Afghanistan, Africa, American Samoa, Anguilla, Armenia, Azerbaijan Republic, Bahamas, Bangladesh, Barbados, Belarus, Bermuda, Bhutan, Bolivia, Botswana, Brunei Darussalam, Cambodia, Cayman Islands, Central African Republic, Central America and Caribbean, Chad, Comoros, Cook Islands, Côte d'Ivoire (Ivory Coast), Democratic People's Republic of Korea, Djibouti, Ecuador, El Salvador, Europe, Falkland Islands (Islas Malvinas), Fiji, French Polynesia, Gambia, Georgia, Greenland, Guam, Guernsey, Guinea-Bissau, Guyana, Honduras, India, Jamaica, Japan, Jersey, Kazakhstan, Kiribati, Kyrgyzstan, Laos, Libya, Macau, Macedonia, Madagascar, Malawi, Malaysia, Maldives, Marshall Islands, Mayotte, Mexico, Micronesia, Middle East, Moldova, Mongolia, Morocco, Nauru, Nepal, New Caledonia, Nicaragua, Niue, Pakistan, Palau, Papua New Guinea, Paraguay, Philippines, Republic of Cuba, Reunion, Russian Federation, Rwanda, Saint Pierre and Miquelon, San Marino, Senegal, Sierra Leone, Singapore, Solomon Islands, Somalia, South America, South Korea, Sri Lanka, Sudan, Suriname, Svalbard and Jan Mayen, Swaziland, Syria, Taiwan, Tajikistan, Thailand, Tonga, Trinidad and Tobago, Tunisia, Turkmenistan, Tuvalu, Uzbekistan, Vanuatu, Venezuela, Virgin Islands (U.S. Ferrous sulphate solution is prepared by dissolving 0.5 g FeSO4.7H2O in 10 ml of distilled water.

Ferrous sulfate liquid