Graphic grades

Once the <5 and y values of a given blend are determined, the values are positioned in the graphic chart given in Fig. 37 [77]. The blends that fall within the kidney-shaped area yield good solutions with all solvent grade polychloroprene types, except for Neoprene AH, and those which fall outside that area will not dissolve the polychloroprene. The solvent blends which fall within the shadow area, may or may not dissolve the polychloroprene depending on the amount of toluene. 

When pool water is treated according to the rules (pH between 6.8 and 7.2) we can deduct from the graphic hereunder that the disinfection grade or % value of hypochloric acid is going down we are losing efficacy ... 

P.Y.93 has no importance in the paint industry. The graphic ink field uses P.Y.93 only where fastness standards are high, such as in high grade packaging and metal deco inks. 

Hydraulic grade line Graphic representation of the mechanical energy equation as hydraulic or pressure head against length slope is frictional head loss per unit length. 

Amino Acids and Peptides. The amino acids and peptides used were high grade commercial products, further purified by recrystallization from alcohol-water mixtures, except when they were chromato-graphically pure. Glycolamide was prepared by passing dry ammonia into cold, freshly distilled ethyl glycollate. Pure lactamide was obtained from E. H. Harris of this laboratory. 

The evolution of the effective toughness, Ketr (deduced graphically), towards the apparent toughness, Kjmax (calculated for aAV = 0.5 using equation 1), over 5 decades of test speed - at room temperature - and from -30 to 60°C - at 0.001 m/s, i.e. in the ductile range for both grades - can be summarised as follows according to Fig. 6 and 7 ... 

On a more practical level, pharmacists also should strive to provide patient educational materials that are written at a low literacy level. The National Work Group on Literacy and Health recommends that materials should be at the fifth-grade level or lower, yet most patient education materials are written at the eleventh-grade level. Patient education materials should be short, simple, and contain culturally sensitive graphics. Easy-to-read written materials should be combined with verbal instructions, which ideally should be repeated on several different occasions to reinforce patient understanding. Involving family members in the patient education process also can promote adherence. 

The relationship, between relative humidity and light fastness is also reviewed by McLaren (J.S.D.C., 1963, 79, 618). Specimens of red cotton dyed with an azoic dye, known to be moisture sensitive with regard to light fastness, were exposed, together with standards in constant-humidity sealed vessels. The results of these experiments are shown graphically in Fig. 25.7. It will be noticed that on the light fastness ordinate, 6-7 appears where 7 would normally be expected. This is because up to standard 6, each grading is twice as fast as the one below, but standard 7 is four times as fast as 6. 

Polybasic acids are now available commercially in various purity grades. The chemistry of polybasic acids has been explained by Wheeler and coworkers A common product of commerce contains 70-80% dibasic acid, 15-20% of higher functionality acids, and small amounts of monomeric acids. Much of the literature associated with commercial materials refer to it as "dimer" or mixed dimerized fatty acids. This terminology, accordingly, will be used here. The acid may be represented graphically as HOOCDCOOH where D is a 34-carbon radical. 

Most work discussed here regarding standard Antek on-line/at process analyzers, laboratory based equipment, and the High Speed Sulfur (HSS) on-line analyzer was carried out in the PAC Houston R D Laboratory and Production facility. Other data were collected from various industry and public sources and are so identified in the associated text and graphics. Various solvents, sulfur sources, and standard reference materials were used in association with both historical and new data. Solvents and chemicals, such as iso-octane, toluene, and dibutyl sulfide, were of typically reagent grade purity and were obtained from readily available commercial sources, such as Aldrich chemicals. When appropriate, these materials were analyzed before use. 

Using experimental results obtained with the three Santoprene grades studied, the entrance pressure drop and the apparent extensional viscosity were calculated according to equations (18) and and (19). Results are given in graphical terms in Figures 11 and 12 respectively. 

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