Rascher & Betzold Colorimetric pH Indicator Kit Circa 1918

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Rascher & Betzold Colorimetric pH Indicator Kit Circa 1918:
$250.00

Laboratory Supplies Chicago, Illinois, USA

pH testing kit with 4 indicator bottles, 4 glass pipets, 4 cards with pH examples, and turofferity compensator. There is also an instruction card. Color indicator cards range in 0.2 pH increments. Back of wooden box has an inventory stamp of (12-11-18) and the actual production age is most likely earlier than 1918. This kit came from a collection of University of Colorado Medical Center items.

Meta Cresol Purple and Cresol Red bottles still have some indicator solution left. The other two are dried up.

Condition (8/10) Fair Overall. Wooden box has many scratches and many rough spots where the stain has come off. The handle and latch are in good condition and function well. Box opens easy and hinges are sturdy. Rubber bulbs on indicator bottles and pipets are still rubbery and are not cracked, and still function well. Color indicator cards are in great condition and have the white board has some black smudges marks. The instruction card had been previously folded, has some rips and tears and is in ok condition. Instructions are still easy to read. Turofferity compensator is in good condition.

Note: Left over indicator solutions maybe toxic in nature and could have decomposed over time and should be left in bottles. Buyer assumes any risk when purchasing this item.