Right now, if you want to test water in the field, you need a trained technician, expensive equipment like this, and you have to wait about a day for chemical reactions to take place and provide results.
Saat ini, jika Anda ingin menguji air di lapangan, Anda memerlukan teknisi terlatih, peralatan mahal seperti ini, dan Anda harus menunggu sekitar 1 hari untuk terjadinya reaksi kimia dan mengambil hasilnya.