Indigo® pH 4.5-10 test strips are ideal for accurate measurement of most foods & drinks as well as urine & saliva. Only $11.50/100 strips.
Typical shelf life of 5 years or more if kept sealed even after opening. The 1 strip for all your health concerns.
pH 4.5-10 triple pad test strips are good for enhanced pH verification. Use them for saliva, urine and science fair demonstrations where resolution is needed for a narrow range than the 1-14 range. This can be very handy when testing different foods and drinks which occur mostly in this range.
The 3 test pads give 0.5 pH resolution and with practice, one can estimate 0.25 pH intervals. See some of the examples below.
The pads on an unused strip are calibrated at ~pH 5.75. Changes can be subtle & appear different under fluorescent, incandescent or sunlight. So, experiments done in the kitchen might appear a bit different when repeated in a school gymnasium.
Excellent product. The strips are packaged well and easy to use. The triple pads make it quite easy to read very accurately. The order was very well packaged and delivered quickly.
Glad you liked them. Others may find this useful: How Do You Use a pH Test Strip?