Condition storage

Keep refrigerated in a closed vessel to minimise bacterial growth and protease activity. 

Avoid conditions close to stability limits (for example, extreme pH, pH values close to the isoelectric point of the target protein or salt concentrations, reducing or chelating agents). 

If essential add stabilising agents. These are more often required for storage of purified proteins. 

Store in high concentration of ammonium sulphate (e.g. 4M). Freeze in 50% glycerol, especially suitable for enzymes. Add stabilising agents e.g. glycerol (5-20%), serum albumin (10 mg/ml), ligand (concentration is selected based on the concentration of the active protein). Sterile filter to avoid bacterial growth. 

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It is prepared by the direct nitration of toluene with a mixture of nitric and sulphuric acids. TNT is a very stable, violent and powerful high explosive, but less sensitive to shock and friction than picric acid. It is widely used as a filling for shells, bombs, etc. often mixed with ammonium nitrate and other high explosives. The lower grades of TNT may contain isomers which under hot storage conditions may give rise to exudation. 

The primary thmst of GMP is that it is not enough merely to make chemicals to meet USP or other apphcable specifications. The chemicals must be made under clean and sanitary conditions, procedures and processes must be vahdated and documented, and processing and packaging must be carried out under conditions that preclude mixup and mislabeling. Records must be kept of complaints, and the manufacturer must know enough about the storage properties of the products to specify storage conditions and, if necessary, expiration dates on the label. 

Methanol is stable under normal storage conditions. Methanol is not subject to hazardous polymerization reactions, but can react violendy with strong oxidizing agents. The greatest hazard involved in handling methanol is the danger of fire or explosion. The NFPA classifies methanol as a serious fire hazard. 

Stabihty studies ate developed to assure a desirable shelf-life period. These also estabhsh limits of acceptabiUty for impurities and degradation compounds, when present, and determine acceptable storage conditions for raw materials and the manufactured products. Stabihty studies are thus important to the deterrnination of expiration dates for dmg products. 

The amine ends also react with atmospheric contaminants, such as SO2 and oxides of nitrogen and ozone, under ambient storage conditions (50). This phenomenon is referred to as aging and results in reduced acid dye affinity. 

Unrefined alkylphenols are generally produced in the simple batch reactors described eadier. An alkene with between 8 and 12 carbon atoms reacts with phenol to produce a mixture of reactants, mono alkylphenols, and dialkylphenols. These mixtures usually do not free2e above 25 °C and so are Hquid at production and storage conditions. The product is generally used in the same factory or complex in which it is produced so shipment typically consists of pumping the material from the reactor to a storage tank. 

Many tracer chemicals are inherently unstable even as the unlabeled forms. Susceptibility of a chemical to hydrolysis, oxidation, photolysis, and microbiological degradation needs to be evaluated when designing suitable storage conditions for the labeled compound. Eactors that reduce radiolytic degradation, such as dispersal in solution, are apt to increase chemical degradation or instability. 

A great deal of empirical information has been developed on storage conditions and additives which reduce the rate of decomposition of tracer... 

The diversity of radionucHde half-life and chemical nature of commonly used radiopharmaceuticals demands a variety of formulation matrices, packaging containers, and storage conditions. The containers, ingredients, and processes used in these products must meet the stringent requirements for parenteral pharmaceuticals, as well as provide safe conditions for storage, handling, and disposal of the radioactive material. 

The analyses can be carried out in the presence of /V-methy1o1 groups. On fabric, the formaldehyde bisulfite compound is decomposed by excess sodium carbonate and the Hberated sulfite is titrated with 0.1- or 0.01-N iodine solution (76). Commercial fabrics are seldom washed and dried before being used, and the free formaldehyde content may be between 50 and several hundred ppm, depending on finishing and storage conditions. 

L-Ascorbic acid is screened or pulverized into a variety of particle sizes. It is usually packaged in 25-kg and 50-kg quantities in standard, polyethylene-lined containers, eg, fiber dmms, cormgated boxes, etc. The recommended storage conditions are low humidity and temperatures of <23 C. 

Storage and Transportation. Handling requirements are similar to Hquefied petroleum gas (LPG). Storage conditions are much milder. Butylenes are stored as Hquids at temperatures ranging from 0 to 40°C and at pressures from 100 to 400 kPa (1—4 atm). These conditions are much lower than those required for LPG. Their transportation is also similar to LPG they are shipped in tank cars, transported in pipelines, or barged. 

At this stage of manufacture, chocolate may be stored for future use in bulk Hquid form if usage is expected to be within one to two weeks, or at 43—50°C in a hot water jacketed agitated tank or in soHd block form where it can be stored for as long as 6 to 12 months. Blocks typically weigh between 3 and 30 kg. Storage conditions for block chocolate should be cool and dry, ie, 7 to 18°C and 40 to 45% relative humidity. If chocolate has been stored in block form, it can be remelted to temperatures up to 50°C and then processed in the same manner as freshly made Hquid chocolate. 

Safe dilution requirements can be given for the gas phase in a flammability diagram or equation (270,273). Alternatively, safe vapor dilution can be given in terms of the Hquid storage conditions where allowance can be made for solubility of the inert gas in Hquid ethylene oxide (273). 

Barrier and type of bag construction material Filling-machine characteristic Conveying, handling, and storage conditions ... 

Safer Storage Conditions The hazards associated with storage facihties can often be reduced significantly by changing storage con(i-tions. The primary objective is to reduce the driving force available to transport the hazardous material into the atmosphere in case of a leak (Hendershot, 1988). Some methods to accomplish this follow. 

Pressure sensitive labels and tapes for the consumer markets form a very significant portion of the PSA industry. Whereas the original products were rather simple in construction and use, today s products often perform unique functions that result from more sophisticated assembly of a label or tape product. Examples of these unique functions include the monitoring of food or drug storage conditions, or the ability to monitor the charge status of a battery. 

The high temperatures required for phenolic cure are generally viewed as positive characteristics, as they insure that the phenolic does not cure at normal room-temperature storage conditions. This keeps the adhesive soft so that it retains the desired adhesive properties. 

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