... value 2.0-9.0(2.0, 2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0,6.5,7.0,7.5 ... ,8.0,8.5,9.0 ... .25, 6.5, 6.75, 7.0, 7.25, 7.5, 8.0, 8.5, 9.0 used in Home Healthcare ,Test yourself saliva ... good implacement of Bayer 10SG.2. visually read 1 to 9 parameters.a. Siemens Diagnostics compatiable strips (Clinitek 50,100,200 ... ,wealth,credit and culture! pH test strip 4.5-5.0