CLEANING SOLUTIONS FOR GLASSWARE

Acid Dichromate Solution

Potassium dichromate ------------------------------------------------------------        36.0 gm

Distilled water --------------------------------------------------------------------        1800.0 ml

Sulfuric acid ----------------------------------------------------------------------        200.0 ml

       Add the potassium dichromate to the distilled water and then add

       the sulfuric acid.

Acid Alcohol Solution

Alcohol, absolute ----------------------------------------------------------------        500.0 ml

Distilled water -------------------------------------------------------------------        500.0 ml

Hydrochloric acid, concentrated -------------------------------------------------        10.0 ml

Nitric acid, concentrated --------------------------------------------------------                10.0 ml

       Add the distilled water to the alcohol and then add the acids.

To remove the following stains from glassware, use the solutions indicated:

1.        Alcian blue - acid alcohol or Ausome (Ausome Products, Inc., 6370 Altura Blvd., Buena Park, CA 90620, 1-800-482-2875).

2.        Auramine-rhodamine - acid alcohol.

3.        Basic fuchsin - acid dichromate.

4.        Carmine - acid alcohol.

5.        Crystal violet - acid dichromate.

6.        Hematoxylin - acid dichromate.

7.        Methylene blue - acid dichromate.

8.        Nuclear fast red - acid alcohol.

9.        Silver deposits - acid dichromate.

10.        Sudan stains (Oil red O, Sudan black B) - acetone.

11.        Thioflavin T - acid alcohol.

12.        For other stains - acid dichromate.