Acid/Alkaline Strips 4.5-10 100/Pk

The pH 4.5-10 test strip is ideal for accurate measurement of most foods & drinks as well as urine, saliva & water-the 1 strip for all your health concerns.

SKU: 33811-4510
pH paper, 4.5-10 (0.5 steps), 3 pad, ~100/pack

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The pH 4.5-10 test strips are an extended version of the 5.5-8 strips and come with triple pads for enhanced pH verification. They are also useful for science fair demonstrations where better precision rather than the full 1-14 range are needed. This can be very handy when testing different foods and drinks which occur mostly in this range.

While they cover a narrower range than the pH 1-14 strips the 3 test pads has the better 0.5 pH resolution; with practice, one can estimate 0.25 pH intervals. Typically only two of the three pads change colour at any given pH level which you match with the closest 3 on the color chart.

The pads on an unused strip are calibrated at ~pH5.75 with the yellow pad at the end of the strip matching the yellow under "pad 1" (bottom of the strip) on the color chart. 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.

Note: These strips come in a special dispenser pack with 100 strips. The number of strips per pack is approximate.

In addition to this narrow range acid-base test strip, there are also wide range acid-base pH test strips.