Document mBX4qNR1YojY3qjrVOYkjzbp4

COMMERCIAL PRODUCTS HIGHWAY SIGNS ARCHITECTURAL PRODUCTS ADVERTISING IDENTIFICATION SIGNS CALIFORNIA METAL ENAMELING COMPANY 6904 EAST SLAUSON AVENUE LOS ANGELES 2 2, CALIFORNIA RAYMOND 3-6351 January 7, 19^3 Dr. Robert A. Kehoe Director of Kettering Laboratory The University of Cincinnati College of Medicine Eden Avenue Cincinnati 19, Ohio Dear Dr. Kehoe: We are writing to you in regard to a letter received from the Lead Industries Association, Inc., a copy of which is enclosed. We are also enclosing copies of two new reports dated January 3, 1963 of tests performed by Truesdail Laboratories in accord ance with the State of California test method for determining lead solubility of ceramic glazes for the pottery industry. The tests performed by Truesdail were on the alternate method proposed by the State of California and further tests on the boiling acetic acid are being performed presently and should be available within the next few days. It is our understanding that the State of California allow up to four parts per million for these ceramic glazes. Since our porcelain aluminum materials seem to react favorably in this light, i.e., less than four parts per million, it was our feel ing that the porcelain enamels could be used on the interior of. cookware even though they are fired at 1,000 degrees Fahren heit instead of the conventional firing temperature of the pot tery industry. Our lead'content is approximately 30p of the smelted formulation which is, in many cases, less than used by the pottery industry in their cookware. As suggested by Mr. Fowler, possibly the Kettering Laboratory has a more definitive test for determining the maximum allow able lead solubility in a ceramic glaze that could be suggested to us for testing by the Truesdail Laboratories or another rec ognized independent laboratory We would appreciate whatever help you could offer along thi line, as well as your evaluation of the enclosed reports. H. V. Penton president ^^ N9691 0008352 ruts H. iNCf.. <(!. - -* KUt*>e SCH'.VAl! -.Mr 5f S!,,.f . r .. M A W r. J r< . 11 I- * a 1 ' . .* i ' *. '.v : L. s K. t i .......... ... ' 292 MADISON AMENDS NJAV VORK 17.N.V. January k-, lyof Mr, H. V. Pennon, President California Metal Enameling Company 69OI Fast Slauson Avenue Los Angeles 22, Cal.ifornia Re: Your letter cl Deaembe: Dear Mr- Penton: We are of the opinion now, as we have oeen ir. the past., that err:" aluminum Gookvavre sn.ou.Lri not ue coated on the interior surface with lead-bearing enamels. Our recent series of tests run at tir Kettering Laboratory lead us to believe that one of the most important fanlore in the reduction of lead release from glar.es a: ; enamels is tne firing t enperature. Thus far tic K--t,taring test: indicate that tr.ose gianer fired ool.ow id60u:', increase one rir of lead leaching. We would recommend that you contact Dr. Robert A. Keboe, Direct: :- . the Kettering Laboratory, The University of Cincinnati, College Medicine, Eden .Avenue, Cincinnati. 19, Ohio, for his advice and he 17 in suggesting and, possibly, performing suitable tests. The main reason we make the suggestion tnat< your company contact: Dr. Kehoe. is that there is no suitable standard for read release ir. cookware or dinnerware at the present time in this country and v.:. have been working with the Kettering Laboratory - in an investigate' ordesigned to inquire into the development of a suitable standard. None of the standards that we have seen in foreign countries use the term inology or test methods which the Truesdail laboratories used in tne evaluation which they performed for your company. So that it is difficult to relate the results they obtained to the known foreign standards. If you wish, we will obtain copies of these foreign standards and make them available to you. In summary then, we do not at the present time and in the light of our current knowledge recommend the production and use of enamel aluminum cookware which contains interior enamel surfaces. Very truly yours. Don G. Fowler * /< 0008353 N9691.01 1 REPORT r u e s d a il La b o r a t o r ie s , In c . CHEMISTS - BACTERIOLOGISTS - ENGINEERS CLIENT SAMPLE California Metal Enameling Company 6904 East Slauson Avenue Los Angeles 22, California Attn: Mr. Hugh Penton Ceramic Coated Dish P.0. No. 21232 INVESTIGATION Test according to tentative method of test for solubility of lead from glaze surfaces. RESULTS 4101 N. FIGUEROA STREET LOS ANGELES 6 S CAPITOL 5-4148 DATE January 3, 1963 RECEIVED December 26, 1962 LABORATORY NO. 59815 LEAD Parts per million-------------- 2.5 Milligrams per square inch of exposed surface - 0.020 i4 ` ' I'-Vft::.- .c -i . * r. ; JV gg_;v ^i>1r Respectfully submitted, TRUESDAIL LABORATORIES, INC. N9691.02 0G0S354 without prior written authorization from, thaw Laboratories. quality or condition of apparently i report is submitted'and accepted; used, in whole or in part, in any \-e ^ > Tr u e s d a h . Jr tv *v g //* * ' - "A*>'v : * REPORt T w\, 3 l a b o r a t o r ie s , In c . <* V- ' CHEMISTS - BACTERIOLOGISTS - ENGINEERS 4 101 N. FiCUERQA STREET LOS ANGELS * CAPITCl. S-4143 65 CLIENT SAMPLE California Metal Enameling Company 6904 East Slauson Avenue Los Angeles 22, Calitornia Attn: Mr. Hugh Penton Ceramic Coated. Dish DATE January .3, 19u j ..RECEIVED.-. December 26, 1962 LABORATORY NO. 59616 P.0." h'o:'"59Si6 INVESTIGATION Determination of the-amount of lead, cadmium, and antimony in 5% acetic acid solution which'had been in contact with the ceramic coated dish for twenty-four hours at room temperature. RESULTS Lead Cadmium Antimony Parts per million 1.9 None detected Less than 0.05 Milligrams per square inch of exposed surfaces. Less than 0.00 0 5 *4 4 V 1 '* * 4< - ;g.y.. T"5f*.* Vjfi \ C SVv l\. f . /'t-' r -1~. Lv -fi ' * v**?1,1* Respectfully submitted, TRUEPDADl LABORATORIES, INC,- / / fu A / 'Mi.aA.fci, Philip J. j^Uarley, Ph.Dy'-''/ Vice Pres^d6ir '^y' >* HZ 000S35 1S9691-03 Thisreport applies only to the sample, or samples, investigated and is not necessarily indicativt of the quality or condition of apparently identical or similar products. As a mutual protection to clients, the public, and. these Laboratories, this report is submitted . and accepted f for the exclusiveuseof the client to whomit is addressed and upon: the condition that it is not to he used, in whole or in, part, in any /..advertising, or publicity/matter without prior written authorization from these Laboratories. >~ .'A. IMMIJ