Water Testing Strips like the AquaChek Test Strips can be used to test for individual chemicals or you can buy something like AquaChek Select 7 Way Test Strips or Yellow 4 Way Chlorine to make multiple tests at the same time.
Most second-language speakers reside in Francophone Africa, in particular Gabon, Algeria, Mauritius, Senegal and Ivory Coast. In 2015, French was estimated to have 77 to 110 million native speakers, and 190 million secondary speakers. Approximately 274 million people are able to speak the language. According to a demographic projection led by the UniversitÃ© Laval and the RÃ©seau DÃ©mographie de l'Agence universitaire de la francophonie, total French speakers will number approximately 500 million people in 2025 and 650 million people by 2050.
French â 129 Million Speakers. Any French person will be quick to tell you that their language is one of the most romantic languages in the world but is also spoken in many other countries such as Belgium, Canada, Rwanda, Cameroon, and Haiti.. Not only is Arabic one of the most popular languages but it is also one of the oldest. It is spoken throughout the Middle East and found in other countries such as Saudi Arabia, Kuwait, Iraq, Syria, Jordan, Lebanon, and Egypt.