Teepol

After use the cells must be carefully washed with distilled water, or if an organic solvent which is not miscible with water was employed, they must be rinsed with a solvent which is miscible with both the solvent used and with water, and then well washed with distilled water. Finally, they are rinsed with ethanol followed by drying, which may be conveniently done in a vacuum desiccator. Cells which have become contaminated can usually be cleaned by soaking in a solution of a detergent, such as Teepol. For obstinate contamination recourse may be made to the use of sulphuric acid-sodium dichromate cleaning mixture (CAUTION ) (Section 3.8). After soaking overnight the cells are well washed with water and finally dried. 

A 1 to 3% (w/v) solution of Teepol in water may also serve as a good cleansing agent for the removal of stubborn deposits and stains present in glass apparatus. 

After terminating the coupling reaction with ascorbic acid, reaction mixture clarified by precipitating protein with ethanol Turbidity decreased by final addition of caffein, sodium benzoate, and Teepol micromethod After the coupling reaction with ascorbic acid is terminated, azo color is extracted and read low blank the extract can be applied directly to a thin-layer plate and be separated rapidly to determine the ratio BMC BDC Micro versions assay artificially activated enzyme... 

Another technique for studying the absorption of CO2 into water uses an interferometer to obtain the concentration gradients as close as 0.01 cm. to the surface (Bl) a cine-camera permits results to be obtained within 5 sec. of the admission of the CO2. Though various corrections are I c fiuired, it is claimed that this method eliminates convection difficulties and that resistances as low as 0.25 sec. cm. i can be detected. Experimental results for CO2 into distilled water show no detectable interfacial resistance, though, when surface-active agents (Lissapol, Teepol) are dissolved in the water, the values of Rj are about 35 sec. cm.. ... 

Hyde et al. (24) found that the peak apparent viscosity of lamellar liquid crystal fell by about two orders of magnitude as alcohol chain length was reduced from 15 to five in water-alcohol-Teepol systems. However, the complete picture of how various types of amphiphilic compounds and their mixtures influence viscosity is not available. In particular, it is not known under what conditions fairly low viscosities of liquid crystals can be achieved although Hallstrom and Friberg (22) report viscosities of about 0.2 poise for some compositions in the water— monocaprylin-tricaprylin system. As indicated previously, low viscosities increase the possibilities for occurrence of hydrodynamic instabilities involving cellular convection. 

The sample is prepared for analysis by first washing it by immersion in 0.1% Teepol solution for 15 seconds with gentle wiping of the surface. It is then rinsed rapidly in distilled water and dried at 65 to 70 °C for 24 hours. This material is ground to a powder. 

Histograms of bubble radius in foam are shown in Fig. 1.13. The first one (Fig. 1.13,a) is for a foam obtained from water solution of Teepol and sodium alginate (according to de Vries data) [90] the second (Fig. 1.13,b) is for a foam from sodium alcylsulphate solution (n - 150) [91]. These histograms give a clear visual picture of bubble size distribution in foam. The accuracy of such a stepwise figure depends on the choice of fraction interval the narrower the interval, the more accurately the real distribution is represented. 

Fig. 1.13. Histograms of bubble size distribution (a) - foam from Teepol and sodium alginate solution ...

Mix 11 kilograms of methylpicric acid with 1680 milliliters of water, and then manually blend for 1 hour at room temperature. Then add 1500 milliliters of water, and then manually blend for 30 minutes. Thereafter, add 9 grams of a 0.11% Teepol L solution, and blend for 30 minutes. Then slowly add 500 grams of Wax 3 (p-phenylene diamine and stearic acid) over a period of 30 minutes while rapidly blending the mixture. After all the wax is added, continue stirring at room temperature for 1 hour. Afterwards, place the entire mixture into a shallow pan and allow it dry for several days. 

Cleaning is much easier when the residue is new, so glassware should be cleaned soon after use. Often washing with warm soapy water, using a detergent such as Teepol or Decon 90 , is sufficient. If a brush is used, make sure that metal parts of the brush are covered to avoid scratching the glass. 

When crude petroleum is fractionally distilled there is a wax-like residue in the still. This can be fed into a cracking unit when a high yield of olefines containing between six and twenty carbon atoms is obtained. These are treated with sulphuric acid to give secondary alkyl sulphates such as Teepol ... 

Whole serum does not bind phenol red below a critical albumin concentration of 1.6 g%. Above this critical value, dye is bound in direct proportion to the amount of albumin in excess of the critical value. In jaundice the critical value is elevated. These results were taken to indicate that some binding sites in whole serum are occupied by, for example, bilirubin, bile acids, or fatty acids (B27). Bile salts reduce the binding of BSP (All, A14, R18a). This effect may be due to the detergent properties of bile salts because Teepol has been found to have a similar effect (A14). Binding of rose bengal was not affected by sodium dehydro-cholate or by BSP (E4). 

TeepoL [Raffi Swanson] Vinyl type polymeric emulsions fabric finishes. 

TeepoL [Shell] Sulfonates or sulfates detagent, emulsifier, solubiliza fa dishwash hard surface, germiddaL and general cleaners. ... 

There are numerous variations on this medium using mannitol instead of lactose, teepol or sodium lauryl sulfate instead of bile salts, and alternative indicators such as Phenol Red. However, all the tests are based on the ability of coliforms to grow in the presence of some inhibitor, and ferment lactose or mannitol to acid and gas, the acid changing the colour of the indicator. 

Stand racked slides in a large volume of deionized water (at least 5 L) containing 10-15 mL of TEEPOL HB7 for at least 1 h in a clean container such as an unused plastic bucket... 

---