Reagents freeze-dried

Flow control for the biological protocol. As described above the biological genotyping protocol is performed by moving the sample from chamber to chamber, using the reagents freeze-dried as ready to use in each respective chamber. It is therefore critical to have flow control which... 

Reilly, M. J., and Jenkins, FI. C. (1997). Factors affecting the shelf life of freeze-dried firefly luciferase reagents. In Piastings, J. W., et al. (eds.), Biolumin. Chemilumin., Proc. Int. Symp., 9th, 1996, pp. 257-260. Wiley, Chichester, UK. 

Decomposition of BeS04 (either reagent grade or freeze-dried) yielded BeO [771] and kinetic analyses based on the contracting area equation [eqn. (7), n = 2] for 875—990 K gave values of E from 213 to 226 kJ mole-1. Under non-isothermal conditions, the values of E varied between... 

The reagent methanesulfonyl chloride-IV,IV-dimethylformamide has been used to prepare 6-chloro-6-deoxyamylose of d.s. 0.8 from the polysaccharide,391 but it was necessary first to convert the amy-lose into a reactive form by freeze-drying its aqueous solution. 

Finally, Is the solvating reagent Is added In the vapor phase to the freeze dried polymer, It Is possible to prevent the coupling reaction completely. We think that the THF molecules are preferentially located around the living ends and this hindrance prevents the coupling when the macroradicals are formed. 

In the Penzyme test, freeze-dried Streptomyces oo-carboxypeptidase is placed in sealed vials to which the milk sample is added. A preliminary incubation is carried out for 5 min at 47 C to cause some inactivation of the enzyme molecules. The degree of inactivation is dependent on the amount of -lactams presumed to be present in the milk sample. Subsequent addition of a reagent tablet containing synthetic o-alanine oligopeptide and o-amino acid oxidase followed by reincubation at 47 C for 15 min results in the release of o-alanine, its amount... 

Organisms which have been freeze-dried under vacuum (see above). Some bacteria, for example, can be lyophilized and stored for months at room temperature. They can then be rehydrated on demand and used to conduct bioassays. In the Microtox test, lyophilized Vibrio fischeri are stored in a freezer at -20° C and will be ready for use until the expiration date, which is provided with each batch of Bacterial Reagent. Volume 1(2,3). 

Food samples were freeze-dried, homogenized and weighed into a TeBon PFA vessel followed by the addition of HN03, H202, and HF. The samples were MW heated. After digestion, 2 mL of solution of CFA-C reagent was added (pH 7.5D8.0). Solutions were diluted to 10 mL with water... 

All reactions and sample preparations are carried out in an inert-atmosphere enclosure under dry nitrogen. Solvents and reagents are dried in the following manner. Benzene, tetrahydrofuran, and n-pentane are freshly distilled from lithium aluminum hydride pyridine is distilled over barium oxide and tetramethylethylenediamine is distilled over calcium hydride. Solvents used in preparing nmr and infrared samples are degassed by a freeze-thaw technique. Nmr spectra are obtained with torch-sealed nmr tubes. The commercial transition metal carbonyl complexes are recrystallized and vacuum-dried before use. Glassware is routinely flame-dried. 

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