The Universal pH test paper is used to test broad-range solutions from 2.0 to 10.0 in increments of 2.0.
Universal pH Test Paper
Universal pH Test Paper
- Remove one Universal pH test paper from the vial, being careful not to touch the strip anywhere other than where you grasp it.
- Dip the test strip into the solution being tested for 1-2 seconds.
- Remove and compare to the color chart for an approximate pH determination of the aqueous solution (accuracy = +/- 1.0 pH). Do not let strip dry before comparing to the color chart.
Disclaimer: Precision Laboratories products are not approved for use as medical devices. Products and product information is for informational purposes only and not intended for use to diagnose, treat, cure or prevent any medical condition. Consult a medical doctor when needed.
BD212; BG212; JD210; JG210; 210/500; 110; 110-12V-100; 110-25V-100; 110-144V-100; 110-500V-100; 210-500-810; 310-1-25
Product Specs
| SKU 1: | 110-12V-100 (12 vials, 100 strips/vial) |
|---|---|
| SKU 2: | 110-25V-100 (25 vials, 100 strips/vial) |
| SKU 3: | 110-144V-100 (144 vials, 100 strips/vial) |
| SKU 4: | 110-500V-100 (500 vials, 100 strips/vial) |
| SKU 5: | 210-24-8X10 (24 sheets, 8" x 10"[200x250mm]) |
| SKU 6: | 210-500-8X10 (500 sheets, 8" x 10"[200x250mm]) |
| Strip Quantity: | 100 strips |
| Other: | Additional sheet sizes available upon request |
| Vial Dimensions: | .75″ (D) x 2.75″ (H) [19mm (D) x 70mm (H)] |
| Strip Dimensions: | 1.875" (L) x .25" (W) [48mm (L) x 6mm (W)] |
| Box Dimensions: | 10" x 10" x 2.75" [29.8 cm x 19 cm x 7 cm] (144-pack box), 21" x 14.75" x 3" [53.3 cm x 37.5 cm x 7.6 cm] (500-pack box), 3.25" x 2.375" x 3" [8.3 cm x 6 cm x 7.6cm] (12-pack box), 5" x 3.5" x 3" [12.7 cm x 8.9 cm x 7.6 cm] (25-pack box) |
| Weight: | 0.02 lbs [9 g] (single vial) |
| Other: | Stored in a pocket-sized, lightweight vial. |
| Shelf-Life: | 3 Years Minimum |
| Label: | Customizable Label |
Product Documentation
Does temperature affect the pH test strips?
Our pH Color charts were developed using NIST-traceable pH buffers at 25°C. Colorimetric pH test strips do not offer “temperature compensation.” Care should be used when comparing results using test strips to those obtained with a temperature compensated pH meter. It is well established that the “true pH” of a solution will be influenced by temperature. The extent of the effect is specific to the solution being tested. It is good practice to record the temperature of the solution when expressing results of pH testing. In the case of test strips, since they do not compensate for temperature, it is recommended that the sample being tested be brought to room temperature first.
Why is the Universal pH paper staining the color chart and vial?
The Universal pH test paper does undergo some sublimation over time. This is evidenced by the slight discoloration of the color chart and vial. We have found that this sublimation does not normally adversely affect the performance of the test paper.
I'm testing the pH of RO, distilled, and tap water, but the test strips aren't changing color. Are the strips not working or is my water off the charts?
When testing RO, distilled, or tap water, the strips may not behave like you would expect. The colors on the chart were developed for these strips using buffer solutions. The indicators used with the strips require that the waters being tested have some buffering capacity. RO and distilled waters have little or no buffering capacity, and the test strips will not work in these waters. If the tap water has a very low buffer capacity (low hardness, low alkalinity, etc.) the color can take much longer than the recommended 1-2 second immersion and 10-15 development time.
Can I use pH test strips in non-buffered or low-buffered aqueous soltions?
Currently, our pH test strips are designed for testing buffered solutions, and the calibrations (color charts) are made on buffers against a pH-meter measurement. For non- or low-buffered solutions, these strips are not suitable. For this purpose, there are special pH test pads designed for low-ionic and low-buffered waters, such as water in aquariums or pools. Please see our Aquarium and Pool test strips.
