mg/ml (equivalent to 10000ppm) to dilute the gradient you need; The dilution method is the multiple method (if you don't understand, you can ask the customer service staff);
Ethylene oxide standard/EO standard【 Precautions 】

1. After receiving the standard product, it needs to be stored in a refrigerator or freezer, usually within 4-10 degrees Celsius; Do not save below 0 degrees; (Because this solution is polymerized with pure water, water below 0 degrees will freeze and damage the ampoule).
2. Before using standard configuration; Please place the required pure water, standard samples, volumetric flasks, pipettes, and try to refrigerate them in the refrigerator or freezer; Approximately 4-10 degrees Celsius; To reduce errors caused by epoxy configuration environment;
When configuring, please gently shake the ampoule before opening. This standard grade is stored in inert gas and shaken a few times to allow the EO to evaporate to the upper layer due to storage reasons and dissolve again in water.
3. When configuring the environment, try to configure it in a low-temperature environment as much as possible; If there is no low-temperature environment in the laboratory, it can also be conducted in a constant temperature environment of about 20 degrees Celsius;
4. Personnel are required to wear protective equipment such as gloves, eye masks, work clothes, etc; Working inside a fume hood; In case of reagent contamination on the skin or eyes (although the concentration is low); Clean with running water as soon as possible; Seek medical attention promptly if necessary.
The manufacturer's supply has advantages such as low price and stable quality.