Glass amber containers

Precautions may also have to be taken to prevent loss or gain of moisture, and to prevent photochemical degradation. Light-sensitive samples should be stored in the dark, in amber glass containers or in glass containers protected by aluminium foil. Samples containing volatile constituents should be kept in well-sealed containers and preferably stored in the cold to reduce the vapour pressure of such compounds. 

Dissolve 1.5748 g AgN03 in water and dilute to volume. (2) Dissolve 1.000 g Ag in 10 ml of HN03 dilute to volume. Store in amber glass container away from light. 

Wastewater samples have usually been collected in precleaned amber glass containers. Both discrete and composite samples have been used for the analysis of effluents and influents of WWTPs. Unpreserved samples are normally stored at 4 °C for 48 h, or frozen [48]. Other authors add chemical agents such as methanol, sulfuric acid, or mercuric chloride to prevent bacterial activity during storage, and/or store the samples in supports used for extraction [26,35,57]. 

The preservation mostly through freezing, storing in amber glass containers, restricting the access of tight... 

The collection of samples in Pyrex borosilicate amber glass containers with caps lined with aluminum foil and storage in the dark at 4°C... 

As part of their testing program, the authors exposed sulfonamide tablets and tablets containing the dye D C Orange No, 3 and a benzothiazine derivative, in an open dish and packaged in amber glass containers. The samples stored in the amber bottles showed little photo deterioration with time. This confirmed Arny et al. conclusion regarding the use of amber bottles for photo protection (24). 

The photodegradation of doxorubicin, daunorubicin, and epirubicin solutions is more rapid in clear glass than in polyethylene or amber glass containers (61). Colored glass is not preferred for injections since it is difficult to detect discoloration and particulate matter in the liquid preparation. However, a colorless glass capable of cutting off detrimental radiations is still to be discovered. 

Amber glass containers can be used for light-sensitive SVIs. The amber color is produced by the addition of iron and manganese oxides to the glass formulation. Oxide leachates can occur and catalyze oxidation reactions. 

Photochemical decomposition can be a problem with dmgs such as the pheno-thiazine tranquillisers and can cause discoloration of the solution and loss of activity. Such systems have to be stored in amber glass containers, which remove the ultraviolet components of light. 

The current pack of 100 tablets is an 80 ml rectangular amber glass container fitted with a 28 mm metal screw cap with pulp board/PVdC faced wadding. An additional pack size is required involving a 125 ml cylindrical amber glass pack holding 150 tablets. At this size the screw neck is increased to 33 mm but has identical wadding. Points to consider are as follows. 

EPA 525.2 DMP, DEP, DBP, Drinking 1 1 in amber glass containers, or with SPE on C18 cartridge, after extraction elute... 

APHA 6410B DMP, DEP, DBP, Municipal and 1-2 1 in amber glass container or >250 ml Separatory funnel EEE with 3 X 60 ml DCM... 

Halothane produces rapid onset and recovery from anesthesia with high potency when used alone or in combination with nitrous oxide. Most metals, with the exception of chromium, nickel, and titanium, are easily tarnished by halothane. Although halothane is relatively stable, it is subject to spontaneous oxidative decomposition to hydrochloric acid, hydrobromic acid, and phosgene. For this reason, it is available in dark, amber glass containers with thymol added as a preservative to minimize decomposition. Halothane may permeate into the rubber components of the anesthetic delivery devices, which might account for some slowing of the induction onset and recovery. Approximately 20% of an administered dose is metabolized, which accounts, in part, for the increased hepatotoxicity observed with this agent (Fig. 18.7). 

Ethers are typically packaged under dry nitrogen to exclude water and oxygen, two substances that facilitate peroxide formation. Peroxide formation is also initiated by ultraviolet light As a consequence, ethers are bottled in either metal (tin or aluminum) or amber glass containers. Manufacturers often add stabilizers (a.k.a., preservatives) to the peroxide-forming ethers. 

Water samples for analysis of EDCs and PPCPs are usually collected in amber glass containers, which have been predeaned with reagent water and organic solvents such as methanol and acetone. Discrete or composite samples are sampled in the research studies, but it is appropriate to collect composite samples if the aim of the study is to evaluate the performance of WWTPs. Twenty-foiu hour-composite samples have often been used to represent samples of the WWTPs. 

Acetonitrile, dichloromethane, toluene, MA -diisopropylamine and N.N-diisopropylethyl amine are dried by refluxing over calcium hydride (-40 mesh), distilled, and stored over 4-A molecular sieves in dry amber glass containers. 

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