The LaMotte 4488 Hardness Test Tube is a replacement test tube that is graduated to perform drop-count testing in LaMotte water hardness test kits such as the 4482-LT-01 Total Hardness Test Kit, the 4783-02 Combination Water Outfit, the 3590-02 Combination Water Outfit, and the 4824-LT-01 Total, Calcium, and Magnesium Hardness Test Kit (all sold separately). The test tube has an upper line for results in ppm, a middle line for results in gpg, and a lower line if the hardness level exceeds 200 ppm. It includes a cap for sealing. Test tubes are used to hold and mix substances in scientific testing and research applications.
LaMotte manufactures analytical reagents, portable water testing instrumentation, and microbiological testing products. The company, founded in 1919, is headquartered in Chestertown, MD.