A Chief Chemist writes,
"We depend on, and use,
the ACTUAL LOT ANALYSIS 3727
Sodium Hydroxide 50% SOLUTION
F. W. 39.999
Baker Analyzed' REAGENT ANALYSIS OF LOT NO.
J.T.Baker 0£S& II
23509
Assay (NoOH) Sodium Carbonate (Na,CO,) «. Chloride (CI) Nitrogen Compounds (as N) » _ Phosphate (PO«) Sulfate (SO.) A m m o n i u m Hydroxide Precipitate Heavy Metals (as Ag) Iron (Fe) Potassium (K)
50.0
%
0.05 % 0 . 00 1 % 0.000 2 % 0.000 2 % 0.000 1 % 0.005 % 0.0004 % 0.000 1 % 0.003 %
STORAGE: Keep in tightly closed containers.
J.T.BAKER CHEMICAL CO., PHILLIPSBURG, N.J,
Read how chemists in major industries benefit from the more informative labeling on "Baker Analyzed' Reagents (Statements in response to a survey.)
FOOD Chemists "We depend on, and use, the Actual Lot Analysis," writes the Chief Chemist of a major food company. "In our work we must analyze for trace elements such as Fe, Pb, Zn and As. It's very important to know the amount of metal impurities in our reagents." "The Actual Lot Assay is of great importance to us in making standard solutions for our determinations." Another food chemist states: "The Actual Lot Analysis is very helpful in providing the nitrogen content of sodium hydroxide used for Kjeldahl determinations." And from a third chemist: "We use the Actual Lot Analysis to give an indication of the size of the reagent blank to be expected in trace mineral work." These men depend on, and use, the Actual Lot Analysis because they need precision laboratory tools. They can perform sensitive determinations with greater speed, accuracy and confidence.
PAINT Chemists "We use the Actual Lot Analysis" writes a pigment chemist, "as a check on our determinations of trace elements required to meet our specifications; for example, trace copper and manganese in rubber colors." "In trace analysis work," writes a second paint chemist, "the Actual Lot Analysis of the reagents used is important. For example, when employing sodium peroxide as the oxidant in the determination of trace chlorine, the chloride impurity is important. 'Baker Analyzed' Reagents are controlled to extremely low levels of impurity . . . the actual percentages found for key impurities are given on the label.
CLINICAL Chemists "We depend on reagents with the Actual Lot Analysis," write two prominent clinical chemists. From chemist # 1 : "In bio-analytical procedures it's important for us to know the amount of impurities in our reagents" And from chemist #2: "We run thousands of determinations a year, especially for urea, sugars and carbon dioxide. It's very important, and saves us a lot of time, to know the amount of impurities in our required reagents." Both chemists are referring to the world-famous Actual Lot Analysis that appears on every 'Baker Analyzed' label. 'Baker Analyzed' Reagents offer the highest standards of purity and most informative labeling in the industry.
This is your LSR*... This is the label prepared for lot 2 3 5 0 9 o f BakerAnalyzea" Reagent Sodium Hydroxide, 5 0 % Solution. The Actual Lot Analysis provides the technologist with the exact level of critical impurities such as Nitrogen compounds and Carbonate content. Every 'Baker Analyzed' Reagent is labeled with an Actual Lot Analysis that defines purity to the decimal, not just maximum limits. More than 3 0 0 are labeled with an Actual Lot Assay, not merely a range assay.
an expert in laboratory supply who knows that all technologists benefit from the exact definition of purity provided by the 'Baker Analyzed* label. Your LSR represents one of the laboratory supply houses that stock J. T. Baker laboratory chemicals. His job is to help you get the chemicals, apparatus and glassware you need — when you need them. Call him — he wants to help you every way he can. • Laboratory Supply Representative
J.T.Bakl
J. T. Baker Chemical Co. Phillipsburg. New Jersey
