Two vintage comparators

What is for sale: Two vintage comparators

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These are comparators for the collector as I doubt that either would be that functional. There is a Block ComparatorModel N.E. Made by LaMotte Chemical Products Co. Baltimore Maryland. The eyedropper bottle has the Label Bromcresol Purple pH 5.2-6.8 (Empty) There are 10 test tube like containers, Unopened with original contents, They are; Distilled Water, and the other 9 all contain Bromcresol with diffrerent pH factors, they are pH 6.2 , pH 6.0 , pH 5.2 , pH 6.4 , pH 6.8 , pH 5.6 , pH 6.6 , pH 5.4 , pH 5.8 There is also 4 empty tubes.The other Comparator is ; Kocour Nickel Comparator Made by State Mfg. Co. Chicago, L Set No. 1571 RIt contains 8 Unopened and with original contents sealed tubes with the labels; 1/4 Oz/Gal Metallic Nickel 1.87G/L, 3 Oz/Gal Metallic Nickel 22.5 G/L, "Neutralizer" , ) Oz/Gal Metallic Nickel 0 G/L, 6 Oz/Gal Metallic Nickel 45. G/L , 2 Oz/Gal Metallis Nickel 15.G/L, 5 Oz/Gal Metaallic Nickel 37.5 HG/L , 1 Oz/Gal Metallic Nickel 7.5 G/L There is also two pages of Directions for Determining the Metallic Nickel Content of Nickel Plating and Electroplating solutions. Both come in very unique wooden boxes in very good shape.