Recommended Storage Freezer

The aldehyde contains small amounts of the starting ester and the overreduced alcohol along with other minor impurities. It can be stored for short periods of time (1-2 days) in a freezer at -20°C without significant deterioration. However long term storage is not recommended. 

Probably more than any other factor, observe proper storage temperature as recommended by the manufacturer. Monitor refrigerators and freezers used for storage of immunochemicals... 

Handling, Storage, and Precautions store under argon in freezer stable as solid solutions are air sensitive. Literature describes the use of perchlorate salts but their use cannot be recommended due to risk of detonation. Use in a fume hood. 

Study of the recent publication by the National Bureau of Standards on sampling, sample handling, and analysis (24) suggests that the best method of handling the oil and water is to filter, bubble with N2, and not acidify. Storage in acid-washed, conventional polyethylene bottles in a freezer is recommended. 

Methyl nitrate is a use-it-as-you-make-it explosive. This substance should never be stored for more than a few days before use. The cold of a freezer slows down the decay of this substance, but doesn t stop it. Storage in a freezer is highly recommended. 

Storage of antibodies is controversial. Hint After years of antibody use, we recommend storing antibodies in small aliquots in microfiige tubes in a -70 C freezer. These aliquots of about 10 p. contain enough liquid for one or two uses. These antibodies will last for many years at this temperature and will not dry because there is no circulating cold air. The downside is that this process requires a lot of space and a great record system to keep track of where individual antibodies are located. 

This compound can be stored in the presence of a trace amount of radical inhibitor such as 4,4 -thiobis(2-tert-butyl-m-cresol) in a freezer for several months without significant decomposition. The checkers recommend that 1 be used as soon as practicable, as they observed significant amounts of polymerization upon storage for 1 month, even in the presence of the radical inhibitor. However, the checkers found that 2 is stable for 3 months in the presence of the inhibitor. 

The molecular structure of NbBr3(dme) is currently unknown. The solid appears to be stable at room temperature when stored under an inert atmosphere. However, storage in a low-temperature freezer ( < — 30°C) is recommended. 

Decision 2002/657/EC recommends procedures for assessment of analyte stability in solution. Sufficient standard solution should be prepared to provide at least 40 replicate aliquots of the standard solution for testing. From this stock, 10 replicate portions should be taken to assess each of the proposed conditions of temperature for storage, which typically are temperatures such as -20°C, - -4°C and - -20°C (typical temperatures in a freezer, a refrigerator and room temperature ). Two sets (10 aliquots per set) should be prepared for testing at - -20°C, one to be stored in light, the other in the dark. The tests should be conducted at time intervals such as ... 

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