The Barnant 223400 color test kit reads apparent color created by dissolved substances to indicate industrial, agricultural, or natural pollution. The dual-range kit includes color disc, comparator box and tubes, and instructions in a plastic carrying case.
Thermo Fisher Scientific manufactures analytical instruments, laboratory equipment, consumables, and software under the Thermo Scientific, Fisher Scientific, Barnstead, and Nalgene brands, among others. The company is headquartered in Waltham, MA.