(!) Since support from Microsoft will end on January 14th, 2020, Windows 7 will be excluded from the recommended environment from December 15th, 2019 on this site. Vì lý do Microsoft kết thúc hỗ trợ cho Windows 7 vào ngày 14/01/2020, Windows 7 sẽ là hệ điều hành không được khuyến khích sử dụng với trang web này từ ngày 15/12/2019.
[Features]
· A reel type test paper with high resolution accuracy, in which 2 different kinds of indicators are separated in 2 lines.
· Each of the 2 separated color indicators changes color depending on the pH value of the sample solution, so comparison/verification with the included color scale can be done with higher accuracy than the "pH Test Paper Standard."
· Since the center white portion of the test paper does not absorb the sample solution, not only can the 2 colors be compared easily, but the test paper retains physical strength similar to when it is dry.
· Contained in a special structure plastic dispenser that has a color scale and is easy to use, and are individually boxed.
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