Merck chlorine -test (free chlorine ) method: colorimetry, DPD, with rotary disc comparator, 1000 tests, 0.25 - 0.50 - 0.75 - 1 - 2 - 4 - 8 - 10 - 15

Please take note of the Safety Data Sheet http://www.merckmillipore.com/INTERSHOP/web/WFS/Merck-INTL-Site/en_US/-/USD/ShowDocument-File?ProductSKU=MDA_CHEM-114976&DocumentType=MSD&Language=EN&Country=GB