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PARTE POSTERIOR DA CAIXA: "CECO" / "MICROTITER®" / "COOKE ENGINEERING CO." / "MEDICAL RESEARCH DIVISION" / "900 SLATERS LANE" / "PHONA 703-548-3889" / "ALEXANDRIA, VIRGINIA" / "ZIP - 22314" / "THE PRECISION MICRODILUTORS CONTAINED IN THE PACKAGE ARE COVERED" / "BY ONE OR MORE OF THE FOLLOWING U. S. PATENTS 3,252,331, 3,349,937." / ".025ml MICRODILUTER® MFG. NO. 220 - 33" / "28 - 3 - 73" (escrito à mão na cor laranja)
PARTE LATERAL DA CAIXA: "28 - 3 - 73" (escrito a mão na cor azul)
PARTE INTERNA DA CAIXA: "Preparation of microdiluter for use" / "1. Flame to incandescence (dull red)." / "2. Cool and pre-wet in approximately 1"/"8” of distilled water. Do not allow wetting above the diluter head slots." / "3. Blot on go-no-go blotter to check delivery as well as drain the liquid." / "4. Diluter is now ready for use." / "Note:" / "1. Diluter should be rinsed in distilled water after each use and liquid should be expelled on blotter before storage." / "2. Never flame diluter without purging in distilled water as this may cause build up and affect pick up and delivery accuracy." / "D.G." (escrito a lápis)