Chemists tell why they depend on and use the Actual Lot Analysis on 'Baker Analyzed' Reagents PHARMACEUTICAL Chemists "We depend on reagents providing the Actual Lot Analysis," writes a Chief Quality Control Chemist of a pharmaceutical company "// is of special value to us to have reagents of very low metal content or no metal at all. The Actual Lot Analysis tells us the metal content in our reagent. Sodium Hydroxide is used in making our vitamin solution with ascorbic acid. Metals, especially iron, decompose ascorbic acid. Therefore, we depend on Sodium Hydroxide with the Actual Lot Analysis to know the amount of metals present " The Technical Director for a vitamin manufacturer writes, "Analyzed chemicals insure that element of quality essential to uniformity of finished product. By using reagents providing the Actual Lot Analysis, we are assured that our products will continually meet our high quality standards." In no other industry is quality control more vital than the pharmaceutical industry. 'Baker Analyzed' Reagents combine the highest standards of purity and most informative labeling.. help pharmaceutical chemists more efficiently maintain high quality standards.
METALLURGICAL Chemists "We depend on reagents with the Actual Lot Analysis, which shows the exact amount of impurities present—therefore saving us time," writes Chief Chemist of a smelting and refining company. " We are particularly concerned with impurities, especially metals, in our reagents. For instance, Hydrobromic Acid must be low in Pb, Cu, As and Fe because it is used in the analysis of these metals Also, Chloroform is used in analysis of Zinc, so it must be low in or free of zinc" And from a metallurgical testing laboratory, "We depend on chemicals providing the Actual Lot Analysis because we need to know the amount of impurities present in our reagents. For instance, we use Hydriodic Acid in a calcium determination by ion exchange method, and it is extremely important that the acid have a very low phosphorus content." Both these chemists know that 'Baker Analyzed' Reagents provide high purity with the Actual Lot Analysis. And as a further proof of purity, more than 370 are labeled with an Actual Lot Assay.
COLLEGES AND UNIVERSITIES
ANALYTICAL Chemists "We use only reagents providing the Actual Lot Analysis to prepare the chemicals used with our instruments," writes the Laboratory Director of a manufacturer of automatic chemical analyzing instruments. "We need to know the amounts of impurities present in our reagents. For example, Potassium Ferricyanide is used for reducing sugars and the ferrous content (as CNt) cannot be greater than 0.05%. The Actual Lot Analysis tells the exact amount. Similarly, Arsenic Pentoxide is used in the test for urea, and 'substances not precipitated by H2S' cannot be greater than 0.1%. We know the exact amount of this impurity when we use reagents with the Actual Lot Analysis." 'Baker Analyzed' Reagents combine extremely high purity plus precise labeling. Each significant impurity is defined to the decimal — by Actual Lot Analysis. Chemists have an instant check on the accuracy of their calculations.
'Baker Analyzed' Reagents are precision training tools. The Actual Lot Analysis, with its exact definition of purity, helps student chemists develop speed, precision and confidence. As professionals, they will find 'Baker Analyzed' Reagents equally valuable as precision working tools. Chemists in every major industry do.
This is your LSR your personal representative from one of the 92 laboratory supply houses that stock J. T. Baker laboratory chemicals. His job is to get you the chemicals, apparatus and glassware you need—when you need them. Call on him! His job is to help you in every way he can. • Laboratory Supply Representative
J. T. Baker Chemical Co. Phllllpsburg. New Jersey
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